d3noob · August 30, 2022 17:09
diff --git a/.block b/.block
 license: mit
diff --git a/readme.md b/readme.md
diff --git a/bootstrap.min.css b/bootstrap.min.css
 /*!
 * Bootstrap v2.3.2
 *
 * Copyright 2012 Twitter, Inc
 * Licensed under the Apache License v2.0
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Designed and built with all the love in the world @twitter by @mdo and @fat.
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diff --git a/crossfilter.js b/crossfilter.js
 (function(exports){
 crossfilter.version = "1.1.1";
 function crossfilter_identity(d) {
  return d;
 }
 crossfilter.permute = permute;

 function permute(array, index) {
  for (var i = 0, n = index.length, copy = new Array(n); i < n; ++i) {
    copy[i] = array[index[i]];
  }
  return copy;
 }
 var bisect = crossfilter.bisect = bisect_by(crossfilter_identity);

 bisect.by = bisect_by;

 function bisect_by(f) {

  // Locate the insertion point for x in a to maintain sorted order. The
  // arguments lo and hi may be used to specify a subset of the array which
  // should be considered; by default the entire array is used. If x is already
  // present in a, the insertion point will be before (to the left of) any
  // existing entries. The return value is suitable for use as the first
  // argument to `array.splice` assuming that a is already sorted.
  // Incomparable values such as NaN and undefined are assumed to be at the end
  // of the array.
  //
  // The returned insertion point i partitions the array a into two halves so
  // that all v < x for v in a[lo:i] for the left side and all v >= x for v in
  // a[i:hi] for the right side.
  function bisectLeft(a, x, lo, hi) {
    while (lo < hi) {
      var mid = lo + hi >>> 1,
          y = f(a[mid]);
      if (x <= y || !(y <= y)) hi = mid;
      else lo = mid + 1;
    }
    return lo;
  }

  // Similar to bisectLeft, but returns an insertion point which comes after (to
  // the right of) any existing entries of x in a.
  //
  // The returned insertion point i partitions the array into two halves so that
  // all v <= x for v in a[lo:i] for the left side and all v > x for v in
  // a[i:hi] for the right side.
  function bisectRight(a, x, lo, hi) {
    while (lo < hi) {
      var mid = lo + hi >>> 1,
          y = f(a[mid]);
      if (x < y || !(y <= y)) hi = mid;
      else lo = mid + 1;
    }
    return lo;
  }

  bisectRight.right = bisectRight;
  bisectRight.left = bisectLeft;
  return bisectRight;
 }
 var heap = crossfilter.heap = heap_by(crossfilter_identity);

 heap.by = heap_by;

 function heap_by(f) {

  // Builds a binary heap within the specified array a[lo:hi]. The heap has the
  // property such that the parent a[lo+i] is always less than or equal to its
  // two children: a[lo+2*i+1] and a[lo+2*i+2].
  function heap(a, lo, hi) {
    var n = hi - lo,
        i = (n >>> 1) + 1;
    while (--i > 0) sift(a, i, n, lo);
    return a;
  }

  // Sorts the specified array a[lo:hi] in descending order, assuming it is
  // already a heap.
  function sort(a, lo, hi) {
    var n = hi - lo,
        t;
    while (--n > 0) t = a[lo], a[lo] = a[lo + n], a[lo + n] = t, sift(a, 1, n, lo);
    return a;
  }

  // Sifts the element a[lo+i-1] down the heap, where the heap is the contiguous
  // slice of array a[lo:lo+n]. This method can also be used to update the heap
  // incrementally, without incurring the full cost of reconstructing the heap.
  function sift(a, i, n, lo) {
    var d = a[--lo + i],
        x = f(d),
        child;
    while ((child = i << 1) <= n) {
      if (child < n && f(a[lo + child]) > f(a[lo + child + 1])) child++;
      if (x <= f(a[lo + child])) break;
      a[lo + i] = a[lo + child];
      i = child;
    }
    a[lo + i] = d;
  }

  heap.sort = sort;
  return heap;
 }
 var heapselect = crossfilter.heapselect = heapselect_by(crossfilter_identity);

 heapselect.by = heapselect_by;

 function heapselect_by(f) {
  var heap = heap_by(f);

  // Returns a new array containing the top k elements in the array a[lo:hi].
  // The returned array is not sorted, but maintains the heap property. If k is
  // greater than hi - lo, then fewer than k elements will be returned. The
  // order of elements in a is unchanged by this operation.
  function heapselect(a, lo, hi, k) {
    var queue = new Array(k = Math.min(hi - lo, k)),
        min,
        i,
        x,
        d;

    for (i = 0; i < k; ++i) queue[i] = a[lo++];
    heap(queue, 0, k);

    if (lo < hi) {
      min = f(queue[0]);
      do {
        if (x = f(d = a[lo]) > min) {
          queue[0] = d;
          min = f(heap(queue, 0, k)[0]);
        }
      } while (++lo < hi);
    }

    return queue;
  }

  return heapselect;
 }
 var insertionsort = crossfilter.insertionsort = insertionsort_by(crossfilter_identity);

 insertionsort.by = insertionsort_by;

 function insertionsort_by(f) {

  function insertionsort(a, lo, hi) {
    for (var i = lo + 1; i < hi; ++i) {
      for (var j = i, t = a[i], x = f(t), y; j > lo && ((y = f(a[j - 1])) > x || !(y <= y)); --j) {
        a[j] = a[j - 1];
      }
      a[j] = t;
    }
    return a;
  }

  return insertionsort;
 }
 // Algorithm designed by Vladimir Yaroslavskiy.
 // Implementation based on the Dart project; see lib/dart/LICENSE for details.

 var quicksort = crossfilter.quicksort = quicksort_by(crossfilter_identity);

 quicksort.by = quicksort_by;

 function quicksort_by(f) {
  var insertionsort = insertionsort_by(f);

  function sort(a, lo, hi) {
    return (hi - lo < quicksort_sizeThreshold
        ? insertionsort
        : quicksort)(a, lo, hi);
  }

  function quicksort(a, lo, hi) {
    // First move NaN and undefined to the end.
    var x, y;
    while (lo < hi && !((x = f(a[hi - 1])) <= x)) hi--;
    for (var i = hi; --i >= lo; ) {
      x = f(y = a[i]);
      if (!(x <= x)) {
        a[i] = a[--hi];
        a[hi] = y;
      }
    }

    // Compute the two pivots by looking at 5 elements.
    var sixth = (hi - lo) / 6 | 0,
        i1 = lo + sixth,
        i5 = hi - 1 - sixth,
        i3 = lo + hi - 1 >> 1,  // The midpoint.
        i2 = i3 - sixth,
        i4 = i3 + sixth;

    var e1 = a[i1], x1 = f(e1),
        e2 = a[i2], x2 = f(e2),
        e3 = a[i3], x3 = f(e3),
        e4 = a[i4], x4 = f(e4),
        e5 = a[i5], x5 = f(e5);

    var t;

    // Sort the selected 5 elements using a sorting network.
    if (x1 > x2) t = e1, e1 = e2, e2 = t, t = x1, x1 = x2, x2 = t;
    if (x4 > x5) t = e4, e4 = e5, e5 = t, t = x4, x4 = x5, x5 = t;
    if (x1 > x3) t = e1, e1 = e3, e3 = t, t = x1, x1 = x3, x3 = t;
    if (x2 > x3) t = e2, e2 = e3, e3 = t, t = x2, x2 = x3, x3 = t;
    if (x1 > x4) t = e1, e1 = e4, e4 = t, t = x1, x1 = x4, x4 = t;
    if (x3 > x4) t = e3, e3 = e4, e4 = t, t = x3, x3 = x4, x4 = t;
    if (x2 > x5) t = e2, e2 = e5, e5 = t, t = x2, x2 = x5, x5 = t;
    if (x2 > x3) t = e2, e2 = e3, e3 = t, t = x2, x2 = x3, x3 = t;
    if (x4 > x5) t = e4, e4 = e5, e5 = t, t = x4, x4 = x5, x5 = t;

    var pivot1 = e2, pivotValue1 = x2,
        pivot2 = e4, pivotValue2 = x4;

    // e2 and e4 have been saved in the pivot variables. They will be written
    // back, once the partitioning is finished.
    a[i1] = e1;
    a[i2] = a[lo];
    a[i3] = e3;
    a[i4] = a[hi - 1];
    a[i5] = e5;

    var less = lo + 1,   // First element in the middle partition.
        great = hi - 2;  // Last element in the middle partition.

    // Note that for value comparison, <, <=, >= and > coerce to a primitive via
    // Object.prototype.valueOf; == and === do not, so in order to be consistent
    // with natural order (such as for Date objects), we must do two compares.
    var pivotsEqual = pivotValue1 <= pivotValue2 && pivotValue1 >= pivotValue2;
    if (pivotsEqual) {

      // Degenerated case where the partitioning becomes a dutch national flag
      // problem.
      //
      // [ |  < pivot  | == pivot | unpartitioned | > pivot  | ]
      //  ^             ^          ^             ^            ^
      // left         less         k           great         right
      //
      // a[left] and a[right] are undefined and are filled after the
      // partitioning.
      //
      // Invariants:
      //   1) for x in ]left, less[ : x < pivot.
      //   2) for x in [less, k[ : x == pivot.
      //   3) for x in ]great, right[ : x > pivot.
      for (var k = less; k <= great; ++k) {
        var ek = a[k], xk = f(ek);
        if (xk < pivotValue1) {
          if (k !== less) {
            a[k] = a[less];
            a[less] = ek;
          }
          ++less;
        } else if (xk > pivotValue1) {

          // Find the first element <= pivot in the range [k - 1, great] and
          // put [:ek:] there. We know that such an element must exist:
          // When k == less, then el3 (which is equal to pivot) lies in the
          // interval. Otherwise a[k - 1] == pivot and the search stops at k-1.
          // Note that in the latter case invariant 2 will be violated for a
          // short amount of time. The invariant will be restored when the
          // pivots are put into their final positions.
          while (true) {
            var greatValue = f(a[great]);
            if (greatValue > pivotValue1) {
              great--;
              // This is the only location in the while-loop where a new
              // iteration is started.
              continue;
            } else if (greatValue < pivotValue1) {
              // Triple exchange.
              a[k] = a[less];
              a[less++] = a[great];
              a[great--] = ek;
              break;
            } else {
              a[k] = a[great];
              a[great--] = ek;
              // Note: if great < k then we will exit the outer loop and fix
              // invariant 2 (which we just violated).
              break;
            }
          }
        }
      }
    } else {

      // We partition the list into three parts:
      //  1. < pivot1
      //  2. >= pivot1 && <= pivot2
      //  3. > pivot2
      //
      // During the loop we have:
      // [ | < pivot1 | >= pivot1 && <= pivot2 | unpartitioned  | > pivot2  | ]
      //  ^            ^                        ^              ^             ^
      // left         less                     k              great        right
      //
      // a[left] and a[right] are undefined and are filled after the
      // partitioning.
      //
      // Invariants:
      //   1. for x in ]left, less[ : x < pivot1
      //   2. for x in [less, k[ : pivot1 <= x && x <= pivot2
      //   3. for x in ]great, right[ : x > pivot2
      for (var k = less; k <= great; k++) {
        var ek = a[k], xk = f(ek);
        if (xk < pivotValue1) {
          if (k !== less) {
            a[k] = a[less];
            a[less] = ek;
          }
          ++less;
        } else {
          if (xk > pivotValue2) {
            while (true) {
              var greatValue = f(a[great]);
              if (greatValue > pivotValue2) {
                great--;
                if (great < k) break;
                // This is the only location inside the loop where a new
                // iteration is started.
                continue;
              } else {
                // a[great] <= pivot2.
                if (greatValue < pivotValue1) {
                  // Triple exchange.
                  a[k] = a[less];
                  a[less++] = a[great];
                  a[great--] = ek;
                } else {
                  // a[great] >= pivot1.
                  a[k] = a[great];
                  a[great--] = ek;
                }
                break;
              }
            }
          }
        }
      }
    }

    // Move pivots into their final positions.
    // We shrunk the list from both sides (a[left] and a[right] have
    // meaningless values in them) and now we move elements from the first
    // and third partition into these locations so that we can store the
    // pivots.
    a[lo] = a[less - 1];
    a[less - 1] = pivot1;
    a[hi - 1] = a[great + 1];
    a[great + 1] = pivot2;

    // The list is now partitioned into three partitions:
    // [ < pivot1   | >= pivot1 && <= pivot2   |  > pivot2   ]
    //  ^            ^                        ^             ^
    // left         less                     great        right

    // Recursive descent. (Don't include the pivot values.)
    sort(a, lo, less - 1);
    sort(a, great + 2, hi);

    if (pivotsEqual) {
      // All elements in the second partition are equal to the pivot. No
      // need to sort them.
      return a;
    }

    // In theory it should be enough to call _doSort recursively on the second
    // partition.
    // The Android source however removes the pivot elements from the recursive
    // call if the second partition is too large (more than 2/3 of the list).
    if (less < i1 && great > i5) {
      var lessValue, greatValue;
      while ((lessValue = f(a[less])) <= pivotValue1 && lessValue >= pivotValue1) ++less;
      while ((greatValue = f(a[great])) <= pivotValue2 && greatValue >= pivotValue2) --great;

      // Copy paste of the previous 3-way partitioning with adaptions.
      //
      // We partition the list into three parts:
      //  1. == pivot1
      //  2. > pivot1 && < pivot2
      //  3. == pivot2
      //
      // During the loop we have:
      // [ == pivot1 | > pivot1 && < pivot2 | unpartitioned  | == pivot2 ]
      //              ^                      ^              ^
      //            less                     k              great
      //
      // Invariants:
      //   1. for x in [ *, less[ : x == pivot1
      //   2. for x in [less, k[ : pivot1 < x && x < pivot2
      //   3. for x in ]great, * ] : x == pivot2
      for (var k = less; k <= great; k++) {
        var ek = a[k], xk = f(ek);
        if (xk <= pivotValue1 && xk >= pivotValue1) {
          if (k !== less) {
            a[k] = a[less];
            a[less] = ek;
          }
          less++;
        } else {
          if (xk <= pivotValue2 && xk >= pivotValue2) {
            while (true) {
              var greatValue = f(a[great]);
              if (greatValue <= pivotValue2 && greatValue >= pivotValue2) {
                great--;
                if (great < k) break;
                // This is the only location inside the loop where a new
                // iteration is started.
                continue;
              } else {
                // a[great] < pivot2.
                if (greatValue < pivotValue1) {
                  // Triple exchange.
                  a[k] = a[less];
                  a[less++] = a[great];
                  a[great--] = ek;
                } else {
                  // a[great] == pivot1.
                  a[k] = a[great];
                  a[great--] = ek;
                }
                break;
              }
            }
          }
        }
      }
    }

    // The second partition has now been cleared of pivot elements and looks
    // as follows:
    // [  *  |  > pivot1 && < pivot2  | * ]
    //        ^                      ^
    //       less                  great
    // Sort the second partition using recursive descent.

    // The second partition looks as follows:
    // [  *  |  >= pivot1 && <= pivot2  | * ]
    //        ^                        ^
    //       less                    great
    // Simply sort it by recursive descent.

    return sort(a, less, great + 1);
  }

  return sort;
 }

 var quicksort_sizeThreshold = 32;
 var crossfilter_array8 = crossfilter_arrayUntyped,
    crossfilter_array16 = crossfilter_arrayUntyped,
    crossfilter_array32 = crossfilter_arrayUntyped,
    crossfilter_arrayLengthen = crossfilter_identity,
    crossfilter_arrayWiden = crossfilter_identity;

 if (typeof Uint8Array !== "undefined") {
  crossfilter_array8 = function(n) { return new Uint8Array(n); };
  crossfilter_array16 = function(n) { return new Uint16Array(n); };
  crossfilter_array32 = function(n) { return new Uint32Array(n); };

  crossfilter_arrayLengthen = function(array, length) {
    var copy = new array.constructor(length);
    copy.set(array);
    return copy;
  };

  crossfilter_arrayWiden = function(array, width) {
    var copy;
    switch (width) {
      case 16: copy = crossfilter_array16(array.length); break;
      case 32: copy = crossfilter_array32(array.length); break;
      default: throw new Error("invalid array width!");
    }
    copy.set(array);
    return copy;
  };
 }

 function crossfilter_arrayUntyped(n) {
  return new Array(n);
 }
 function crossfilter_filterExact(bisect, value) {
  return function(values) {
    var n = values.length;
    return [bisect.left(values, value, 0, n), bisect.right(values, value, 0, n)];
  };
 }

 function crossfilter_filterRange(bisect, range) {
  var min = range[0],
      max = range[1];
  return function(values) {
    var n = values.length;
    return [bisect.left(values, min, 0, n), bisect.left(values, max, 0, n)];
  };
 }

 function crossfilter_filterAll(values) {
  return [0, values.length];
 }
 function crossfilter_null() {
  return null;
 }
 function crossfilter_zero() {
  return 0;
 }
 function crossfilter_reduceIncrement(p) {
  return p + 1;
 }

 function crossfilter_reduceDecrement(p) {
  return p - 1;
 }

 function crossfilter_reduceAdd(f) {
  return function(p, v) {
    return p + +f(v);
  };
 }

 function crossfilter_reduceSubtract(f) {
  return function(p, v) {
    return p - f(v);
  };
 }
 exports.crossfilter = crossfilter;

 function crossfilter() {
  var crossfilter = {
    add: add,
    dimension: dimension,
    groupAll: groupAll,
    size: size
  };

  var data = [], // the records
      n = 0, // the number of records; data.length
      m = 0, // number of dimensions in use
      M = 8, // number of dimensions that can fit in `filters`
      filters = crossfilter_array8(0), // M bits per record; 1 is filtered out
      filterListeners = [], // when the filters change
      dataListeners = []; // when data is added

  // Adds the specified new records to this crossfilter.
  function add(newData) {
    var n0 = n,
        n1 = newData.length;

    // If there's actually new data to add…
    // Merge the new data into the existing data.
    // Lengthen the filter bitset to handle the new records.
    // Notify listeners (dimensions and groups) that new data is available.
    if (n1) {
      data = data.concat(newData);
      filters = crossfilter_arrayLengthen(filters, n += n1);
      dataListeners.forEach(function(l) { l(newData, n0, n1); });
    }

    return crossfilter;
  }

  // Adds a new dimension with the specified value accessor function.
  function dimension(value) {
    var dimension = {
      filter: filter,
      filterExact: filterExact,
      filterRange: filterRange,
      filterAll: filterAll,
      top: top,
      bottom: bottom,
      group: group,
      groupAll: groupAll
    };

    var one = 1 << m++, // bit mask, e.g., 00001000
        zero = ~one, // inverted one, e.g., 11110111
        values, // sorted, cached array
        index, // value rank ↦ object id
        newValues, // temporary array storing newly-added values
        newIndex, // temporary array storing newly-added index
        sort = quicksort_by(function(i) { return newValues[i]; }),
        refilter = crossfilter_filterAll, // for recomputing filter
        indexListeners = [], // when data is added
        lo0 = 0,
        hi0 = 0;

    // Updating a dimension is a two-stage process. First, we must update the
    // associated filters for the newly-added records. Once all dimensions have
    // updated their filters, the groups are notified to update.
    dataListeners.unshift(preAdd);
    dataListeners.push(postAdd);

    // Incorporate any existing data into this dimension, and make sure that the
    // filter bitset is wide enough to handle the new dimension.
    if (m > M) filters = crossfilter_arrayWiden(filters, M <<= 1);
    preAdd(data, 0, n);
    postAdd(data, 0, n);

    // Incorporates the specified new records into this dimension.
    // This function is responsible for updating filters, values, and index.
    function preAdd(newData, n0, n1) {

      // Permute new values into natural order using a sorted index.
      newValues = newData.map(value);
      newIndex = sort(crossfilter_range(n1), 0, n1);
      newValues = permute(newValues, newIndex);

      // Bisect newValues to determine which new records are selected.
      var bounds = refilter(newValues), lo1 = bounds[0], hi1 = bounds[1], i;
      for (i = 0; i < lo1; ++i) filters[newIndex[i] + n0] |= one;
      for (i = hi1; i < n1; ++i) filters[newIndex[i] + n0] |= one;

      // If this dimension previously had no data, then we don't need to do the
      // more expensive merge operation; use the new values and index as-is.
      if (!n0) {
        values = newValues;
        index = newIndex;
        lo0 = lo1;
        hi0 = hi1;
        return;
      }

      var oldValues = values,
          oldIndex = index,
          i0 = 0,
          i1 = 0;

      // Otherwise, create new arrays into which to merge new and old.
      values = new Array(n);
      index = crossfilter_index(n, n);

      // Merge the old and new sorted values, and old and new index.
      for (i = 0; i0 < n0 && i1 < n1; ++i) {
        if (oldValues[i0] < newValues[i1]) {
          values[i] = oldValues[i0];
          index[i] = oldIndex[i0++];
        } else {
          values[i] = newValues[i1];
          index[i] = newIndex[i1++] + n0;
        }
      }

      // Add any remaining old values.
      for (; i0 < n0; ++i0, ++i) {
        values[i] = oldValues[i0];
        index[i] = oldIndex[i0];
      }

      // Add any remaining new values.
      for (; i1 < n1; ++i1, ++i) {
        values[i] = newValues[i1];
        index[i] = newIndex[i1] + n0;
      }

      // Bisect again to recompute lo0 and hi0.
      bounds = refilter(values), lo0 = bounds[0], hi0 = bounds[1];
    }

    // When all filters have updated, notify index listeners of the new values.
    function postAdd(newData, n0, n1) {
      indexListeners.forEach(function(l) { l(newValues, newIndex, n0, n1); });
      newValues = newIndex = null;
    }

    // Updates the selected values based on the specified bounds [lo, hi].
    // This implementation is used by all the public filter methods.
    function filterIndex(bounds) {
      var i,
          j,
          k,
          lo1 = bounds[0],
          hi1 = bounds[1],
          added = [],
          removed = [];

      // Fast incremental update based on previous lo index.
      if (lo1 < lo0) {
        for (i = lo1, j = Math.min(lo0, hi1); i < j; ++i) {
          filters[k = index[i]] ^= one;
          added.push(k);
        }
      } else if (lo1 > lo0) {
        for (i = lo0, j = Math.min(lo1, hi0); i < j; ++i) {
          filters[k = index[i]] ^= one;
          removed.push(k);
        }
      }

      // Fast incremental update based on previous hi index.
      if (hi1 > hi0) {
        for (i = Math.max(lo1, hi0), j = hi1; i < j; ++i) {
          filters[k = index[i]] ^= one;
          added.push(k);
        }
      } else if (hi1 < hi0) {
        for (i = Math.max(lo0, hi1), j = hi0; i < j; ++i) {
          filters[k = index[i]] ^= one;
          removed.push(k);
        }
      }

      lo0 = lo1;
      hi0 = hi1;
      filterListeners.forEach(function(l) { l(one, added, removed); });
      return dimension;
    }

    // Filters this dimension using the specified range, value, or null.
    // If the range is null, this is equivalent to filterAll.
    // If the range is an array, this is equivalent to filterRange.
    // Otherwise, this is equivalent to filterExact.
    function filter(range) {
      return range == null
          ? filterAll() : Array.isArray(range)
          ? filterRange(range)
          : filterExact(range);
    }

    // Filters this dimension to select the exact value.
    function filterExact(value) {
      return filterIndex((refilter = crossfilter_filterExact(bisect, value))(values));
    }

    // Filters this dimension to select the specified range [lo, hi].
    // The lower bound is inclusive, and the upper bound is exclusive.
    function filterRange(range) {
      return filterIndex((refilter = crossfilter_filterRange(bisect, range))(values));
    }

    // Clears any filters on this dimension.
    function filterAll() {
      return filterIndex((refilter = crossfilter_filterAll)(values));
    }

    // Returns the top K selected records based on this dimension's order.
    // Note: observes this dimension's filter, unlike group and groupAll.
    function top(k) {
      var array = [],
          i = hi0,
          j;

      while (--i >= lo0 && k > 0) {
        if (!filters[j = index[i]]) {
          array.push(data[j]);
          --k;
        }
      }

      return array;
    }

    // Returns the bottom K selected records based on this dimension's order.
    // Note: observes this dimension's filter, unlike group and groupAll.
    function bottom(k) {
      var array = [],
          i = lo0,
          j;

      while (i < hi0 && k > 0) {
        if (!filters[j = index[i]]) {
          array.push(data[j]);
          --k;
        }
        i++;
      }

      return array;
    }

    // Adds a new group to this dimension, using the specified key function.
    function group(key) {
      var group = {
        top: top,
        all: all,
        reduce: reduce,
        reduceCount: reduceCount,
        reduceSum: reduceSum,
        order: order,
        orderNatural: orderNatural,
        size: size
      };

      var groups, // array of {key, value}
          groupIndex, // object id ↦ group id
          groupWidth = 8,
          groupCapacity = crossfilter_capacity(groupWidth),
          k = 0, // cardinality
          select,
          heap,
          reduceAdd,
          reduceRemove,
          reduceInitial,
          update = crossfilter_null,
          reset = crossfilter_null,
          resetNeeded = true;

      if (arguments.length < 1) key = crossfilter_identity;

      // The group listens to the crossfilter for when any dimension changes, so
      // that it can update the associated reduce values. It must also listen to
      // the parent dimension for when data is added, and compute new keys.
      filterListeners.push(update);
      indexListeners.push(add);

      // Incorporate any existing data into the grouping.
      add(values, index, 0, n);

      // Incorporates the specified new values into this group.
      // This function is responsible for updating groups and groupIndex.
      function add(newValues, newIndex, n0, n1) {
        var oldGroups = groups,
            reIndex = crossfilter_index(k, groupCapacity),
            add = reduceAdd,
            initial = reduceInitial,
            k0 = k, // old cardinality
            i0 = 0, // index of old group
            i1 = 0, // index of new record
            j, // object id
            g0, // old group
            x0, // old key
            x1, // new key
            g, // group to add
            x; // key of group to add

        // If a reset is needed, we don't need to update the reduce values.
        if (resetNeeded) add = initial = crossfilter_null;

        // Reset the new groups (k is a lower bound).
        // Also, make sure that groupIndex exists and is long enough.
        groups = new Array(k), k = 0;
        groupIndex = k0 > 1 ? crossfilter_arrayLengthen(groupIndex, n) : crossfilter_index(n, groupCapacity);

        // Get the first old key (x0 of g0), if it exists.
        if (k0) x0 = (g0 = oldGroups[0]).key;

        // Find the first new key (x1).
        x1 = key(newValues[i1]);

        // While new keys remain…
        while (i1 < n1) {

          // Determine the lesser of the two current keys; new and old.
          // If there are no old keys remaining, then always add the new key.
          if (g0 && x0 <= x1) {
            g = g0, x = x0;

            // Record the new index of the old group.
            reIndex[i0] = k;

            // Retrieve the next old key.
            if (g0 = oldGroups[++i0]) x0 = g0.key;
          } else {
            g = {key: x1, value: initial()}, x = x1;
          }

          // Add the lesser group.
          groups[k] = g;

          // Add any selected records belonging to the added group, while
          // advancing the new key and populating the associated group index.
          while (x1 <= x || !(x1 <= x1) && !(x <= x)) {
            groupIndex[j = newIndex[i1] + n0] = k;
            if (!(filters[j] & zero)) g.value = add(g.value, data[j]);
            if (++i1 >= n1) break;
            x1 = key(newValues[i1]);
          }

          groupIncrement();
        }

        // Add any remaining old groups that were greater than all new keys.
        // No incremental reduce is needed; these groups have no new records.
        // Also record the new index of the old group.
        while (i0 < k0) {
          groups[reIndex[i0] = k] = oldGroups[i0++];
          groupIncrement();
        }

        // If we added any new groups before any old groups,
        // update the group index of all the old records.
        if (k > i0) for (i0 = 0; i0 < n0; ++i0) {
          groupIndex[i0] = reIndex[groupIndex[i0]];
        }

        // Modify the update and reset behavior based on the cardinality.
        // If the cardinality is less than or equal to one, then the groupIndex
        // is not needed. If the cardinality is zero, then there are no records
        // and therefore no groups to update or reset. Note that we also must
        // change the registered listener to point to the new method.
        j = filterListeners.indexOf(update);
        if (k > 1) {
          update = updateMany;
          reset = resetMany;
        } else {
          if (k === 1) {
            update = updateOne;
            reset = resetOne;
          } else {
            update = crossfilter_null;
            reset = crossfilter_null;
          }
          groupIndex = null;
        }
        filterListeners[j] = update;

        // Count the number of added groups,
        // and widen the group index as needed.
        function groupIncrement() {
          if (++k === groupCapacity) {
            reIndex = crossfilter_arrayWiden(reIndex, groupWidth <<= 1);
            groupIndex = crossfilter_arrayWiden(groupIndex, groupWidth);
            groupCapacity = crossfilter_capacity(groupWidth);
          }
        }
      }

      // Reduces the specified selected or deselected records.
      // This function is only used when the cardinality is greater than 1.
      function updateMany(filterOne, added, removed) {
        if (filterOne === one || resetNeeded) return;

        var i,
            k,
            n,
            g;

        // Add the added values.
        for (i = 0, n = added.length; i < n; ++i) {
          if (!(filters[k = added[i]] & zero)) {
            g = groups[groupIndex[k]];
            g.value = reduceAdd(g.value, data[k]);
          }
        }

        // Remove the removed values.
        for (i = 0, n = removed.length; i < n; ++i) {
          if ((filters[k = removed[i]] & zero) === filterOne) {
            g = groups[groupIndex[k]];
            g.value = reduceRemove(g.value, data[k]);
          }
        }
      }

      // Reduces the specified selected or deselected records.
      // This function is only used when the cardinality is 1.
      function updateOne(filterOne, added, removed) {
        if (filterOne === one || resetNeeded) return;

        var i,
            k,
            n,
            g = groups[0];

        // Add the added values.
        for (i = 0, n = added.length; i < n; ++i) {
          if (!(filters[k = added[i]] & zero)) {
            g.value = reduceAdd(g.value, data[k]);
          }
        }

        // Remove the removed values.
        for (i = 0, n = removed.length; i < n; ++i) {
          if ((filters[k = removed[i]] & zero) === filterOne) {
            g.value = reduceRemove(g.value, data[k]);
          }
        }
      }

      // Recomputes the group reduce values from scratch.
      // This function is only used when the cardinality is greater than 1.
      function resetMany() {
        var i,
            g;

        // Reset all group values.
        for (i = 0; i < k; ++i) {
          groups[i].value = reduceInitial();
        }

        // Add any selected records.
        for (i = 0; i < n; ++i) {
          if (!(filters[i] & zero)) {
            g = groups[groupIndex[i]];
            g.value = reduceAdd(g.value, data[i]);
          }
        }
      }

      // Recomputes the group reduce values from scratch.
      // This function is only used when the cardinality is 1.
      function resetOne() {
        var i,
            g = groups[0];

        // Reset the singleton group values.
        g.value = reduceInitial();

        // Add any selected records.
        for (i = 0; i < n; ++i) {
          if (!(filters[i] & zero)) {
            g.value = reduceAdd(g.value, data[i]);
          }
        }
      }

      // Returns the array of group values, in the dimension's natural order.
      function all() {
        if (resetNeeded) reset(), resetNeeded = false;
        return groups;
      }

      // Returns a new array containing the top K group values, in reduce order.
      function top(k) {
        var top = select(all(), 0, groups.length, k);
        return heap.sort(top, 0, top.length);
      }

      // Sets the reduce behavior for this group to use the specified functions.
      // This method lazily recomputes the reduce values, waiting until needed.
      function reduce(add, remove, initial) {
        reduceAdd = add;
        reduceRemove = remove;
        reduceInitial = initial;
        resetNeeded = true;
        return group;
      }

      // A convenience method for reducing by count.
      function reduceCount() {
        return reduce(crossfilter_reduceIncrement, crossfilter_reduceDecrement, crossfilter_zero);
      }

      // A convenience method for reducing by sum(value).
      function reduceSum(value) {
        return reduce(crossfilter_reduceAdd(value), crossfilter_reduceSubtract(value), crossfilter_zero);
      }

      // Sets the reduce order, using the specified accessor.
      function order(value) {
        select = heapselect_by(valueOf);
        heap = heap_by(valueOf);
        function valueOf(d) { return value(d.value); }
        return group;
      }

      // A convenience method for natural ordering by reduce value.
      function orderNatural() {
        return order(crossfilter_identity);
      }

      // Returns the cardinality of this group, irrespective of any filters.
      function size() {
        return k;
      }

      return reduceCount().orderNatural();
    }

    // A convenience function for generating a singleton group.
    function groupAll() {
      var g = group(crossfilter_null), all = g.all;
      delete g.all;
      delete g.top;
      delete g.order;
      delete g.orderNatural;
      delete g.size;
      g.value = function() { return all()[0].value; };
      return g;
    }

    return dimension;
  }

  // A convenience method for groupAll on a dummy dimension.
  // This implementation can be optimized since it is always cardinality 1.
  function groupAll() {
    var group = {
      reduce: reduce,
      reduceCount: reduceCount,
      reduceSum: reduceSum,
      value: value
    };

    var reduceValue,
        reduceAdd,
        reduceRemove,
        reduceInitial,
        resetNeeded = true;

    // The group listens to the crossfilter for when any dimension changes, so
    // that it can update the reduce value. It must also listen to the parent
    // dimension for when data is added.
    filterListeners.push(update);
    dataListeners.push(add);

    // For consistency; actually a no-op since resetNeeded is true.
    add(data, 0, n);

    // Incorporates the specified new values into this group.
    function add(newData, n0) {
      var i;

      if (resetNeeded) return;

      // Add the added values.
      for (i = n0; i < n; ++i) {
        if (!filters[i]) {
          reduceValue = reduceAdd(reduceValue, data[i]);
        }
      }
    }

    // Reduces the specified selected or deselected records.
    function update(filterOne, added, removed) {
      var i,
          k,
          n;

      if (resetNeeded) return;

      // Add the added values.
      for (i = 0, n = added.length; i < n; ++i) {
        if (!filters[k = added[i]]) {
          reduceValue = reduceAdd(reduceValue, data[k]);
        }
      }

      // Remove the removed values.
      for (i = 0, n = removed.length; i < n; ++i) {
        if (filters[k = removed[i]] === filterOne) {
          reduceValue = reduceRemove(reduceValue, data[k]);
        }
      }
    }

    // Recomputes the group reduce value from scratch.
    function reset() {
      var i;

      reduceValue = reduceInitial();

      for (i = 0; i < n; ++i) {
        if (!filters[i]) {
          reduceValue = reduceAdd(reduceValue, data[i]);
        }
      }
    }

    // Sets the reduce behavior for this group to use the specified functions.
    // This method lazily recomputes the reduce value, waiting until needed.
    function reduce(add, remove, initial) {
      reduceAdd = add;
      reduceRemove = remove;
      reduceInitial = initial;
      resetNeeded = true;
      return group;
    }

    // A convenience method for reducing by count.
    function reduceCount() {
      return reduce(crossfilter_reduceIncrement, crossfilter_reduceDecrement, crossfilter_zero);
    }

    // A convenience method for reducing by sum(value).
    function reduceSum(value) {
      return reduce(crossfilter_reduceAdd(value), crossfilter_reduceSubtract(value), crossfilter_zero);
    }

    // Returns the computed reduce value.
    function value() {
      if (resetNeeded) reset(), resetNeeded = false;
      return reduceValue;
    }

    return reduceCount();
  }

  // Returns the number of records in this crossfilter, irrespective of any filters.
  function size() {
    return n;
  }

  return arguments.length
      ? add(arguments[0])
      : crossfilter;
 }

 // Returns an array of size n, big enough to store ids up to m.
 function crossfilter_index(n, m) {
  return (m < 0x101
      ? crossfilter_array8 : m < 0x10001
      ? crossfilter_array16
      : crossfilter_array32)(n);
 }

 // Constructs a new array of size n, with sequential values from 0 to n - 1.
 function crossfilter_range(n) {
  var range = crossfilter_index(n, n);
  for (var i = -1; ++i < n;) range[i] = i;
  return range;
 }

 function crossfilter_capacity(w) {
  return w === 8
      ? 0x100 : w === 16
      ? 0x10000
      : 0x100000000;
 }
 })(this);
diff --git a/d3.js b/d3.js
 d3 = function() {
  var π = Math.PI, ε = 1e-6, d3 = {
    version: "3.0.7"
  }, d3_radians = π / 180, d3_degrees = 180 / π, d3_document = document, d3_window = window;
  function d3_target(d) {
    return d.target;
  }
  function d3_source(d) {
    return d.source;
  }
  var d3_format_decimalPoint = ".", d3_format_thousandsSeparator = ",", d3_format_grouping = [ 3, 3 ];
  if (!Date.now) Date.now = function() {
    return +new Date();
  };
  try {
    d3_document.createElement("div").style.setProperty("opacity", 0, "");
  } catch (error) {
    var d3_style_prototype = d3_window.CSSStyleDeclaration.prototype, d3_style_setProperty = d3_style_prototype.setProperty;
    d3_style_prototype.setProperty = function(name, value, priority) {
      d3_style_setProperty.call(this, name, value + "", priority);
    };
  }
  function d3_class(ctor, properties) {
    try {
      for (var key in properties) {
        Object.defineProperty(ctor.prototype, key, {
          value: properties[key],
          enumerable: false
        });
      }
    } catch (e) {
      ctor.prototype = properties;
    }
  }
  var d3_array = d3_arraySlice;
  function d3_arrayCopy(pseudoarray) {
    var i = -1, n = pseudoarray.length, array = [];
    while (++i < n) array.push(pseudoarray[i]);
    return array;
  }
  function d3_arraySlice(pseudoarray) {
    return Array.prototype.slice.call(pseudoarray);
  }
  try {
    d3_array(d3_document.documentElement.childNodes)[0].nodeType;
  } catch (e) {
    d3_array = d3_arrayCopy;
  }
  var d3_arraySubclass = [].__proto__ ? function(array, prototype) {
    array.__proto__ = prototype;
  } : function(array, prototype) {
    for (var property in prototype) array[property] = prototype[property];
  };
  d3.map = function(object) {
    var map = new d3_Map();
    for (var key in object) map.set(key, object[key]);
    return map;
  };
  function d3_Map() {}
  d3_class(d3_Map, {
    has: function(key) {
      return d3_map_prefix + key in this;
    },
    get: function(key) {
      return this[d3_map_prefix + key];
    },
    set: function(key, value) {
      return this[d3_map_prefix + key] = value;
    },
    remove: function(key) {
      key = d3_map_prefix + key;
      return key in this && delete this[key];
    },
    keys: function() {
      var keys = [];
      this.forEach(function(key) {
        keys.push(key);
      });
      return keys;
    },
    values: function() {
      var values = [];
      this.forEach(function(key, value) {
        values.push(value);
      });
      return values;
    },
    entries: function() {
      var entries = [];
      this.forEach(function(key, value) {
        entries.push({
          key: key,
          value: value
        });
      });
      return entries;
    },
    forEach: function(f) {
      for (var key in this) {
        if (key.charCodeAt(0) === d3_map_prefixCode) {
          f.call(this, key.substring(1), this[key]);
        }
      }
    }
  });
  var d3_map_prefix = "\0", d3_map_prefixCode = d3_map_prefix.charCodeAt(0);
  function d3_identity(d) {
    return d;
  }
  function d3_true() {
    return true;
  }
  function d3_functor(v) {
    return typeof v === "function" ? v : function() {
      return v;
    };
  }
  d3.functor = d3_functor;
  d3.rebind = function(target, source) {
    var i = 1, n = arguments.length, method;
    while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
    return target;
  };
  function d3_rebind(target, source, method) {
    return function() {
      var value = method.apply(source, arguments);
      return value === source ? target : value;
    };
  }
  d3.ascending = function(a, b) {
    return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
  };
  d3.descending = function(a, b) {
    return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
  };
  d3.mean = function(array, f) {
    var n = array.length, a, m = 0, i = -1, j = 0;
    if (arguments.length === 1) {
      while (++i < n) if (d3_number(a = array[i])) m += (a - m) / ++j;
    } else {
      while (++i < n) if (d3_number(a = f.call(array, array[i], i))) m += (a - m) / ++j;
    }
    return j ? m : undefined;
  };
  d3.median = function(array, f) {
    if (arguments.length > 1) array = array.map(f);
    array = array.filter(d3_number);
    return array.length ? d3.quantile(array.sort(d3.ascending), .5) : undefined;
  };
  d3.min = function(array, f) {
    var i = -1, n = array.length, a, b;
    if (arguments.length === 1) {
      while (++i < n && ((a = array[i]) == null || a != a)) a = undefined;
      while (++i < n) if ((b = array[i]) != null && a > b) a = b;
    } else {
      while (++i < n && ((a = f.call(array, array[i], i)) == null || a != a)) a = undefined;
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
    }
    return a;
  };
  d3.max = function(array, f) {
    var i = -1, n = array.length, a, b;
    if (arguments.length === 1) {
      while (++i < n && ((a = array[i]) == null || a != a)) a = undefined;
      while (++i < n) if ((b = array[i]) != null && b > a) a = b;
    } else {
      while (++i < n && ((a = f.call(array, array[i], i)) == null || a != a)) a = undefined;
      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
    }
    return a;
  };
  d3.extent = function(array, f) {
    var i = -1, n = array.length, a, b, c;
    if (arguments.length === 1) {
      while (++i < n && ((a = c = array[i]) == null || a != a)) a = c = undefined;
      while (++i < n) if ((b = array[i]) != null) {
        if (a > b) a = b;
        if (c < b) c = b;
      }
    } else {
      while (++i < n && ((a = c = f.call(array, array[i], i)) == null || a != a)) a = undefined;
      while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
        if (a > b) a = b;
        if (c < b) c = b;
      }
    }
    return [ a, c ];
  };
  d3.random = {
    normal: function(µ, σ) {
      var n = arguments.length;
      if (n < 2) σ = 1;
      if (n < 1) µ = 0;
      return function() {
        var x, y, r;
        do {
          x = Math.random() * 2 - 1;
          y = Math.random() * 2 - 1;
          r = x * x + y * y;
        } while (!r || r > 1);
        return µ + σ * x * Math.sqrt(-2 * Math.log(r) / r);
      };
    },
    logNormal: function() {
      var random = d3.random.normal.apply(d3, arguments);
      return function() {
        return Math.exp(random());
      };
    },
    irwinHall: function(m) {
      return function() {
        for (var s = 0, j = 0; j < m; j++) s += Math.random();
        return s / m;
      };
    }
  };
  function d3_number(x) {
    return x != null && !isNaN(x);
  }
  d3.sum = function(array, f) {
    var s = 0, n = array.length, a, i = -1;
    if (arguments.length === 1) {
      while (++i < n) if (!isNaN(a = +array[i])) s += a;
    } else {
      while (++i < n) if (!isNaN(a = +f.call(array, array[i], i))) s += a;
    }
    return s;
  };
  d3.quantile = function(values, p) {
    var H = (values.length - 1) * p + 1, h = Math.floor(H), v = +values[h - 1], e = H - h;
    return e ? v + e * (values[h] - v) : v;
  };
  d3.shuffle = function(array) {
    var m = array.length, t, i;
    while (m) {
      i = Math.random() * m-- | 0;
      t = array[m], array[m] = array[i], array[i] = t;
    }
    return array;
  };
  d3.transpose = function(matrix) {
    return d3.zip.apply(d3, matrix);
  };
  d3.zip = function() {
    if (!(n = arguments.length)) return [];
    for (var i = -1, m = d3.min(arguments, d3_zipLength), zips = new Array(m); ++i < m; ) {
      for (var j = -1, n, zip = zips[i] = new Array(n); ++j < n; ) {
        zip[j] = arguments[j][i];
      }
    }
    return zips;
  };
  function d3_zipLength(d) {
    return d.length;
  }
  d3.bisector = function(f) {
    return {
      left: function(a, x, lo, hi) {
        if (arguments.length < 3) lo = 0;
        if (arguments.length < 4) hi = a.length;
        while (lo < hi) {
          var mid = lo + hi >>> 1;
          if (f.call(a, a[mid], mid) < x) lo = mid + 1; else hi = mid;
        }
        return lo;
      },
      right: function(a, x, lo, hi) {
        if (arguments.length < 3) lo = 0;
        if (arguments.length < 4) hi = a.length;
        while (lo < hi) {
          var mid = lo + hi >>> 1;
          if (x < f.call(a, a[mid], mid)) hi = mid; else lo = mid + 1;
        }
        return lo;
      }
    };
  };
  var d3_bisector = d3.bisector(function(d) {
    return d;
  });
  d3.bisectLeft = d3_bisector.left;
  d3.bisect = d3.bisectRight = d3_bisector.right;
  d3.nest = function() {
    var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
    function map(array, depth) {
      if (depth >= keys.length) return rollup ? rollup.call(nest, array) : sortValues ? array.sort(sortValues) : array;
      var i = -1, n = array.length, key = keys[depth++], keyValue, object, valuesByKey = new d3_Map(), values, o = {};
      while (++i < n) {
        if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
          values.push(object);
        } else {
          valuesByKey.set(keyValue, [ object ]);
        }
      }
      valuesByKey.forEach(function(keyValue, values) {
        o[keyValue] = map(values, depth);
      });
      return o;
    }
    function entries(map, depth) {
      if (depth >= keys.length) return map;
      var a = [], sortKey = sortKeys[depth++], key;
      for (key in map) {
        a.push({
          key: key,
          values: entries(map[key], depth)
        });
      }
      if (sortKey) a.sort(function(a, b) {
        return sortKey(a.key, b.key);
      });
      return a;
    }
    nest.map = function(array) {
      return map(array, 0);
    };
    nest.entries = function(array) {
      return entries(map(array, 0), 0);
    };
    nest.key = function(d) {
      keys.push(d);
      return nest;
    };
    nest.sortKeys = function(order) {
      sortKeys[keys.length - 1] = order;
      return nest;
    };
    nest.sortValues = function(order) {
      sortValues = order;
      return nest;
    };
    nest.rollup = function(f) {
      rollup = f;
      return nest;
    };
    return nest;
  };
  d3.keys = function(map) {
    var keys = [];
    for (var key in map) keys.push(key);
    return keys;
  };
  d3.values = function(map) {
    var values = [];
    for (var key in map) values.push(map[key]);
    return values;
  };
  d3.entries = function(map) {
    var entries = [];
    for (var key in map) entries.push({
      key: key,
      value: map[key]
    });
    return entries;
  };
  d3.permute = function(array, indexes) {
    var permutes = [], i = -1, n = indexes.length;
    while (++i < n) permutes[i] = array[indexes[i]];
    return permutes;
  };
  d3.merge = function(arrays) {
    return Array.prototype.concat.apply([], arrays);
  };
  function d3_collapse(s) {
    return s.trim().replace(/\s+/g, " ");
  }
  d3.range = function(start, stop, step) {
    if (arguments.length < 3) {
      step = 1;
      if (arguments.length < 2) {
        stop = start;
        start = 0;
      }
    }
    if ((stop - start) / step === Infinity) throw new Error("infinite range");
    var range = [], k = d3_range_integerScale(Math.abs(step)), i = -1, j;
    start *= k, stop *= k, step *= k;
    if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); else while ((j = start + step * ++i) < stop) range.push(j / k);
    return range;
  };
  function d3_range_integerScale(x) {
    var k = 1;
    while (x * k % 1) k *= 10;
    return k;
  }
  d3.requote = function(s) {
    return s.replace(d3_requote_re, "\\$&");
  };
  var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
  d3.round = function(x, n) {
    return n ? Math.round(x * (n = Math.pow(10, n))) / n : Math.round(x);
  };
  d3.xhr = function(url, mimeType, callback) {
    var xhr = {}, dispatch = d3.dispatch("progress", "load", "error"), headers = {}, response = d3_identity, request = new (d3_window.XDomainRequest && /^(http(s)?:)?\/\//.test(url) ? XDomainRequest : XMLHttpRequest)();
    "onload" in request ? request.onload = request.onerror = respond : request.onreadystatechange = function() {
      request.readyState > 3 && respond();
    };
    function respond() {
      var s = request.status;
      !s && request.responseText || s >= 200 && s < 300 || s === 304 ? dispatch.load.call(xhr, response.call(xhr, request)) : dispatch.error.call(xhr, request);
    }
    request.onprogress = function(event) {
      var o = d3.event;
      d3.event = event;
      try {
        dispatch.progress.call(xhr, request);
      } finally {
        d3.event = o;
      }
    };
    xhr.header = function(name, value) {
      name = (name + "").toLowerCase();
      if (arguments.length < 2) return headers[name];
      if (value == null) delete headers[name]; else headers[name] = value + "";
      return xhr;
    };
    xhr.mimeType = function(value) {
      if (!arguments.length) return mimeType;
      mimeType = value == null ? null : value + "";
      return xhr;
    };
    xhr.response = function(value) {
      response = value;
      return xhr;
    };
    [ "get", "post" ].forEach(function(method) {
      xhr[method] = function() {
        return xhr.send.apply(xhr, [ method ].concat(d3_array(arguments)));
      };
    });
    xhr.send = function(method, data, callback) {
      if (arguments.length === 2 && typeof data === "function") callback = data, data = null;
      request.open(method, url, true);
      if (mimeType != null && !("accept" in headers)) headers["accept"] = mimeType + ",*/*";
      if (request.setRequestHeader) for (var name in headers) request.setRequestHeader(name, headers[name]);
      if (mimeType != null && request.overrideMimeType) request.overrideMimeType(mimeType);
      if (callback != null) xhr.on("error", callback).on("load", function(request) {
        callback(null, request);
      });
      request.send(data == null ? null : data);
      return xhr;
    };
    xhr.abort = function() {
      request.abort();
      return xhr;
    };
    d3.rebind(xhr, dispatch, "on");
    if (arguments.length === 2 && typeof mimeType === "function") callback = mimeType, 
    mimeType = null;
    return callback == null ? xhr : xhr.get(d3_xhr_fixCallback(callback));
  };
  function d3_xhr_fixCallback(callback) {
    return callback.length === 1 ? function(error, request) {
      callback(error == null ? request : null);
    } : callback;
  }
  d3.text = function() {
    return d3.xhr.apply(d3, arguments).response(d3_text);
  };
  function d3_text(request) {
    return request.responseText;
  }
  d3.json = function(url, callback) {
    return d3.xhr(url, "application/json", callback).response(d3_json);
  };
  function d3_json(request) {
    return JSON.parse(request.responseText);
  }
  d3.html = function(url, callback) {
    return d3.xhr(url, "text/html", callback).response(d3_html);
  };
  function d3_html(request) {
    var range = d3_document.createRange();
    range.selectNode(d3_document.body);
    return range.createContextualFragment(request.responseText);
  }
  d3.xml = function() {
    return d3.xhr.apply(d3, arguments).response(d3_xml);
  };
  function d3_xml(request) {
    return request.responseXML;
  }
  var d3_nsPrefix = {
    svg: "http://www.w3.org/2000/svg",
    xhtml: "http://www.w3.org/1999/xhtml",
    xlink: "http://www.w3.org/1999/xlink",
    xml: "http://www.w3.org/XML/1998/namespace",
    xmlns: "http://www.w3.org/2000/xmlns/"
  };
  d3.ns = {
    prefix: d3_nsPrefix,
    qualify: function(name) {
      var i = name.indexOf(":"), prefix = name;
      if (i >= 0) {
        prefix = name.substring(0, i);
        name = name.substring(i + 1);
      }
      return d3_nsPrefix.hasOwnProperty(prefix) ? {
        space: d3_nsPrefix[prefix],
        local: name
      } : name;
    }
  };
  d3.dispatch = function() {
    var dispatch = new d3_dispatch(), i = -1, n = arguments.length;
    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
    return dispatch;
  };
  function d3_dispatch() {}
  d3_dispatch.prototype.on = function(type, listener) {
    var i = type.indexOf("."), name = "";
    if (i > 0) {
      name = type.substring(i + 1);
      type = type.substring(0, i);
    }
    return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
  };
  function d3_dispatch_event(dispatch) {
    var listeners = [], listenerByName = new d3_Map();
    function event() {
      var z = listeners, i = -1, n = z.length, l;
      while (++i < n) if (l = z[i].on) l.apply(this, arguments);
      return dispatch;
    }
    event.on = function(name, listener) {
      var l = listenerByName.get(name), i;
      if (arguments.length < 2) return l && l.on;
      if (l) {
        l.on = null;
        listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
        listenerByName.remove(name);
      }
      if (listener) listeners.push(listenerByName.set(name, {
        on: listener
      }));
      return dispatch;
    };
    return event;
  }
  d3.format = function(specifier) {
    var match = d3_format_re.exec(specifier), fill = match[1] || " ", align = match[2] || ">", sign = match[3] || "", basePrefix = match[4] || "", zfill = match[5], width = +match[6], comma = match[7], precision = match[8], type = match[9], scale = 1, suffix = "", integer = false;
    if (precision) precision = +precision.substring(1);
    if (zfill || fill === "0" && align === "=") {
      zfill = fill = "0";
      align = "=";
      if (comma) width -= Math.floor((width - 1) / 4);
    }
    switch (type) {
     case "n":
      comma = true;
      type = "g";
      break;

     case "%":
      scale = 100;
      suffix = "%";
      type = "f";
      break;

     case "p":
      scale = 100;
      suffix = "%";
      type = "r";
      break;

     case "b":
     case "o":
     case "x":
     case "X":
      if (basePrefix) basePrefix = "0" + type.toLowerCase();

     case "c":
     case "d":
      integer = true;
      precision = 0;
      break;

     case "s":
      scale = -1;
      type = "r";
      break;
    }
    if (basePrefix === "#") basePrefix = "";
    if (type == "r" && !precision) type = "g";
    type = d3_format_types.get(type) || d3_format_typeDefault;
    var zcomma = zfill && comma;
    return function(value) {
      if (integer && value % 1) return "";
      var negative = value < 0 || value === 0 && 1 / value < 0 ? (value = -value, "-") : sign;
      if (scale < 0) {
        var prefix = d3.formatPrefix(value, precision);
        value = prefix.scale(value);
        suffix = prefix.symbol;
      } else {
        value *= scale;
      }
      value = type(value, precision);
      if (!zfill && comma) value = d3_format_group(value);
      var length = basePrefix.length + value.length + (zcomma ? 0 : negative.length), padding = length < width ? new Array(length = width - length + 1).join(fill) : "";
      if (zcomma) value = d3_format_group(padding + value);
      if (d3_format_decimalPoint) value.replace(".", d3_format_decimalPoint);
      negative += basePrefix;
      return (align === "<" ? negative + value + padding : align === ">" ? padding + negative + value : align === "^" ? padding.substring(0, length >>= 1) + negative + value + padding.substring(length) : negative + (zcomma ? value : padding + value)) + suffix;
    };
  };
  var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?(#)?(0)?([0-9]+)?(,)?(\.[0-9]+)?([a-zA-Z%])?/;
  var d3_format_types = d3.map({
    b: function(x) {
      return x.toString(2);
    },
    c: function(x) {
      return String.fromCharCode(x);
    },
    o: function(x) {
      return x.toString(8);
    },
    x: function(x) {
      return x.toString(16);
    },
    X: function(x) {
      return x.toString(16).toUpperCase();
    },
    g: function(x, p) {
      return x.toPrecision(p);
    },
    e: function(x, p) {
      return x.toExponential(p);
    },
    f: function(x, p) {
      return x.toFixed(p);
    },
    r: function(x, p) {
      return (x = d3.round(x, d3_format_precision(x, p))).toFixed(Math.max(0, Math.min(20, d3_format_precision(x * (1 + 1e-15), p))));
    }
  });
  function d3_format_precision(x, p) {
    return p - (x ? Math.ceil(Math.log(x) / Math.LN10) : 1);
  }
  function d3_format_typeDefault(x) {
    return x + "";
  }
  var d3_format_group = d3_identity;
  if (d3_format_grouping) {
    var d3_format_groupingLength = d3_format_grouping.length;
    d3_format_group = function(value) {
      var i = value.lastIndexOf("."), f = i >= 0 ? "." + value.substring(i + 1) : (i = value.length, 
      ""), t = [], j = 0, g = d3_format_grouping[0];
      while (i > 0 && g > 0) {
        t.push(value.substring(i -= g, i + g));
        g = d3_format_grouping[j = (j + 1) % d3_format_groupingLength];
      }
      return t.reverse().join(d3_format_thousandsSeparator || "") + f;
    };
  }
  var d3_formatPrefixes = [ "y", "z", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "E", "Z", "Y" ].map(d3_formatPrefix);
  d3.formatPrefix = function(value, precision) {
    var i = 0;
    if (value) {
      if (value < 0) value *= -1;
      if (precision) value = d3.round(value, d3_format_precision(value, precision));
      i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
      i = Math.max(-24, Math.min(24, Math.floor((i <= 0 ? i + 1 : i - 1) / 3) * 3));
    }
    return d3_formatPrefixes[8 + i / 3];
  };
  function d3_formatPrefix(d, i) {
    var k = Math.pow(10, Math.abs(8 - i) * 3);
    return {
      scale: i > 8 ? function(d) {
        return d / k;
      } : function(d) {
        return d * k;
      },
      symbol: d
    };
  }
  var d3_ease_default = function() {
    return d3_identity;
  };
  var d3_ease = d3.map({
    linear: d3_ease_default,
    poly: d3_ease_poly,
    quad: function() {
      return d3_ease_quad;
    },
    cubic: function() {
      return d3_ease_cubic;
    },
    sin: function() {
      return d3_ease_sin;
    },
    exp: function() {
      return d3_ease_exp;
    },
    circle: function() {
      return d3_ease_circle;
    },
    elastic: d3_ease_elastic,
    back: d3_ease_back,
    bounce: function() {
      return d3_ease_bounce;
    }
  });
  var d3_ease_mode = d3.map({
    "in": d3_identity,
    out: d3_ease_reverse,
    "in-out": d3_ease_reflect,
    "out-in": function(f) {
      return d3_ease_reflect(d3_ease_reverse(f));
    }
  });
  d3.ease = function(name) {
    var i = name.indexOf("-"), t = i >= 0 ? name.substring(0, i) : name, m = i >= 0 ? name.substring(i + 1) : "in";
    t = d3_ease.get(t) || d3_ease_default;
    m = d3_ease_mode.get(m) || d3_identity;
    return d3_ease_clamp(m(t.apply(null, Array.prototype.slice.call(arguments, 1))));
  };
  function d3_ease_clamp(f) {
    return function(t) {
      return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
    };
  }
  function d3_ease_reverse(f) {
    return function(t) {
      return 1 - f(1 - t);
    };
  }
  function d3_ease_reflect(f) {
    return function(t) {
      return .5 * (t < .5 ? f(2 * t) : 2 - f(2 - 2 * t));
    };
  }
  function d3_ease_quad(t) {
    return t * t;
  }
  function d3_ease_cubic(t) {
    return t * t * t;
  }
  function d3_ease_cubicInOut(t) {
    if (t <= 0) return 0;
    if (t >= 1) return 1;
    var t2 = t * t, t3 = t2 * t;
    return 4 * (t < .5 ? t3 : 3 * (t - t2) + t3 - .75);
  }
  function d3_ease_poly(e) {
    return function(t) {
      return Math.pow(t, e);
    };
  }
  function d3_ease_sin(t) {
    return 1 - Math.cos(t * π / 2);
  }
  function d3_ease_exp(t) {
    return Math.pow(2, 10 * (t - 1));
  }
  function d3_ease_circle(t) {
    return 1 - Math.sqrt(1 - t * t);
  }
  function d3_ease_elastic(a, p) {
    var s;
    if (arguments.length < 2) p = .45;
    if (arguments.length) s = p / (2 * π) * Math.asin(1 / a); else a = 1, s = p / 4;
    return function(t) {
      return 1 + a * Math.pow(2, 10 * -t) * Math.sin((t - s) * 2 * π / p);
    };
  }
  function d3_ease_back(s) {
    if (!s) s = 1.70158;
    return function(t) {
      return t * t * ((s + 1) * t - s);
    };
  }
  function d3_ease_bounce(t) {
    return t < 1 / 2.75 ? 7.5625 * t * t : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75 : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375 : 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
  }
  d3.event = null;
  function d3_eventCancel() {
    d3.event.stopPropagation();
    d3.event.preventDefault();
  }
  function d3_eventSource() {
    var e = d3.event, s;
    while (s = e.sourceEvent) e = s;
    return e;
  }
  function d3_eventDispatch(target) {
    var dispatch = new d3_dispatch(), i = 0, n = arguments.length;
    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
    dispatch.of = function(thiz, argumentz) {
      return function(e1) {
        try {
          var e0 = e1.sourceEvent = d3.event;
          e1.target = target;
          d3.event = e1;
          dispatch[e1.type].apply(thiz, argumentz);
        } finally {
          d3.event = e0;
        }
      };
    };
    return dispatch;
  }
  d3.transform = function(string) {
    var g = d3_document.createElementNS(d3.ns.prefix.svg, "g");
    return (d3.transform = function(string) {
      g.setAttribute("transform", string);
      var t = g.transform.baseVal.consolidate();
      return new d3_transform(t ? t.matrix : d3_transformIdentity);
    })(string);
  };
  function d3_transform(m) {
    var r0 = [ m.a, m.b ], r1 = [ m.c, m.d ], kx = d3_transformNormalize(r0), kz = d3_transformDot(r0, r1), ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
    if (r0[0] * r1[1] < r1[0] * r0[1]) {
      r0[0] *= -1;
      r0[1] *= -1;
      kx *= -1;
      kz *= -1;
    }
    this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_degrees;
    this.translate = [ m.e, m.f ];
    this.scale = [ kx, ky ];
    this.skew = ky ? Math.atan2(kz, ky) * d3_degrees : 0;
  }
  d3_transform.prototype.toString = function() {
    return "translate(" + this.translate + ")rotate(" + this.rotate + ")skewX(" + this.skew + ")scale(" + this.scale + ")";
  };
  function d3_transformDot(a, b) {
    return a[0] * b[0] + a[1] * b[1];
  }
  function d3_transformNormalize(a) {
    var k = Math.sqrt(d3_transformDot(a, a));
    if (k) {
      a[0] /= k;
      a[1] /= k;
    }
    return k;
  }
  function d3_transformCombine(a, b, k) {
    a[0] += k * b[0];
    a[1] += k * b[1];
    return a;
  }
  var d3_transformIdentity = {
    a: 1,
    b: 0,
    c: 0,
    d: 1,
    e: 0,
    f: 0
  };
  d3.interpolate = function(a, b) {
    var i = d3.interpolators.length, f;
    while (--i >= 0 && !(f = d3.interpolators[i](a, b))) ;
    return f;
  };
  d3.interpolateNumber = function(a, b) {
    b -= a;
    return function(t) {
      return a + b * t;
    };
  };
  d3.interpolateRound = function(a, b) {
    b -= a;
    return function(t) {
      return Math.round(a + b * t);
    };
  };
  d3.interpolateString = function(a, b) {
    var m, i, j, s0 = 0, s1 = 0, s = [], q = [], n, o;
    d3_interpolate_number.lastIndex = 0;
    for (i = 0; m = d3_interpolate_number.exec(b); ++i) {
      if (m.index) s.push(b.substring(s0, s1 = m.index));
      q.push({
        i: s.length,
        x: m[0]
      });
      s.push(null);
      s0 = d3_interpolate_number.lastIndex;
    }
    if (s0 < b.length) s.push(b.substring(s0));
    for (i = 0, n = q.length; (m = d3_interpolate_number.exec(a)) && i < n; ++i) {
      o = q[i];
      if (o.x == m[0]) {
        if (o.i) {
          if (s[o.i + 1] == null) {
            s[o.i - 1] += o.x;
            s.splice(o.i, 1);
            for (j = i + 1; j < n; ++j) q[j].i--;
          } else {
            s[o.i - 1] += o.x + s[o.i + 1];
            s.splice(o.i, 2);
            for (j = i + 1; j < n; ++j) q[j].i -= 2;
          }
        } else {
          if (s[o.i + 1] == null) {
            s[o.i] = o.x;
          } else {
            s[o.i] = o.x + s[o.i + 1];
            s.splice(o.i + 1, 1);
            for (j = i + 1; j < n; ++j) q[j].i--;
          }
        }
        q.splice(i, 1);
        n--;
        i--;
      } else {
        o.x = d3.interpolateNumber(parseFloat(m[0]), parseFloat(o.x));
      }
    }
    while (i < n) {
      o = q.pop();
      if (s[o.i + 1] == null) {
        s[o.i] = o.x;
      } else {
        s[o.i] = o.x + s[o.i + 1];
        s.splice(o.i + 1, 1);
      }
      n--;
    }
    if (s.length === 1) {
      return s[0] == null ? q[0].x : function() {
        return b;
      };
    }
    return function(t) {
      for (i = 0; i < n; ++i) s[(o = q[i]).i] = o.x(t);
      return s.join("");
    };
  };
  d3.interpolateTransform = function(a, b) {
    var s = [], q = [], n, A = d3.transform(a), B = d3.transform(b), ta = A.translate, tb = B.translate, ra = A.rotate, rb = B.rotate, wa = A.skew, wb = B.skew, ka = A.scale, kb = B.scale;
    if (ta[0] != tb[0] || ta[1] != tb[1]) {
      s.push("translate(", null, ",", null, ")");
      q.push({
        i: 1,
        x: d3.interpolateNumber(ta[0], tb[0])
      }, {
        i: 3,
        x: d3.interpolateNumber(ta[1], tb[1])
      });
    } else if (tb[0] || tb[1]) {
      s.push("translate(" + tb + ")");
    } else {
      s.push("");
    }
    if (ra != rb) {
      if (ra - rb > 180) rb += 360; else if (rb - ra > 180) ra += 360;
      q.push({
        i: s.push(s.pop() + "rotate(", null, ")") - 2,
        x: d3.interpolateNumber(ra, rb)
      });
    } else if (rb) {
      s.push(s.pop() + "rotate(" + rb + ")");
    }
    if (wa != wb) {
      q.push({
        i: s.push(s.pop() + "skewX(", null, ")") - 2,
        x: d3.interpolateNumber(wa, wb)
      });
    } else if (wb) {
      s.push(s.pop() + "skewX(" + wb + ")");
    }
    if (ka[0] != kb[0] || ka[1] != kb[1]) {
      n = s.push(s.pop() + "scale(", null, ",", null, ")");
      q.push({
        i: n - 4,
        x: d3.interpolateNumber(ka[0], kb[0])
      }, {
        i: n - 2,
        x: d3.interpolateNumber(ka[1], kb[1])
      });
    } else if (kb[0] != 1 || kb[1] != 1) {
      s.push(s.pop() + "scale(" + kb + ")");
    }
    n = q.length;
    return function(t) {
      var i = -1, o;
      while (++i < n) s[(o = q[i]).i] = o.x(t);
      return s.join("");
    };
  };
  d3.interpolateRgb = function(a, b) {
    a = d3.rgb(a);
    b = d3.rgb(b);
    var ar = a.r, ag = a.g, ab = a.b, br = b.r - ar, bg = b.g - ag, bb = b.b - ab;
    return function(t) {
      return "#" + d3_rgb_hex(Math.round(ar + br * t)) + d3_rgb_hex(Math.round(ag + bg * t)) + d3_rgb_hex(Math.round(ab + bb * t));
    };
  };
  d3.interpolateHsl = function(a, b) {
    a = d3.hsl(a);
    b = d3.hsl(b);
    var h0 = a.h, s0 = a.s, l0 = a.l, h1 = b.h - h0, s1 = b.s - s0, l1 = b.l - l0;
    if (h1 > 180) h1 -= 360; else if (h1 < -180) h1 += 360;
    return function(t) {
      return d3_hsl_rgb(h0 + h1 * t, s0 + s1 * t, l0 + l1 * t) + "";
    };
  };
  d3.interpolateLab = function(a, b) {
    a = d3.lab(a);
    b = d3.lab(b);
    var al = a.l, aa = a.a, ab = a.b, bl = b.l - al, ba = b.a - aa, bb = b.b - ab;
    return function(t) {
      return d3_lab_rgb(al + bl * t, aa + ba * t, ab + bb * t) + "";
    };
  };
  d3.interpolateHcl = function(a, b) {
    a = d3.hcl(a);
    b = d3.hcl(b);
    var ah = a.h, ac = a.c, al = a.l, bh = b.h - ah, bc = b.c - ac, bl = b.l - al;
    if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
    return function(t) {
      return d3_hcl_lab(ah + bh * t, ac + bc * t, al + bl * t) + "";
    };
  };
  d3.interpolateArray = function(a, b) {
    var x = [], c = [], na = a.length, nb = b.length, n0 = Math.min(a.length, b.length), i;
    for (i = 0; i < n0; ++i) x.push(d3.interpolate(a[i], b[i]));
    for (;i < na; ++i) c[i] = a[i];
    for (;i < nb; ++i) c[i] = b[i];
    return function(t) {
      for (i = 0; i < n0; ++i) c[i] = x[i](t);
      return c;
    };
  };
  d3.interpolateObject = function(a, b) {
    var i = {}, c = {}, k;
    for (k in a) {
      if (k in b) {
        i[k] = d3_interpolateByName(k)(a[k], b[k]);
      } else {
        c[k] = a[k];
      }
    }
    for (k in b) {
      if (!(k in a)) {
        c[k] = b[k];
      }
    }
    return function(t) {
      for (k in i) c[k] = i[k](t);
      return c;
    };
  };
  var d3_interpolate_number = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g;
  function d3_interpolateByName(name) {
    return name == "transform" ? d3.interpolateTransform : d3.interpolate;
  }
  d3.interpolators = [ d3.interpolateObject, function(a, b) {
    return b instanceof Array && d3.interpolateArray(a, b);
  }, function(a, b) {
    return (typeof a === "string" || typeof b === "string") && d3.interpolateString(a + "", b + "");
  }, function(a, b) {
    return (typeof b === "string" ? d3_rgb_names.has(b) || /^(#|rgb\(|hsl\()/.test(b) : b instanceof d3_Color) && d3.interpolateRgb(a, b);
  }, function(a, b) {
    return !isNaN(a = +a) && !isNaN(b = +b) && d3.interpolateNumber(a, b);
  } ];
  function d3_uninterpolateNumber(a, b) {
    b = b - (a = +a) ? 1 / (b - a) : 0;
    return function(x) {
      return (x - a) * b;
    };
  }
  function d3_uninterpolateClamp(a, b) {
    b = b - (a = +a) ? 1 / (b - a) : 0;
    return function(x) {
      return Math.max(0, Math.min(1, (x - a) * b));
    };
  }
  function d3_Color() {}
  d3_Color.prototype.toString = function() {
    return this.rgb() + "";
  };
  d3.rgb = function(r, g, b) {
    return arguments.length === 1 ? r instanceof d3_Rgb ? d3_rgb(r.r, r.g, r.b) : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb) : d3_rgb(~~r, ~~g, ~~b);
  };
  function d3_rgb(r, g, b) {
    return new d3_Rgb(r, g, b);
  }
  function d3_Rgb(r, g, b) {
    this.r = r;
    this.g = g;
    this.b = b;
  }
  var d3_rgbPrototype = d3_Rgb.prototype = new d3_Color();
  d3_rgbPrototype.brighter = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    var r = this.r, g = this.g, b = this.b, i = 30;
    if (!r && !g && !b) return d3_rgb(i, i, i);
    if (r && r < i) r = i;
    if (g && g < i) g = i;
    if (b && b < i) b = i;
    return d3_rgb(Math.min(255, Math.floor(r / k)), Math.min(255, Math.floor(g / k)), Math.min(255, Math.floor(b / k)));
  };
  d3_rgbPrototype.darker = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return d3_rgb(Math.floor(k * this.r), Math.floor(k * this.g), Math.floor(k * this.b));
  };
  d3_rgbPrototype.hsl = function() {
    return d3_rgb_hsl(this.r, this.g, this.b);
  };
  d3_rgbPrototype.toString = function() {
    return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
  };
  function d3_rgb_hex(v) {
    return v < 16 ? "0" + Math.max(0, v).toString(16) : Math.min(255, v).toString(16);
  }
  function d3_rgb_parse(format, rgb, hsl) {
    var r = 0, g = 0, b = 0, m1, m2, name;
    m1 = /([a-z]+)\((.*)\)/i.exec(format);
    if (m1) {
      m2 = m1[2].split(",");
      switch (m1[1]) {
       case "hsl":
        {
          return hsl(parseFloat(m2[0]), parseFloat(m2[1]) / 100, parseFloat(m2[2]) / 100);
        }

       case "rgb":
        {
          return rgb(d3_rgb_parseNumber(m2[0]), d3_rgb_parseNumber(m2[1]), d3_rgb_parseNumber(m2[2]));
        }
      }
    }
    if (name = d3_rgb_names.get(format)) return rgb(name.r, name.g, name.b);
    if (format != null && format.charAt(0) === "#") {
      if (format.length === 4) {
        r = format.charAt(1);
        r += r;
        g = format.charAt(2);
        g += g;
        b = format.charAt(3);
        b += b;
      } else if (format.length === 7) {
        r = format.substring(1, 3);
        g = format.substring(3, 5);
        b = format.substring(5, 7);
      }
      r = parseInt(r, 16);
      g = parseInt(g, 16);
      b = parseInt(b, 16);
    }
    return rgb(r, g, b);
  }
  function d3_rgb_hsl(r, g, b) {
    var min = Math.min(r /= 255, g /= 255, b /= 255), max = Math.max(r, g, b), d = max - min, h, s, l = (max + min) / 2;
    if (d) {
      s = l < .5 ? d / (max + min) : d / (2 - max - min);
      if (r == max) h = (g - b) / d + (g < b ? 6 : 0); else if (g == max) h = (b - r) / d + 2; else h = (r - g) / d + 4;
      h *= 60;
    } else {
      s = h = 0;
    }
    return d3_hsl(h, s, l);
  }
  function d3_rgb_lab(r, g, b) {
    r = d3_rgb_xyz(r);
    g = d3_rgb_xyz(g);
    b = d3_rgb_xyz(b);
    var x = d3_xyz_lab((.4124564 * r + .3575761 * g + .1804375 * b) / d3_lab_X), y = d3_xyz_lab((.2126729 * r + .7151522 * g + .072175 * b) / d3_lab_Y), z = d3_xyz_lab((.0193339 * r + .119192 * g + .9503041 * b) / d3_lab_Z);
    return d3_lab(116 * y - 16, 500 * (x - y), 200 * (y - z));
  }
  function d3_rgb_xyz(r) {
    return (r /= 255) <= .04045 ? r / 12.92 : Math.pow((r + .055) / 1.055, 2.4);
  }
  function d3_rgb_parseNumber(c) {
    var f = parseFloat(c);
    return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
  }
  var d3_rgb_names = d3.map({
    aliceblue: "#f0f8ff",
    antiquewhite: "#faebd7",
    aqua: "#00ffff",
    aquamarine: "#7fffd4",
    azure: "#f0ffff",
    beige: "#f5f5dc",
    bisque: "#ffe4c4",
    black: "#000000",
    blanchedalmond: "#ffebcd",
    blue: "#0000ff",
    blueviolet: "#8a2be2",
    brown: "#a52a2a",
    burlywood: "#deb887",
    cadetblue: "#5f9ea0",
    chartreuse: "#7fff00",
    chocolate: "#d2691e",
    coral: "#ff7f50",
    cornflowerblue: "#6495ed",
    cornsilk: "#fff8dc",
    crimson: "#dc143c",
    cyan: "#00ffff",
    darkblue: "#00008b",
    darkcyan: "#008b8b",
    darkgoldenrod: "#b8860b",
    darkgray: "#a9a9a9",
    darkgreen: "#006400",
    darkgrey: "#a9a9a9",
    darkkhaki: "#bdb76b",
    darkmagenta: "#8b008b",
    darkolivegreen: "#556b2f",
    darkorange: "#ff8c00",
    darkorchid: "#9932cc",
    darkred: "#8b0000",
    darksalmon: "#e9967a",
    darkseagreen: "#8fbc8f",
    darkslateblue: "#483d8b",
    darkslategray: "#2f4f4f",
    darkslategrey: "#2f4f4f",
    darkturquoise: "#00ced1",
    darkviolet: "#9400d3",
    deeppink: "#ff1493",
    deepskyblue: "#00bfff",
    dimgray: "#696969",
    dimgrey: "#696969",
    dodgerblue: "#1e90ff",
    firebrick: "#b22222",
    floralwhite: "#fffaf0",
    forestgreen: "#228b22",
    fuchsia: "#ff00ff",
    gainsboro: "#dcdcdc",
    ghostwhite: "#f8f8ff",
    gold: "#ffd700",
    goldenrod: "#daa520",
    gray: "#808080",
    green: "#008000",
    greenyellow: "#adff2f",
    grey: "#808080",
    honeydew: "#f0fff0",
    hotpink: "#ff69b4",
    indianred: "#cd5c5c",
    indigo: "#4b0082",
    ivory: "#fffff0",
    khaki: "#f0e68c",
    lavender: "#e6e6fa",
    lavenderblush: "#fff0f5",
    lawngreen: "#7cfc00",
    lemonchiffon: "#fffacd",
    lightblue: "#add8e6",
    lightcoral: "#f08080",
    lightcyan: "#e0ffff",
    lightgoldenrodyellow: "#fafad2",
    lightgray: "#d3d3d3",
    lightgreen: "#90ee90",
    lightgrey: "#d3d3d3",
    lightpink: "#ffb6c1",
    lightsalmon: "#ffa07a",
    lightseagreen: "#20b2aa",
    lightskyblue: "#87cefa",
    lightslategray: "#778899",
    lightslategrey: "#778899",
    lightsteelblue: "#b0c4de",
    lightyellow: "#ffffe0",
    lime: "#00ff00",
    limegreen: "#32cd32",
    linen: "#faf0e6",
    magenta: "#ff00ff",
    maroon: "#800000",
    mediumaquamarine: "#66cdaa",
    mediumblue: "#0000cd",
    mediumorchid: "#ba55d3",
    mediumpurple: "#9370db",
    mediumseagreen: "#3cb371",
    mediumslateblue: "#7b68ee",
    mediumspringgreen: "#00fa9a",
    mediumturquoise: "#48d1cc",
    mediumvioletred: "#c71585",
    midnightblue: "#191970",
    mintcream: "#f5fffa",
    mistyrose: "#ffe4e1",
    moccasin: "#ffe4b5",
    navajowhite: "#ffdead",
    navy: "#000080",
    oldlace: "#fdf5e6",
    olive: "#808000",
    olivedrab: "#6b8e23",
    orange: "#ffa500",
    orangered: "#ff4500",
    orchid: "#da70d6",
    palegoldenrod: "#eee8aa",
    palegreen: "#98fb98",
    paleturquoise: "#afeeee",
    palevioletred: "#db7093",
    papayawhip: "#ffefd5",
    peachpuff: "#ffdab9",
    peru: "#cd853f",
    pink: "#ffc0cb",
    plum: "#dda0dd",
    powderblue: "#b0e0e6",
    purple: "#800080",
    red: "#ff0000",
    rosybrown: "#bc8f8f",
    royalblue: "#4169e1",
    saddlebrown: "#8b4513",
    salmon: "#fa8072",
    sandybrown: "#f4a460",
    seagreen: "#2e8b57",
    seashell: "#fff5ee",
    sienna: "#a0522d",
    silver: "#c0c0c0",
    skyblue: "#87ceeb",
    slateblue: "#6a5acd",
    slategray: "#708090",
    slategrey: "#708090",
    snow: "#fffafa",
    springgreen: "#00ff7f",
    steelblue: "#4682b4",
    tan: "#d2b48c",
    teal: "#008080",
    thistle: "#d8bfd8",
    tomato: "#ff6347",
    turquoise: "#40e0d0",
    violet: "#ee82ee",
    wheat: "#f5deb3",
    white: "#ffffff",
    whitesmoke: "#f5f5f5",
    yellow: "#ffff00",
    yellowgreen: "#9acd32"
  });
  d3_rgb_names.forEach(function(key, value) {
    d3_rgb_names.set(key, d3_rgb_parse(value, d3_rgb, d3_hsl_rgb));
  });
  d3.hsl = function(h, s, l) {
    return arguments.length === 1 ? h instanceof d3_Hsl ? d3_hsl(h.h, h.s, h.l) : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl) : d3_hsl(+h, +s, +l);
  };
  function d3_hsl(h, s, l) {
    return new d3_Hsl(h, s, l);
  }
  function d3_Hsl(h, s, l) {
    this.h = h;
    this.s = s;
    this.l = l;
  }
  var d3_hslPrototype = d3_Hsl.prototype = new d3_Color();
  d3_hslPrototype.brighter = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return d3_hsl(this.h, this.s, this.l / k);
  };
  d3_hslPrototype.darker = function(k) {
    k = Math.pow(.7, arguments.length ? k : 1);
    return d3_hsl(this.h, this.s, k * this.l);
  };
  d3_hslPrototype.rgb = function() {
    return d3_hsl_rgb(this.h, this.s, this.l);
  };
  function d3_hsl_rgb(h, s, l) {
    var m1, m2;
    h = h % 360;
    if (h < 0) h += 360;
    s = s < 0 ? 0 : s > 1 ? 1 : s;
    l = l < 0 ? 0 : l > 1 ? 1 : l;
    m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
    m1 = 2 * l - m2;
    function v(h) {
      if (h > 360) h -= 360; else if (h < 0) h += 360;
      if (h < 60) return m1 + (m2 - m1) * h / 60;
      if (h < 180) return m2;
      if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
      return m1;
    }
    function vv(h) {
      return Math.round(v(h) * 255);
    }
    return d3_rgb(vv(h + 120), vv(h), vv(h - 120));
  }
  d3.hcl = function(h, c, l) {
    return arguments.length === 1 ? h instanceof d3_Hcl ? d3_hcl(h.h, h.c, h.l) : h instanceof d3_Lab ? d3_lab_hcl(h.l, h.a, h.b) : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b) : d3_hcl(+h, +c, +l);
  };
  function d3_hcl(h, c, l) {
    return new d3_Hcl(h, c, l);
  }
  function d3_Hcl(h, c, l) {
    this.h = h;
    this.c = c;
    this.l = l;
  }
  var d3_hclPrototype = d3_Hcl.prototype = new d3_Color();
  d3_hclPrototype.brighter = function(k) {
    return d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)));
  };
  d3_hclPrototype.darker = function(k) {
    return d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)));
  };
  d3_hclPrototype.rgb = function() {
    return d3_hcl_lab(this.h, this.c, this.l).rgb();
  };
  function d3_hcl_lab(h, c, l) {
    return d3_lab(l, Math.cos(h *= d3_radians) * c, Math.sin(h) * c);
  }
  d3.lab = function(l, a, b) {
    return arguments.length === 1 ? l instanceof d3_Lab ? d3_lab(l.l, l.a, l.b) : l instanceof d3_Hcl ? d3_hcl_lab(l.l, l.c, l.h) : d3_rgb_lab((l = d3.rgb(l)).r, l.g, l.b) : d3_lab(+l, +a, +b);
  };
  function d3_lab(l, a, b) {
    return new d3_Lab(l, a, b);
  }
  function d3_Lab(l, a, b) {
    this.l = l;
    this.a = a;
    this.b = b;
  }
  var d3_lab_K = 18;
  var d3_lab_X = .95047, d3_lab_Y = 1, d3_lab_Z = 1.08883;
  var d3_labPrototype = d3_Lab.prototype = new d3_Color();
  d3_labPrototype.brighter = function(k) {
    return d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
  };
  d3_labPrototype.darker = function(k) {
    return d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
  };
  d3_labPrototype.rgb = function() {
    return d3_lab_rgb(this.l, this.a, this.b);
  };
  function d3_lab_rgb(l, a, b) {
    var y = (l + 16) / 116, x = y + a / 500, z = y - b / 200;
    x = d3_lab_xyz(x) * d3_lab_X;
    y = d3_lab_xyz(y) * d3_lab_Y;
    z = d3_lab_xyz(z) * d3_lab_Z;
    return d3_rgb(d3_xyz_rgb(3.2404542 * x - 1.5371385 * y - .4985314 * z), d3_xyz_rgb(-.969266 * x + 1.8760108 * y + .041556 * z), d3_xyz_rgb(.0556434 * x - .2040259 * y + 1.0572252 * z));
  }
  function d3_lab_hcl(l, a, b) {
    return d3_hcl(Math.atan2(b, a) / π * 180, Math.sqrt(a * a + b * b), l);
  }
  function d3_lab_xyz(x) {
    return x > .206893034 ? x * x * x : (x - 4 / 29) / 7.787037;
  }
  function d3_xyz_lab(x) {
    return x > .008856 ? Math.pow(x, 1 / 3) : 7.787037 * x + 4 / 29;
  }
  function d3_xyz_rgb(r) {
    return Math.round(255 * (r <= .00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - .055));
  }
  function d3_selection(groups) {
    d3_arraySubclass(groups, d3_selectionPrototype);
    return groups;
  }
  var d3_select = function(s, n) {
    return n.querySelector(s);
  }, d3_selectAll = function(s, n) {
    return n.querySelectorAll(s);
  }, d3_selectRoot = d3_document.documentElement, d3_selectMatcher = d3_selectRoot.matchesSelector || d3_selectRoot.webkitMatchesSelector || d3_selectRoot.mozMatchesSelector || d3_selectRoot.msMatchesSelector || d3_selectRoot.oMatchesSelector, d3_selectMatches = function(n, s) {
    return d3_selectMatcher.call(n, s);
  };
  if (typeof Sizzle === "function") {
    d3_select = function(s, n) {
      return Sizzle(s, n)[0] || null;
    };
    d3_selectAll = function(s, n) {
      return Sizzle.uniqueSort(Sizzle(s, n));
    };
    d3_selectMatches = Sizzle.matchesSelector;
  }
  var d3_selectionPrototype = [];
  d3.selection = function() {
    return d3_selectionRoot;
  };
  d3.selection.prototype = d3_selectionPrototype;
  d3_selectionPrototype.select = function(selector) {
    var subgroups = [], subgroup, subnode, group, node;
    if (typeof selector !== "function") selector = d3_selection_selector(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      subgroup.parentNode = (group = this[j]).parentNode;
      for (var i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroup.push(subnode = selector.call(node, node.__data__, i));
          if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_selector(selector) {
    return function() {
      return d3_select(selector, this);
    };
  }
  d3_selectionPrototype.selectAll = function(selector) {
    var subgroups = [], subgroup, node;
    if (typeof selector !== "function") selector = d3_selection_selectorAll(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i)));
          subgroup.parentNode = node;
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_selectorAll(selector) {
    return function() {
      return d3_selectAll(selector, this);
    };
  }
  d3_selectionPrototype.attr = function(name, value) {
    if (arguments.length < 2) {
      if (typeof name === "string") {
        var node = this.node();
        name = d3.ns.qualify(name);
        return name.local ? node.getAttributeNS(name.space, name.local) : node.getAttribute(name);
      }
      for (value in name) this.each(d3_selection_attr(value, name[value]));
      return this;
    }
    return this.each(d3_selection_attr(name, value));
  };
  function d3_selection_attr(name, value) {
    name = d3.ns.qualify(name);
    function attrNull() {
      this.removeAttribute(name);
    }
    function attrNullNS() {
      this.removeAttributeNS(name.space, name.local);
    }
    function attrConstant() {
      this.setAttribute(name, value);
    }
    function attrConstantNS() {
      this.setAttributeNS(name.space, name.local, value);
    }
    function attrFunction() {
      var x = value.apply(this, arguments);
      if (x == null) this.removeAttribute(name); else this.setAttribute(name, x);
    }
    function attrFunctionNS() {
      var x = value.apply(this, arguments);
      if (x == null) this.removeAttributeNS(name.space, name.local); else this.setAttributeNS(name.space, name.local, x);
    }
    return value == null ? name.local ? attrNullNS : attrNull : typeof value === "function" ? name.local ? attrFunctionNS : attrFunction : name.local ? attrConstantNS : attrConstant;
  }
  d3_selectionPrototype.classed = function(name, value) {
    if (arguments.length < 2) {
      if (typeof name === "string") {
        var node = this.node(), n = (name = name.trim().split(/^|\s+/g)).length, i = -1;
        if (value = node.classList) {
          while (++i < n) if (!value.contains(name[i])) return false;
        } else {
          value = node.className;
          if (value.baseVal != null) value = value.baseVal;
          while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false;
        }
        return true;
      }
      for (value in name) this.each(d3_selection_classed(value, name[value]));
      return this;
    }
    return this.each(d3_selection_classed(name, value));
  };
  function d3_selection_classedRe(name) {
    return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g");
  }
  function d3_selection_classed(name, value) {
    name = name.trim().split(/\s+/).map(d3_selection_classedName);
    var n = name.length;
    function classedConstant() {
      var i = -1;
      while (++i < n) name[i](this, value);
    }
    function classedFunction() {
      var i = -1, x = value.apply(this, arguments);
      while (++i < n) name[i](this, x);
    }
    return typeof value === "function" ? classedFunction : classedConstant;
  }
  function d3_selection_classedName(name) {
    var re = d3_selection_classedRe(name);
    return function(node, value) {
      if (c = node.classList) return value ? c.add(name) : c.remove(name);
      var c = node.className, cb = c.baseVal != null, cv = cb ? c.baseVal : c;
      if (value) {
        re.lastIndex = 0;
        if (!re.test(cv)) {
          cv = d3_collapse(cv + " " + name);
          if (cb) c.baseVal = cv; else node.className = cv;
        }
      } else if (cv) {
        cv = d3_collapse(cv.replace(re, " "));
        if (cb) c.baseVal = cv; else node.className = cv;
      }
    };
  }
  d3_selectionPrototype.style = function(name, value, priority) {
    var n = arguments.length;
    if (n < 3) {
      if (typeof name !== "string") {
        if (n < 2) value = "";
        for (priority in name) this.each(d3_selection_style(priority, name[priority], value));
        return this;
      }
      if (n < 2) return d3_window.getComputedStyle(this.node(), null).getPropertyValue(name);
      priority = "";
    }
    return this.each(d3_selection_style(name, value, priority));
  };
  function d3_selection_style(name, value, priority) {
    function styleNull() {
      this.style.removeProperty(name);
    }
    function styleConstant() {
      this.style.setProperty(name, value, priority);
    }
    function styleFunction() {
      var x = value.apply(this, arguments);
      if (x == null) this.style.removeProperty(name); else this.style.setProperty(name, x, priority);
    }
    return value == null ? styleNull : typeof value === "function" ? styleFunction : styleConstant;
  }
  d3_selectionPrototype.property = function(name, value) {
    if (arguments.length < 2) {
      if (typeof name === "string") return this.node()[name];
      for (value in name) this.each(d3_selection_property(value, name[value]));
      return this;
    }
    return this.each(d3_selection_property(name, value));
  };
  function d3_selection_property(name, value) {
    function propertyNull() {
      delete this[name];
    }
    function propertyConstant() {
      this[name] = value;
    }
    function propertyFunction() {
      var x = value.apply(this, arguments);
      if (x == null) delete this[name]; else this[name] = x;
    }
    return value == null ? propertyNull : typeof value === "function" ? propertyFunction : propertyConstant;
  }
  d3_selectionPrototype.text = function(value) {
    return arguments.length ? this.each(typeof value === "function" ? function() {
      var v = value.apply(this, arguments);
      this.textContent = v == null ? "" : v;
    } : value == null ? function() {
      this.textContent = "";
    } : function() {
      this.textContent = value;
    }) : this.node().textContent;
  };
  d3_selectionPrototype.html = function(value) {
    return arguments.length ? this.each(typeof value === "function" ? function() {
      var v = value.apply(this, arguments);
      this.innerHTML = v == null ? "" : v;
    } : value == null ? function() {
      this.innerHTML = "";
    } : function() {
      this.innerHTML = value;
    }) : this.node().innerHTML;
  };
  d3_selectionPrototype.append = function(name) {
    name = d3.ns.qualify(name);
    function append() {
      return this.appendChild(d3_document.createElementNS(this.namespaceURI, name));
    }
    function appendNS() {
      return this.appendChild(d3_document.createElementNS(name.space, name.local));
    }
    return this.select(name.local ? appendNS : append);
  };
  d3_selectionPrototype.insert = function(name, before) {
    name = d3.ns.qualify(name);
    function insert() {
      return this.insertBefore(d3_document.createElementNS(this.namespaceURI, name), d3_select(before, this));
    }
    function insertNS() {
      return this.insertBefore(d3_document.createElementNS(name.space, name.local), d3_select(before, this));
    }
    return this.select(name.local ? insertNS : insert);
  };
  d3_selectionPrototype.remove = function() {
    return this.each(function() {
      var parent = this.parentNode;
      if (parent) parent.removeChild(this);
    });
  };
  d3_selectionPrototype.data = function(value, key) {
    var i = -1, n = this.length, group, node;
    if (!arguments.length) {
      value = new Array(n = (group = this[0]).length);
      while (++i < n) {
        if (node = group[i]) {
          value[i] = node.__data__;
        }
      }
      return value;
    }
    function bind(group, groupData) {
      var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), updateNodes = new Array(m), enterNodes = new Array(m), exitNodes = new Array(n), node, nodeData;
      if (key) {
        var nodeByKeyValue = new d3_Map(), dataByKeyValue = new d3_Map(), keyValues = [], keyValue;
        for (i = -1; ++i < n; ) {
          keyValue = key.call(node = group[i], node.__data__, i);
          if (nodeByKeyValue.has(keyValue)) {
            exitNodes[i] = node;
          } else {
            nodeByKeyValue.set(keyValue, node);
          }
          keyValues.push(keyValue);
        }
        for (i = -1; ++i < m; ) {
          keyValue = key.call(groupData, nodeData = groupData[i], i);
          if (node = nodeByKeyValue.get(keyValue)) {
            updateNodes[i] = node;
            node.__data__ = nodeData;
          } else if (!dataByKeyValue.has(keyValue)) {
            enterNodes[i] = d3_selection_dataNode(nodeData);
          }
          dataByKeyValue.set(keyValue, nodeData);
          nodeByKeyValue.remove(keyValue);
        }
        for (i = -1; ++i < n; ) {
          if (nodeByKeyValue.has(keyValues[i])) {
            exitNodes[i] = group[i];
          }
        }
      } else {
        for (i = -1; ++i < n0; ) {
          node = group[i];
          nodeData = groupData[i];
          if (node) {
            node.__data__ = nodeData;
            updateNodes[i] = node;
          } else {
            enterNodes[i] = d3_selection_dataNode(nodeData);
          }
        }
        for (;i < m; ++i) {
          enterNodes[i] = d3_selection_dataNode(groupData[i]);
        }
        for (;i < n; ++i) {
          exitNodes[i] = group[i];
        }
      }
      enterNodes.update = updateNodes;
      enterNodes.parentNode = updateNodes.parentNode = exitNodes.parentNode = group.parentNode;
      enter.push(enterNodes);
      update.push(updateNodes);
      exit.push(exitNodes);
    }
    var enter = d3_selection_enter([]), update = d3_selection([]), exit = d3_selection([]);
    if (typeof value === "function") {
      while (++i < n) {
        bind(group = this[i], value.call(group, group.parentNode.__data__, i));
      }
    } else {
      while (++i < n) {
        bind(group = this[i], value);
      }
    }
    update.enter = function() {
      return enter;
    };
    update.exit = function() {
      return exit;
    };
    return update;
  };
  function d3_selection_dataNode(data) {
    return {
      __data__: data
    };
  }
  d3_selectionPrototype.datum = function(value) {
    return arguments.length ? this.property("__data__", value) : this.property("__data__");
  };
  d3_selectionPrototype.filter = function(filter) {
    var subgroups = [], subgroup, group, node;
    if (typeof filter !== "function") filter = d3_selection_filter(filter);
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      subgroup.parentNode = (group = this[j]).parentNode;
      for (var i = 0, n = group.length; i < n; i++) {
        if ((node = group[i]) && filter.call(node, node.__data__, i)) {
          subgroup.push(node);
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_selection_filter(selector) {
    return function() {
      return d3_selectMatches(this, selector);
    };
  }
  d3_selectionPrototype.order = function() {
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0; ) {
        if (node = group[i]) {
          if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
          next = node;
        }
      }
    }
    return this;
  };
  d3_selectionPrototype.sort = function(comparator) {
    comparator = d3_selection_sortComparator.apply(this, arguments);
    for (var j = -1, m = this.length; ++j < m; ) this[j].sort(comparator);
    return this.order();
  };
  function d3_selection_sortComparator(comparator) {
    if (!arguments.length) comparator = d3.ascending;
    return function(a, b) {
      return !a - !b || comparator(a.__data__, b.__data__);
    };
  }
  d3_selectionPrototype.on = function(type, listener, capture) {
    var n = arguments.length;
    if (n < 3) {
      if (typeof type !== "string") {
        if (n < 2) listener = false;
        for (capture in type) this.each(d3_selection_on(capture, type[capture], listener));
        return this;
      }
      if (n < 2) return (n = this.node()["__on" + type]) && n._;
      capture = false;
    }
    return this.each(d3_selection_on(type, listener, capture));
  };
  function d3_selection_on(type, listener, capture) {
    var name = "__on" + type, i = type.indexOf(".");
    if (i > 0) type = type.substring(0, i);
    function onRemove() {
      var wrapper = this[name];
      if (wrapper) {
        this.removeEventListener(type, wrapper, wrapper.$);
        delete this[name];
      }
    }
    function onAdd() {
      var node = this, args = d3_array(arguments);
      onRemove.call(this);
      this.addEventListener(type, this[name] = wrapper, wrapper.$ = capture);
      wrapper._ = listener;
      function wrapper(e) {
        var o = d3.event;
        d3.event = e;
        args[0] = node.__data__;
        try {
          listener.apply(node, args);
        } finally {
          d3.event = o;
        }
      }
    }
    return listener ? onAdd : onRemove;
  }
  d3_selectionPrototype.each = function(callback) {
    return d3_selection_each(this, function(node, i, j) {
      callback.call(node, node.__data__, i, j);
    });
  };
  function d3_selection_each(groups, callback) {
    for (var j = 0, m = groups.length; j < m; j++) {
      for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) {
        if (node = group[i]) callback(node, i, j);
      }
    }
    return groups;
  }
  d3_selectionPrototype.call = function(callback) {
    var args = d3_array(arguments);
    callback.apply(args[0] = this, args);
    return this;
  };
  d3_selectionPrototype.empty = function() {
    return !this.node();
  };
  d3_selectionPrototype.node = function() {
    for (var j = 0, m = this.length; j < m; j++) {
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        var node = group[i];
        if (node) return node;
      }
    }
    return null;
  };
  d3_selectionPrototype.transition = function() {
    var id = d3_transitionInheritId || ++d3_transitionId, subgroups = [], subgroup, node, transition = Object.create(d3_transitionInherit);
    transition.time = Date.now();
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) d3_transitionNode(node, i, id, transition);
        subgroup.push(node);
      }
    }
    return d3_transition(subgroups, id);
  };
  var d3_selectionRoot = d3_selection([ [ d3_document ] ]);
  d3_selectionRoot[0].parentNode = d3_selectRoot;
  d3.select = function(selector) {
    return typeof selector === "string" ? d3_selectionRoot.select(selector) : d3_selection([ [ selector ] ]);
  };
  d3.selectAll = function(selector) {
    return typeof selector === "string" ? d3_selectionRoot.selectAll(selector) : d3_selection([ d3_array(selector) ]);
  };
  function d3_selection_enter(selection) {
    d3_arraySubclass(selection, d3_selection_enterPrototype);
    return selection;
  }
  var d3_selection_enterPrototype = [];
  d3.selection.enter = d3_selection_enter;
  d3.selection.enter.prototype = d3_selection_enterPrototype;
  d3_selection_enterPrototype.append = d3_selectionPrototype.append;
  d3_selection_enterPrototype.insert = d3_selectionPrototype.insert;
  d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
  d3_selection_enterPrototype.node = d3_selectionPrototype.node;
  d3_selection_enterPrototype.select = function(selector) {
    var subgroups = [], subgroup, subnode, upgroup, group, node;
    for (var j = -1, m = this.length; ++j < m; ) {
      upgroup = (group = this[j]).update;
      subgroups.push(subgroup = []);
      subgroup.parentNode = group.parentNode;
      for (var i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i));
          subnode.__data__ = node.__data__;
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_selection(subgroups);
  };
  function d3_transition(groups, id) {
    d3_arraySubclass(groups, d3_transitionPrototype);
    groups.id = id;
    return groups;
  }
  var d3_transitionPrototype = [], d3_transitionId = 0, d3_transitionInheritId, d3_transitionInherit = {
    ease: d3_ease_cubicInOut,
    delay: 0,
    duration: 250
  };
  d3_transitionPrototype.call = d3_selectionPrototype.call;
  d3_transitionPrototype.empty = d3_selectionPrototype.empty;
  d3_transitionPrototype.node = d3_selectionPrototype.node;
  d3.transition = function(selection) {
    return arguments.length ? d3_transitionInheritId ? selection.transition() : selection : d3_selectionRoot.transition();
  };
  d3.transition.prototype = d3_transitionPrototype;
  function d3_transitionNode(node, i, id, inherit) {
    var lock = node.__transition__ || (node.__transition__ = {
      active: 0,
      count: 0
    }), transition = lock[id];
    if (!transition) {
      var time = inherit.time;
      transition = lock[id] = {
        tween: new d3_Map(),
        event: d3.dispatch("start", "end"),
        time: time,
        ease: inherit.ease,
        delay: inherit.delay,
        duration: inherit.duration
      };
      ++lock.count;
      d3.timer(function(elapsed) {
        var d = node.__data__, ease = transition.ease, event = transition.event, delay = transition.delay, duration = transition.duration, tweened = [];
        return delay <= elapsed ? start(elapsed) : d3.timer(start, delay, time), 1;
        function start(elapsed) {
          if (lock.active > id) return stop();
          lock.active = id;
          event.start.call(node, d, i);
          transition.tween.forEach(function(key, value) {
            if (value = value.call(node, d, i)) {
              tweened.push(value);
            }
          });
          if (!tick(elapsed)) d3.timer(tick, 0, time);
          return 1;
        }
        function tick(elapsed) {
          if (lock.active !== id) return stop();
          var t = (elapsed - delay) / duration, e = ease(t), n = tweened.length;
          while (n > 0) {
            tweened[--n].call(node, e);
          }
          if (t >= 1) {
            stop();
            event.end.call(node, d, i);
            return 1;
          }
        }
        function stop() {
          if (--lock.count) delete lock[id]; else delete node.__transition__;
          return 1;
        }
      }, 0, time);
      return transition;
    }
  }
  d3_transitionPrototype.select = function(selector) {
    var id = this.id, subgroups = [], subgroup, subnode, node;
    if (typeof selector !== "function") selector = d3_selection_selector(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if ((node = group[i]) && (subnode = selector.call(node, node.__data__, i))) {
          if ("__data__" in node) subnode.__data__ = node.__data__;
          d3_transitionNode(subnode, i, id, node.__transition__[id]);
          subgroup.push(subnode);
        } else {
          subgroup.push(null);
        }
      }
    }
    return d3_transition(subgroups, id);
  };
  d3_transitionPrototype.selectAll = function(selector) {
    var id = this.id, subgroups = [], subgroup, subnodes, node, subnode, transition;
    if (typeof selector !== "function") selector = d3_selection_selectorAll(selector);
    for (var j = -1, m = this.length; ++j < m; ) {
      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
        if (node = group[i]) {
          transition = node.__transition__[id];
          subnodes = selector.call(node, node.__data__, i);
          subgroups.push(subgroup = []);
          for (var k = -1, o = subnodes.length; ++k < o; ) {
            d3_transitionNode(subnode = subnodes[k], k, id, transition);
            subgroup.push(subnode);
          }
        }
      }
    }
    return d3_transition(subgroups, id);
  };
  d3_transitionPrototype.filter = function(filter) {
    var subgroups = [], subgroup, group, node;
    if (typeof filter !== "function") filter = d3_selection_filter(filter);
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        if ((node = group[i]) && filter.call(node, node.__data__, i)) {
          subgroup.push(node);
        }
      }
    }
    return d3_transition(subgroups, this.id, this.time).ease(this.ease());
  };
  d3_transitionPrototype.attr = function(nameNS, value) {
    if (arguments.length < 2) {
      for (value in nameNS) this.attr(value, nameNS[value]);
      return this;
    }
    var interpolate = d3_interpolateByName(nameNS), name = d3.ns.qualify(nameNS);
    function attrNull() {
      this.removeAttribute(name);
    }
    function attrNullNS() {
      this.removeAttributeNS(name.space, name.local);
    }
    return d3_transition_tween(this, "attr." + nameNS, value, function(b) {
      function attrString() {
        var a = this.getAttribute(name), i;
        return a !== b && (i = interpolate(a, b), function(t) {
          this.setAttribute(name, i(t));
        });
      }
      function attrStringNS() {
        var a = this.getAttributeNS(name.space, name.local), i;
        return a !== b && (i = interpolate(a, b), function(t) {
          this.setAttributeNS(name.space, name.local, i(t));
        });
      }
      return b == null ? name.local ? attrNullNS : attrNull : (b += "", name.local ? attrStringNS : attrString);
    });
  };
  d3_transitionPrototype.attrTween = function(nameNS, tween) {
    var name = d3.ns.qualify(nameNS);
    function attrTween(d, i) {
      var f = tween.call(this, d, i, this.getAttribute(name));
      return f && function(t) {
        this.setAttribute(name, f(t));
      };
    }
    function attrTweenNS(d, i) {
      var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
      return f && function(t) {
        this.setAttributeNS(name.space, name.local, f(t));
      };
    }
    return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween);
  };
  d3_transitionPrototype.style = function(name, value, priority) {
    var n = arguments.length;
    if (n < 3) {
      if (typeof name !== "string") {
        if (n < 2) value = "";
        for (priority in name) this.style(priority, name[priority], value);
        return this;
      }
      priority = "";
    }
    var interpolate = d3_interpolateByName(name);
    function styleNull() {
      this.style.removeProperty(name);
    }
    return d3_transition_tween(this, "style." + name, value, function(b) {
      function styleString() {
        var a = d3_window.getComputedStyle(this, null).getPropertyValue(name), i;
        return a !== b && (i = interpolate(a, b), function(t) {
          this.style.setProperty(name, i(t), priority);
        });
      }
      return b == null ? styleNull : (b += "", styleString);
    });
  };
  d3_transitionPrototype.styleTween = function(name, tween, priority) {
    if (arguments.length < 3) priority = "";
    return this.tween("style." + name, function(d, i) {
      var f = tween.call(this, d, i, d3_window.getComputedStyle(this, null).getPropertyValue(name));
      return f && function(t) {
        this.style.setProperty(name, f(t), priority);
      };
    });
  };
  d3_transitionPrototype.text = function(value) {
    return d3_transition_tween(this, "text", value, d3_transition_text);
  };
  function d3_transition_text(b) {
    if (b == null) b = "";
    return function() {
      this.textContent = b;
    };
  }
  d3_transitionPrototype.remove = function() {
    return this.each("end.transition", function() {
      var p;
      if (!this.__transition__ && (p = this.parentNode)) p.removeChild(this);
    });
  };
  d3_transitionPrototype.ease = function(value) {
    var id = this.id;
    if (arguments.length < 1) return this.node().__transition__[id].ease;
    if (typeof value !== "function") value = d3.ease.apply(d3, arguments);
    return d3_selection_each(this, function(node) {
      node.__transition__[id].ease = value;
    });
  };
  d3_transitionPrototype.delay = function(value) {
    var id = this.id;
    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
      node.__transition__[id].delay = value.call(node, node.__data__, i, j) | 0;
    } : (value |= 0, function(node) {
      node.__transition__[id].delay = value;
    }));
  };
  d3_transitionPrototype.duration = function(value) {
    var id = this.id;
    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
      node.__transition__[id].duration = Math.max(1, value.call(node, node.__data__, i, j) | 0);
    } : (value = Math.max(1, value | 0), function(node) {
      node.__transition__[id].duration = value;
    }));
  };
  d3_transitionPrototype.each = function(type, listener) {
    var id = this.id;
    if (arguments.length < 2) {
      var inherit = d3_transitionInherit, inheritId = d3_transitionInheritId;
      d3_transitionInheritId = id;
      d3_selection_each(this, function(node, i, j) {
        d3_transitionInherit = node.__transition__[id];
        type.call(node, node.__data__, i, j);
      });
      d3_transitionInherit = inherit;
      d3_transitionInheritId = inheritId;
    } else {
      d3_selection_each(this, function(node) {
        node.__transition__[id].event.on(type, listener);
      });
    }
    return this;
  };
  d3_transitionPrototype.transition = function() {
    var id0 = this.id, id1 = ++d3_transitionId, subgroups = [], subgroup, group, node, transition;
    for (var j = 0, m = this.length; j < m; j++) {
      subgroups.push(subgroup = []);
      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
        if (node = group[i]) {
          transition = Object.create(node.__transition__[id0]);
          transition.delay += transition.duration;
          d3_transitionNode(node, i, id1, transition);
        }
        subgroup.push(node);
      }
    }
    return d3_transition(subgroups, id1);
  };
  d3_transitionPrototype.tween = function(name, tween) {
    var id = this.id;
    if (arguments.length < 2) return this.node().__transition__[id].tween.get(name);
    return d3_selection_each(this, tween == null ? function(node) {
      node.__transition__[id].tween.remove(name);
    } : function(node) {
      node.__transition__[id].tween.set(name, tween);
    });
  };
  function d3_transition_tween(groups, name, value, tween) {
    var id = groups.id;
    return d3_selection_each(groups, typeof value === "function" ? function(node, i, j) {
      node.__transition__[id].tween.set(name, tween(value.call(node, node.__data__, i, j)));
    } : (value = tween(value), function(node) {
      node.__transition__[id].tween.set(name, value);
    }));
  }
  var d3_timer_id = 0, d3_timer_byId = {}, d3_timer_queue = null, d3_timer_interval, d3_timer_timeout;
  d3.timer = function(callback, delay, then) {
    if (arguments.length < 3) {
      if (arguments.length < 2) delay = 0; else if (!isFinite(delay)) return;
      then = Date.now();
    }
    var timer = d3_timer_byId[callback.id];
    if (timer && timer.callback === callback) {
      timer.then = then;
      timer.delay = delay;
    } else d3_timer_byId[callback.id = ++d3_timer_id] = d3_timer_queue = {
      callback: callback,
      then: then,
      delay: delay,
      next: d3_timer_queue
    };
    if (!d3_timer_interval) {
      d3_timer_timeout = clearTimeout(d3_timer_timeout);
      d3_timer_interval = 1;
      d3_timer_frame(d3_timer_step);
    }
  };
  function d3_timer_step() {
    var elapsed, now = Date.now(), t1 = d3_timer_queue;
    while (t1) {
      elapsed = now - t1.then;
      if (elapsed >= t1.delay) t1.flush = t1.callback(elapsed);
      t1 = t1.next;
    }
    var delay = d3_timer_flush() - now;
    if (delay > 24) {
      if (isFinite(delay)) {
        clearTimeout(d3_timer_timeout);
        d3_timer_timeout = setTimeout(d3_timer_step, delay);
      }
      d3_timer_interval = 0;
    } else {
      d3_timer_interval = 1;
      d3_timer_frame(d3_timer_step);
    }
  }
  d3.timer.flush = function() {
    var elapsed, now = Date.now(), t1 = d3_timer_queue;
    while (t1) {
      elapsed = now - t1.then;
      if (!t1.delay) t1.flush = t1.callback(elapsed);
      t1 = t1.next;
    }
    d3_timer_flush();
  };
  function d3_timer_flush() {
    var t0 = null, t1 = d3_timer_queue, then = Infinity;
    while (t1) {
      if (t1.flush) {
        delete d3_timer_byId[t1.callback.id];
        t1 = t0 ? t0.next = t1.next : d3_timer_queue = t1.next;
      } else {
        then = Math.min(then, t1.then + t1.delay);
        t1 = (t0 = t1).next;
      }
    }
    return then;
  }
  var d3_timer_frame = d3_window.requestAnimationFrame || d3_window.webkitRequestAnimationFrame || d3_window.mozRequestAnimationFrame || d3_window.oRequestAnimationFrame || d3_window.msRequestAnimationFrame || function(callback) {
    setTimeout(callback, 17);
  };
  d3.mouse = function(container) {
    return d3_mousePoint(container, d3_eventSource());
  };
  var d3_mouse_bug44083 = /WebKit/.test(d3_window.navigator.userAgent) ? -1 : 0;
  function d3_mousePoint(container, e) {
    var svg = container.ownerSVGElement || container;
    if (svg.createSVGPoint) {
      var point = svg.createSVGPoint();
      if (d3_mouse_bug44083 < 0 && (d3_window.scrollX || d3_window.scrollY)) {
        svg = d3.select(d3_document.body).append("svg").style("position", "absolute").style("top", 0).style("left", 0);
        var ctm = svg[0][0].getScreenCTM();
        d3_mouse_bug44083 = !(ctm.f || ctm.e);
        svg.remove();
      }
      if (d3_mouse_bug44083) {
        point.x = e.pageX;
        point.y = e.pageY;
      } else {
        point.x = e.clientX;
        point.y = e.clientY;
      }
      point = point.matrixTransform(container.getScreenCTM().inverse());
      return [ point.x, point.y ];
    }
    var rect = container.getBoundingClientRect();
    return [ e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop ];
  }
  d3.touches = function(container, touches) {
    if (arguments.length < 2) touches = d3_eventSource().touches;
    return touches ? d3_array(touches).map(function(touch) {
      var point = d3_mousePoint(container, touch);
      point.identifier = touch.identifier;
      return point;
    }) : [];
  };
  function d3_noop() {}
  d3.scale = {};
  function d3_scaleExtent(domain) {
    var start = domain[0], stop = domain[domain.length - 1];
    return start < stop ? [ start, stop ] : [ stop, start ];
  }
  function d3_scaleRange(scale) {
    return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
  }
  function d3_scale_nice(domain, nice) {
    var i0 = 0, i1 = domain.length - 1, x0 = domain[i0], x1 = domain[i1], dx;
    if (x1 < x0) {
      dx = i0, i0 = i1, i1 = dx;
      dx = x0, x0 = x1, x1 = dx;
    }
    if (nice = nice(x1 - x0)) {
      domain[i0] = nice.floor(x0);
      domain[i1] = nice.ceil(x1);
    }
    return domain;
  }
  function d3_scale_niceDefault() {
    return Math;
  }
  d3.scale.linear = function() {
    return d3_scale_linear([ 0, 1 ], [ 0, 1 ], d3.interpolate, false);
  };
  function d3_scale_linear(domain, range, interpolate, clamp) {
    var output, input;
    function rescale() {
      var linear = Math.min(domain.length, range.length) > 2 ? d3_scale_polylinear : d3_scale_bilinear, uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
      output = linear(domain, range, uninterpolate, interpolate);
      input = linear(range, domain, uninterpolate, d3.interpolate);
      return scale;
    }
    function scale(x) {
      return output(x);
    }
    scale.invert = function(y) {
      return input(y);
    };
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = x.map(Number);
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.rangeRound = function(x) {
      return scale.range(x).interpolate(d3.interpolateRound);
    };
    scale.clamp = function(x) {
      if (!arguments.length) return clamp;
      clamp = x;
      return rescale();
    };
    scale.interpolate = function(x) {
      if (!arguments.length) return interpolate;
      interpolate = x;
      return rescale();
    };
    scale.ticks = function(m) {
      return d3_scale_linearTicks(domain, m);
    };
    scale.tickFormat = function(m) {
      return d3_scale_linearTickFormat(domain, m);
    };
    scale.nice = function() {
      d3_scale_nice(domain, d3_scale_linearNice);
      return rescale();
    };
    scale.copy = function() {
      return d3_scale_linear(domain, range, interpolate, clamp);
    };
    return rescale();
  }
  function d3_scale_linearRebind(scale, linear) {
    return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
  }
  function d3_scale_linearNice(dx) {
    dx = Math.pow(10, Math.round(Math.log(dx) / Math.LN10) - 1);
    return dx && {
      floor: function(x) {
        return Math.floor(x / dx) * dx;
      },
      ceil: function(x) {
        return Math.ceil(x / dx) * dx;
      }
    };
  }
  function d3_scale_linearTickRange(domain, m) {
    var extent = d3_scaleExtent(domain), span = extent[1] - extent[0], step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)), err = m / span * step;
    if (err <= .15) step *= 10; else if (err <= .35) step *= 5; else if (err <= .75) step *= 2;
    extent[0] = Math.ceil(extent[0] / step) * step;
    extent[1] = Math.floor(extent[1] / step) * step + step * .5;
    extent[2] = step;
    return extent;
  }
  function d3_scale_linearTicks(domain, m) {
    return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
  }
  function d3_scale_linearTickFormat(domain, m) {
    return d3.format(",." + Math.max(0, -Math.floor(Math.log(d3_scale_linearTickRange(domain, m)[2]) / Math.LN10 + .01)) + "f");
  }
  function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
    var u = uninterpolate(domain[0], domain[1]), i = interpolate(range[0], range[1]);
    return function(x) {
      return i(u(x));
    };
  }
  function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
    var u = [], i = [], j = 0, k = Math.min(domain.length, range.length) - 1;
    if (domain[k] < domain[0]) {
      domain = domain.slice().reverse();
      range = range.slice().reverse();
    }
    while (++j <= k) {
      u.push(uninterpolate(domain[j - 1], domain[j]));
      i.push(interpolate(range[j - 1], range[j]));
    }
    return function(x) {
      var j = d3.bisect(domain, x, 1, k) - 1;
      return i[j](u[j](x));
    };
  }
  d3.scale.log = function() {
    return d3_scale_log(d3.scale.linear(), d3_scale_logp);
  };
  function d3_scale_log(linear, log) {
    var pow = log.pow;
    function scale(x) {
      return linear(log(x));
    }
    scale.invert = function(x) {
      return pow(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return linear.domain().map(pow);
      log = x[0] < 0 ? d3_scale_logn : d3_scale_logp;
      pow = log.pow;
      linear.domain(x.map(log));
      return scale;
    };
    scale.nice = function() {
      linear.domain(d3_scale_nice(linear.domain(), d3_scale_niceDefault));
      return scale;
    };
    scale.ticks = function() {
      var extent = d3_scaleExtent(linear.domain()), ticks = [];
      if (extent.every(isFinite)) {
        var i = Math.floor(extent[0]), j = Math.ceil(extent[1]), u = pow(extent[0]), v = pow(extent[1]);
        if (log === d3_scale_logn) {
          ticks.push(pow(i));
          for (;i++ < j; ) for (var k = 9; k > 0; k--) ticks.push(pow(i) * k);
        } else {
          for (;i < j; i++) for (var k = 1; k < 10; k++) ticks.push(pow(i) * k);
          ticks.push(pow(i));
        }
        for (i = 0; ticks[i] < u; i++) {}
        for (j = ticks.length; ticks[j - 1] > v; j--) {}
        ticks = ticks.slice(i, j);
      }
      return ticks;
    };
    scale.tickFormat = function(n, format) {
      if (arguments.length < 2) format = d3_scale_logFormat;
      if (!arguments.length) return format;
      var k = Math.max(.1, n / scale.ticks().length), f = log === d3_scale_logn ? (e = -1e-12, 
      Math.floor) : (e = 1e-12, Math.ceil), e;
      return function(d) {
        return d / pow(f(log(d) + e)) <= k ? format(d) : "";
      };
    };
    scale.copy = function() {
      return d3_scale_log(linear.copy(), log);
    };
    return d3_scale_linearRebind(scale, linear);
  }
  var d3_scale_logFormat = d3.format(".0e");
  function d3_scale_logp(x) {
    return Math.log(x < 0 ? 0 : x) / Math.LN10;
  }
  function d3_scale_logn(x) {
    return -Math.log(x > 0 ? 0 : -x) / Math.LN10;
  }
  d3_scale_logp.pow = function(x) {
    return Math.pow(10, x);
  };
  d3_scale_logn.pow = function(x) {
    return -Math.pow(10, -x);
  };
  d3.scale.pow = function() {
    return d3_scale_pow(d3.scale.linear(), 1);
  };
  function d3_scale_pow(linear, exponent) {
    var powp = d3_scale_powPow(exponent), powb = d3_scale_powPow(1 / exponent);
    function scale(x) {
      return linear(powp(x));
    }
    scale.invert = function(x) {
      return powb(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return linear.domain().map(powb);
      linear.domain(x.map(powp));
      return scale;
    };
    scale.ticks = function(m) {
      return d3_scale_linearTicks(scale.domain(), m);
    };
    scale.tickFormat = function(m) {
      return d3_scale_linearTickFormat(scale.domain(), m);
    };
    scale.nice = function() {
      return scale.domain(d3_scale_nice(scale.domain(), d3_scale_linearNice));
    };
    scale.exponent = function(x) {
      if (!arguments.length) return exponent;
      var domain = scale.domain();
      powp = d3_scale_powPow(exponent = x);
      powb = d3_scale_powPow(1 / exponent);
      return scale.domain(domain);
    };
    scale.copy = function() {
      return d3_scale_pow(linear.copy(), exponent);
    };
    return d3_scale_linearRebind(scale, linear);
  }
  function d3_scale_powPow(e) {
    return function(x) {
      return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
    };
  }
  d3.scale.sqrt = function() {
    return d3.scale.pow().exponent(.5);
  };
  d3.scale.ordinal = function() {
    return d3_scale_ordinal([], {
      t: "range",
      a: [ [] ]
    });
  };
  function d3_scale_ordinal(domain, ranger) {
    var index, range, rangeBand;
    function scale(x) {
      return range[((index.get(x) || index.set(x, domain.push(x))) - 1) % range.length];
    }
    function steps(start, step) {
      return d3.range(domain.length).map(function(i) {
        return start + step * i;
      });
    }
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = [];
      index = new d3_Map();
      var i = -1, n = x.length, xi;
      while (++i < n) if (!index.has(xi = x[i])) index.set(xi, domain.push(xi));
      return scale[ranger.t].apply(scale, ranger.a);
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      rangeBand = 0;
      ranger = {
        t: "range",
        a: arguments
      };
      return scale;
    };
    scale.rangePoints = function(x, padding) {
      if (arguments.length < 2) padding = 0;
      var start = x[0], stop = x[1], step = (stop - start) / (Math.max(1, domain.length - 1) + padding);
      range = steps(domain.length < 2 ? (start + stop) / 2 : start + step * padding / 2, step);
      rangeBand = 0;
      ranger = {
        t: "rangePoints",
        a: arguments
      };
      return scale;
    };
    scale.rangeBands = function(x, padding, outerPadding) {
      if (arguments.length < 2) padding = 0;
      if (arguments.length < 3) outerPadding = padding;
      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = (stop - start) / (domain.length - padding + 2 * outerPadding);
      range = steps(start + step * outerPadding, step);
      if (reverse) range.reverse();
      rangeBand = step * (1 - padding);
      ranger = {
        t: "rangeBands",
        a: arguments
      };
      return scale;
    };
    scale.rangeRoundBands = function(x, padding, outerPadding) {
      if (arguments.length < 2) padding = 0;
      if (arguments.length < 3) outerPadding = padding;
      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = Math.floor((stop - start) / (domain.length - padding + 2 * outerPadding)), error = stop - start - (domain.length - padding) * step;
      range = steps(start + Math.round(error / 2), step);
      if (reverse) range.reverse();
      rangeBand = Math.round(step * (1 - padding));
      ranger = {
        t: "rangeRoundBands",
        a: arguments
      };
      return scale;
    };
    scale.rangeBand = function() {
      return rangeBand;
    };
    scale.rangeExtent = function() {
      return d3_scaleExtent(ranger.a[0]);
    };
    scale.copy = function() {
      return d3_scale_ordinal(domain, ranger);
    };
    return scale.domain(domain);
  }
  d3.scale.category10 = function() {
    return d3.scale.ordinal().range(d3_category10);
  };
  d3.scale.category20 = function() {
    return d3.scale.ordinal().range(d3_category20);
  };
  d3.scale.category20b = function() {
    return d3.scale.ordinal().range(d3_category20b);
  };
  d3.scale.category20c = function() {
    return d3.scale.ordinal().range(d3_category20c);
  };
  var d3_category10 = [ "#1f77b4", "#ff7f0e", "#2ca02c", "#d62728", "#9467bd", "#8c564b", "#e377c2", "#7f7f7f", "#bcbd22", "#17becf" ];
  var d3_category20 = [ "#1f77b4", "#aec7e8", "#ff7f0e", "#ffbb78", "#2ca02c", "#98df8a", "#d62728", "#ff9896", "#9467bd", "#c5b0d5", "#8c564b", "#c49c94", "#e377c2", "#f7b6d2", "#7f7f7f", "#c7c7c7", "#bcbd22", "#dbdb8d", "#17becf", "#9edae5" ];
  var d3_category20b = [ "#393b79", "#5254a3", "#6b6ecf", "#9c9ede", "#637939", "#8ca252", "#b5cf6b", "#cedb9c", "#8c6d31", "#bd9e39", "#e7ba52", "#e7cb94", "#843c39", "#ad494a", "#d6616b", "#e7969c", "#7b4173", "#a55194", "#ce6dbd", "#de9ed6" ];
  var d3_category20c = [ "#3182bd", "#6baed6", "#9ecae1", "#c6dbef", "#e6550d", "#fd8d3c", "#fdae6b", "#fdd0a2", "#31a354", "#74c476", "#a1d99b", "#c7e9c0", "#756bb1", "#9e9ac8", "#bcbddc", "#dadaeb", "#636363", "#969696", "#bdbdbd", "#d9d9d9" ];
  d3.scale.quantile = function() {
    return d3_scale_quantile([], []);
  };
  function d3_scale_quantile(domain, range) {
    var thresholds;
    function rescale() {
      var k = 0, q = range.length;
      thresholds = [];
      while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
      return scale;
    }
    function scale(x) {
      if (isNaN(x = +x)) return NaN;
      return range[d3.bisect(thresholds, x)];
    }
    scale.domain = function(x) {
      if (!arguments.length) return domain;
      domain = x.filter(function(d) {
        return !isNaN(d);
      }).sort(d3.ascending);
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.quantiles = function() {
      return thresholds;
    };
    scale.copy = function() {
      return d3_scale_quantile(domain, range);
    };
    return rescale();
  }
  d3.scale.quantize = function() {
    return d3_scale_quantize(0, 1, [ 0, 1 ]);
  };
  function d3_scale_quantize(x0, x1, range) {
    var kx, i;
    function scale(x) {
      return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
    }
    function rescale() {
      kx = range.length / (x1 - x0);
      i = range.length - 1;
      return scale;
    }
    scale.domain = function(x) {
      if (!arguments.length) return [ x0, x1 ];
      x0 = +x[0];
      x1 = +x[x.length - 1];
      return rescale();
    };
    scale.range = function(x) {
      if (!arguments.length) return range;
      range = x;
      return rescale();
    };
    scale.copy = function() {
      return d3_scale_quantize(x0, x1, range);
    };
    return rescale();
  }
  d3.scale.threshold = function() {
    return d3_scale_threshold([ .5 ], [ 0, 1 ]);
  };
  function d3_scale_threshold(domain, range) {
    function scale(x) {
      return range[d3.bisect(domain, x)];
    }
    scale.domain = function(_) {
      if (!arguments.length) return domain;
      domain = _;
      return scale;
    };
    scale.range = function(_) {
      if (!arguments.length) return range;
      range = _;
      return scale;
    };
    scale.copy = function() {
      return d3_scale_threshold(domain, range);
    };
    return scale;
  }
  d3.scale.identity = function() {
    return d3_scale_identity([ 0, 1 ]);
  };
  function d3_scale_identity(domain) {
    function identity(x) {
      return +x;
    }
    identity.invert = identity;
    identity.domain = identity.range = function(x) {
      if (!arguments.length) return domain;
      domain = x.map(identity);
      return identity;
    };
    identity.ticks = function(m) {
      return d3_scale_linearTicks(domain, m);
    };
    identity.tickFormat = function(m) {
      return d3_scale_linearTickFormat(domain, m);
    };
    identity.copy = function() {
      return d3_scale_identity(domain);
    };
    return identity;
  }
  d3.svg = {};
  d3.svg.arc = function() {
    var innerRadius = d3_svg_arcInnerRadius, outerRadius = d3_svg_arcOuterRadius, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle;
    function arc() {
      var r0 = innerRadius.apply(this, arguments), r1 = outerRadius.apply(this, arguments), a0 = startAngle.apply(this, arguments) + d3_svg_arcOffset, a1 = endAngle.apply(this, arguments) + d3_svg_arcOffset, da = (a1 < a0 && (da = a0, 
      a0 = a1, a1 = da), a1 - a0), df = da < π ? "0" : "1", c0 = Math.cos(a0), s0 = Math.sin(a0), c1 = Math.cos(a1), s1 = Math.sin(a1);
      return da >= d3_svg_arcMax ? r0 ? "M0," + r1 + "A" + r1 + "," + r1 + " 0 1,1 0," + -r1 + "A" + r1 + "," + r1 + " 0 1,1 0," + r1 + "M0," + r0 + "A" + r0 + "," + r0 + " 0 1,0 0," + -r0 + "A" + r0 + "," + r0 + " 0 1,0 0," + r0 + "Z" : "M0," + r1 + "A" + r1 + "," + r1 + " 0 1,1 0," + -r1 + "A" + r1 + "," + r1 + " 0 1,1 0," + r1 + "Z" : r0 ? "M" + r1 * c0 + "," + r1 * s0 + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1 + "L" + r0 * c1 + "," + r0 * s1 + "A" + r0 + "," + r0 + " 0 " + df + ",0 " + r0 * c0 + "," + r0 * s0 + "Z" : "M" + r1 * c0 + "," + r1 * s0 + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1 + "L0,0" + "Z";
    }
    arc.innerRadius = function(v) {
      if (!arguments.length) return innerRadius;
      innerRadius = d3_functor(v);
      return arc;
    };
    arc.outerRadius = function(v) {
      if (!arguments.length) return outerRadius;
      outerRadius = d3_functor(v);
      return arc;
    };
    arc.startAngle = function(v) {
      if (!arguments.length) return startAngle;
      startAngle = d3_functor(v);
      return arc;
    };
    arc.endAngle = function(v) {
      if (!arguments.length) return endAngle;
      endAngle = d3_functor(v);
      return arc;
    };
    arc.centroid = function() {
      var r = (innerRadius.apply(this, arguments) + outerRadius.apply(this, arguments)) / 2, a = (startAngle.apply(this, arguments) + endAngle.apply(this, arguments)) / 2 + d3_svg_arcOffset;
      return [ Math.cos(a) * r, Math.sin(a) * r ];
    };
    return arc;
  };
  var d3_svg_arcOffset = -π / 2, d3_svg_arcMax = 2 * π - 1e-6;
  function d3_svg_arcInnerRadius(d) {
    return d.innerRadius;
  }
  function d3_svg_arcOuterRadius(d) {
    return d.outerRadius;
  }
  function d3_svg_arcStartAngle(d) {
    return d.startAngle;
  }
  function d3_svg_arcEndAngle(d) {
    return d.endAngle;
  }
  function d3_svg_line(projection) {
    var x = d3_svg_lineX, y = d3_svg_lineY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, tension = .7;
    function line(data) {
      var segments = [], points = [], i = -1, n = data.length, d, fx = d3_functor(x), fy = d3_functor(y);
      function segment() {
        segments.push("M", interpolate(projection(points), tension));
      }
      while (++i < n) {
        if (defined.call(this, d = data[i], i)) {
          points.push([ +fx.call(this, d, i), +fy.call(this, d, i) ]);
        } else if (points.length) {
          segment();
          points = [];
        }
      }
      if (points.length) segment();
      return segments.length ? segments.join("") : null;
    }
    line.x = function(_) {
      if (!arguments.length) return x;
      x = _;
      return line;
    };
    line.y = function(_) {
      if (!arguments.length) return y;
      y = _;
      return line;
    };
    line.defined = function(_) {
      if (!arguments.length) return defined;
      defined = _;
      return line;
    };
    line.interpolate = function(_) {
      if (!arguments.length) return interpolateKey;
      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
      return line;
    };
    line.tension = function(_) {
      if (!arguments.length) return tension;
      tension = _;
      return line;
    };
    return line;
  }
  d3.svg.line = function() {
    return d3_svg_line(d3_identity);
  };
  function d3_svg_lineX(d) {
    return d[0];
  }
  function d3_svg_lineY(d) {
    return d[1];
  }
  var d3_svg_lineInterpolators = d3.map({
    linear: d3_svg_lineLinear,
    "linear-closed": d3_svg_lineLinearClosed,
    "step-before": d3_svg_lineStepBefore,
    "step-after": d3_svg_lineStepAfter,
    basis: d3_svg_lineBasis,
    "basis-open": d3_svg_lineBasisOpen,
    "basis-closed": d3_svg_lineBasisClosed,
    bundle: d3_svg_lineBundle,
    cardinal: d3_svg_lineCardinal,
    "cardinal-open": d3_svg_lineCardinalOpen,
    "cardinal-closed": d3_svg_lineCardinalClosed,
    monotone: d3_svg_lineMonotone
  });
  d3_svg_lineInterpolators.forEach(function(key, value) {
    value.key = key;
    value.closed = /-closed$/.test(key);
  });
  function d3_svg_lineLinear(points) {
    return points.join("L");
  }
  function d3_svg_lineLinearClosed(points) {
    return d3_svg_lineLinear(points) + "Z";
  }
  function d3_svg_lineStepBefore(points) {
    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
    while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
    return path.join("");
  }
  function d3_svg_lineStepAfter(points) {
    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
    while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
    return path.join("");
  }
  function d3_svg_lineCardinalOpen(points, tension) {
    return points.length < 4 ? d3_svg_lineLinear(points) : points[1] + d3_svg_lineHermite(points.slice(1, points.length - 1), d3_svg_lineCardinalTangents(points, tension));
  }
  function d3_svg_lineCardinalClosed(points, tension) {
    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite((points.push(points[0]), 
    points), d3_svg_lineCardinalTangents([ points[points.length - 2] ].concat(points, [ points[1] ]), tension));
  }
  function d3_svg_lineCardinal(points, tension) {
    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineCardinalTangents(points, tension));
  }
  function d3_svg_lineHermite(points, tangents) {
    if (tangents.length < 1 || points.length != tangents.length && points.length != tangents.length + 2) {
      return d3_svg_lineLinear(points);
    }
    var quad = points.length != tangents.length, path = "", p0 = points[0], p = points[1], t0 = tangents[0], t = t0, pi = 1;
    if (quad) {
      path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3) + "," + p[0] + "," + p[1];
      p0 = points[1];
      pi = 2;
    }
    if (tangents.length > 1) {
      t = tangents[1];
      p = points[pi];
      pi++;
      path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1]) + "," + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
      for (var i = 2; i < tangents.length; i++, pi++) {
        p = points[pi];
        t = tangents[i];
        path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
      }
    }
    if (quad) {
      var lp = points[pi];
      path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3) + "," + lp[0] + "," + lp[1];
    }
    return path;
  }
  function d3_svg_lineCardinalTangents(points, tension) {
    var tangents = [], a = (1 - tension) / 2, p0, p1 = points[0], p2 = points[1], i = 1, n = points.length;
    while (++i < n) {
      p0 = p1;
      p1 = p2;
      p2 = points[i];
      tangents.push([ a * (p2[0] - p0[0]), a * (p2[1] - p0[1]) ]);
    }
    return tangents;
  }
  function d3_svg_lineBasis(points) {
    if (points.length < 3) return d3_svg_lineLinear(points);
    var i = 1, n = points.length, pi = points[0], x0 = pi[0], y0 = pi[1], px = [ x0, x0, x0, (pi = points[1])[0] ], py = [ y0, y0, y0, pi[1] ], path = [ x0, ",", y0 ];
    d3_svg_lineBasisBezier(path, px, py);
    while (++i < n) {
      pi = points[i];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    i = -1;
    while (++i < 2) {
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    return path.join("");
  }
  function d3_svg_lineBasisOpen(points) {
    if (points.length < 4) return d3_svg_lineLinear(points);
    var path = [], i = -1, n = points.length, pi, px = [ 0 ], py = [ 0 ];
    while (++i < 3) {
      pi = points[i];
      px.push(pi[0]);
      py.push(pi[1]);
    }
    path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px) + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
    --i;
    while (++i < n) {
      pi = points[i];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    return path.join("");
  }
  function d3_svg_lineBasisClosed(points) {
    var path, i = -1, n = points.length, m = n + 4, pi, px = [], py = [];
    while (++i < 4) {
      pi = points[i % n];
      px.push(pi[0]);
      py.push(pi[1]);
    }
    path = [ d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
    --i;
    while (++i < m) {
      pi = points[i % n];
      px.shift();
      px.push(pi[0]);
      py.shift();
      py.push(pi[1]);
      d3_svg_lineBasisBezier(path, px, py);
    }
    return path.join("");
  }
  function d3_svg_lineBundle(points, tension) {
    var n = points.length - 1;
    if (n) {
      var x0 = points[0][0], y0 = points[0][1], dx = points[n][0] - x0, dy = points[n][1] - y0, i = -1, p, t;
      while (++i <= n) {
        p = points[i];
        t = i / n;
        p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
        p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
      }
    }
    return d3_svg_lineBasis(points);
  }
  function d3_svg_lineDot4(a, b) {
    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
  }
  var d3_svg_lineBasisBezier1 = [ 0, 2 / 3, 1 / 3, 0 ], d3_svg_lineBasisBezier2 = [ 0, 1 / 3, 2 / 3, 0 ], d3_svg_lineBasisBezier3 = [ 0, 1 / 6, 2 / 3, 1 / 6 ];
  function d3_svg_lineBasisBezier(path, x, y) {
    path.push("C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
  }
  function d3_svg_lineSlope(p0, p1) {
    return (p1[1] - p0[1]) / (p1[0] - p0[0]);
  }
  function d3_svg_lineFiniteDifferences(points) {
    var i = 0, j = points.length - 1, m = [], p0 = points[0], p1 = points[1], d = m[0] = d3_svg_lineSlope(p0, p1);
    while (++i < j) {
      m[i] = (d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]))) / 2;
    }
    m[i] = d;
    return m;
  }
  function d3_svg_lineMonotoneTangents(points) {
    var tangents = [], d, a, b, s, m = d3_svg_lineFiniteDifferences(points), i = -1, j = points.length - 1;
    while (++i < j) {
      d = d3_svg_lineSlope(points[i], points[i + 1]);
      if (Math.abs(d) < 1e-6) {
        m[i] = m[i + 1] = 0;
      } else {
        a = m[i] / d;
        b = m[i + 1] / d;
        s = a * a + b * b;
        if (s > 9) {
          s = d * 3 / Math.sqrt(s);
          m[i] = s * a;
          m[i + 1] = s * b;
        }
      }
    }
    i = -1;
    while (++i <= j) {
      s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0]) / (6 * (1 + m[i] * m[i]));
      tangents.push([ s || 0, m[i] * s || 0 ]);
    }
    return tangents;
  }
  function d3_svg_lineMonotone(points) {
    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
  }
  d3.svg.line.radial = function() {
    var line = d3_svg_line(d3_svg_lineRadial);
    line.radius = line.x, delete line.x;
    line.angle = line.y, delete line.y;
    return line;
  };
  function d3_svg_lineRadial(points) {
    var point, i = -1, n = points.length, r, a;
    while (++i < n) {
      point = points[i];
      r = point[0];
      a = point[1] + d3_svg_arcOffset;
      point[0] = r * Math.cos(a);
      point[1] = r * Math.sin(a);
    }
    return points;
  }
  function d3_svg_area(projection) {
    var x0 = d3_svg_lineX, x1 = d3_svg_lineX, y0 = 0, y1 = d3_svg_lineY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, interpolateReverse = interpolate, L = "L", tension = .7;
    function area(data) {
      var segments = [], points0 = [], points1 = [], i = -1, n = data.length, d, fx0 = d3_functor(x0), fy0 = d3_functor(y0), fx1 = x0 === x1 ? function() {
        return x;
      } : d3_functor(x1), fy1 = y0 === y1 ? function() {
        return y;
      } : d3_functor(y1), x, y;
      function segment() {
        segments.push("M", interpolate(projection(points1), tension), L, interpolateReverse(projection(points0.reverse()), tension), "Z");
      }
      while (++i < n) {
        if (defined.call(this, d = data[i], i)) {
          points0.push([ x = +fx0.call(this, d, i), y = +fy0.call(this, d, i) ]);
          points1.push([ +fx1.call(this, d, i), +fy1.call(this, d, i) ]);
        } else if (points0.length) {
          segment();
          points0 = [];
          points1 = [];
        }
      }
      if (points0.length) segment();
      return segments.length ? segments.join("") : null;
    }
    area.x = function(_) {
      if (!arguments.length) return x1;
      x0 = x1 = _;
      return area;
    };
    area.x0 = function(_) {
      if (!arguments.length) return x0;
      x0 = _;
      return area;
    };
    area.x1 = function(_) {
      if (!arguments.length) return x1;
      x1 = _;
      return area;
    };
    area.y = function(_) {
      if (!arguments.length) return y1;
      y0 = y1 = _;
      return area;
    };
    area.y0 = function(_) {
      if (!arguments.length) return y0;
      y0 = _;
      return area;
    };
    area.y1 = function(_) {
      if (!arguments.length) return y1;
      y1 = _;
      return area;
    };
    area.defined = function(_) {
      if (!arguments.length) return defined;
      defined = _;
      return area;
    };
    area.interpolate = function(_) {
      if (!arguments.length) return interpolateKey;
      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
      interpolateReverse = interpolate.reverse || interpolate;
      L = interpolate.closed ? "M" : "L";
      return area;
    };
    area.tension = function(_) {
      if (!arguments.length) return tension;
      tension = _;
      return area;
    };
    return area;
  }
  d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
  d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
  d3.svg.area = function() {
    return d3_svg_area(d3_identity);
  };
  d3.svg.area.radial = function() {
    var area = d3_svg_area(d3_svg_lineRadial);
    area.radius = area.x, delete area.x;
    area.innerRadius = area.x0, delete area.x0;
    area.outerRadius = area.x1, delete area.x1;
    area.angle = area.y, delete area.y;
    area.startAngle = area.y0, delete area.y0;
    area.endAngle = area.y1, delete area.y1;
    return area;
  };
  d3.svg.chord = function() {
    var source = d3_source, target = d3_target, radius = d3_svg_chordRadius, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle;
    function chord(d, i) {
      var s = subgroup(this, source, d, i), t = subgroup(this, target, d, i);
      return "M" + s.p0 + arc(s.r, s.p1, s.a1 - s.a0) + (equals(s, t) ? curve(s.r, s.p1, s.r, s.p0) : curve(s.r, s.p1, t.r, t.p0) + arc(t.r, t.p1, t.a1 - t.a0) + curve(t.r, t.p1, s.r, s.p0)) + "Z";
    }
    function subgroup(self, f, d, i) {
      var subgroup = f.call(self, d, i), r = radius.call(self, subgroup, i), a0 = startAngle.call(self, subgroup, i) + d3_svg_arcOffset, a1 = endAngle.call(self, subgroup, i) + d3_svg_arcOffset;
      return {
        r: r,
        a0: a0,
        a1: a1,
        p0: [ r * Math.cos(a0), r * Math.sin(a0) ],
        p1: [ r * Math.cos(a1), r * Math.sin(a1) ]
      };
    }
    function equals(a, b) {
      return a.a0 == b.a0 && a.a1 == b.a1;
    }
    function arc(r, p, a) {
      return "A" + r + "," + r + " 0 " + +(a > π) + ",1 " + p;
    }
    function curve(r0, p0, r1, p1) {
      return "Q 0,0 " + p1;
    }
    chord.radius = function(v) {
      if (!arguments.length) return radius;
      radius = d3_functor(v);
      return chord;
    };
    chord.source = function(v) {
      if (!arguments.length) return source;
      source = d3_functor(v);
      return chord;
    };
    chord.target = function(v) {
      if (!arguments.length) return target;
      target = d3_functor(v);
      return chord;
    };
    chord.startAngle = function(v) {
      if (!arguments.length) return startAngle;
      startAngle = d3_functor(v);
      return chord;
    };
    chord.endAngle = function(v) {
      if (!arguments.length) return endAngle;
      endAngle = d3_functor(v);
      return chord;
    };
    return chord;
  };
  function d3_svg_chordRadius(d) {
    return d.radius;
  }
  d3.svg.diagonal = function() {
    var source = d3_source, target = d3_target, projection = d3_svg_diagonalProjection;
    function diagonal(d, i) {
      var p0 = source.call(this, d, i), p3 = target.call(this, d, i), m = (p0.y + p3.y) / 2, p = [ p0, {
        x: p0.x,
        y: m
      }, {
        x: p3.x,
        y: m
      }, p3 ];
      p = p.map(projection);
      return "M" + p[0] + "C" + p[1] + " " + p[2] + " " + p[3];
    }
    diagonal.source = function(x) {
      if (!arguments.length) return source;
      source = d3_functor(x);
      return diagonal;
    };
    diagonal.target = function(x) {
      if (!arguments.length) return target;
      target = d3_functor(x);
      return diagonal;
    };
    diagonal.projection = function(x) {
      if (!arguments.length) return projection;
      projection = x;
      return diagonal;
    };
    return diagonal;
  };
  function d3_svg_diagonalProjection(d) {
    return [ d.x, d.y ];
  }
  d3.svg.diagonal.radial = function() {
    var diagonal = d3.svg.diagonal(), projection = d3_svg_diagonalProjection, projection_ = diagonal.projection;
    diagonal.projection = function(x) {
      return arguments.length ? projection_(d3_svg_diagonalRadialProjection(projection = x)) : projection;
    };
    return diagonal;
  };
  function d3_svg_diagonalRadialProjection(projection) {
    return function() {
      var d = projection.apply(this, arguments), r = d[0], a = d[1] + d3_svg_arcOffset;
      return [ r * Math.cos(a), r * Math.sin(a) ];
    };
  }
  d3.svg.symbol = function() {
    var type = d3_svg_symbolType, size = d3_svg_symbolSize;
    function symbol(d, i) {
      return (d3_svg_symbols.get(type.call(this, d, i)) || d3_svg_symbolCircle)(size.call(this, d, i));
    }
    symbol.type = function(x) {
      if (!arguments.length) return type;
      type = d3_functor(x);
      return symbol;
    };
    symbol.size = function(x) {
      if (!arguments.length) return size;
      size = d3_functor(x);
      return symbol;
    };
    return symbol;
  };
  function d3_svg_symbolSize() {
    return 64;
  }
  function d3_svg_symbolType() {
    return "circle";
  }
  function d3_svg_symbolCircle(size) {
    var r = Math.sqrt(size / π);
    return "M0," + r + "A" + r + "," + r + " 0 1,1 0," + -r + "A" + r + "," + r + " 0 1,1 0," + r + "Z";
  }
  var d3_svg_symbols = d3.map({
    circle: d3_svg_symbolCircle,
    cross: function(size) {
      var r = Math.sqrt(size / 5) / 2;
      return "M" + -3 * r + "," + -r + "H" + -r + "V" + -3 * r + "H" + r + "V" + -r + "H" + 3 * r + "V" + r + "H" + r + "V" + 3 * r + "H" + -r + "V" + r + "H" + -3 * r + "Z";
    },
    diamond: function(size) {
      var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)), rx = ry * d3_svg_symbolTan30;
      return "M0," + -ry + "L" + rx + ",0" + " 0," + ry + " " + -rx + ",0" + "Z";
    },
    square: function(size) {
      var r = Math.sqrt(size) / 2;
      return "M" + -r + "," + -r + "L" + r + "," + -r + " " + r + "," + r + " " + -r + "," + r + "Z";
    },
    "triangle-down": function(size) {
      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
      return "M0," + ry + "L" + rx + "," + -ry + " " + -rx + "," + -ry + "Z";
    },
    "triangle-up": function(size) {
      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
      return "M0," + -ry + "L" + rx + "," + ry + " " + -rx + "," + ry + "Z";
    }
  });
  d3.svg.symbolTypes = d3_svg_symbols.keys();
  var d3_svg_symbolSqrt3 = Math.sqrt(3), d3_svg_symbolTan30 = Math.tan(30 * d3_radians);
  d3.svg.axis = function() {
    var scale = d3.scale.linear(), orient = d3_svg_axisDefaultOrient, tickMajorSize = 6, tickMinorSize = 6, tickEndSize = 6, tickPadding = 3, tickArguments_ = [ 10 ], tickValues = null, tickFormat_, tickSubdivide = 0;
    function axis(g) {
      g.each(function() {
        var g = d3.select(this);
        var ticks = tickValues == null ? scale.ticks ? scale.ticks.apply(scale, tickArguments_) : scale.domain() : tickValues, tickFormat = tickFormat_ == null ? scale.tickFormat ? scale.tickFormat.apply(scale, tickArguments_) : String : tickFormat_;
        var subticks = d3_svg_axisSubdivide(scale, ticks, tickSubdivide), subtick = g.selectAll(".tick.minor").data(subticks, String), subtickEnter = subtick.enter().insert("line", ".tick").attr("class", "tick minor").style("opacity", 1e-6), subtickExit = d3.transition(subtick.exit()).style("opacity", 1e-6).remove(), subtickUpdate = d3.transition(subtick).style("opacity", 1);
        var tick = g.selectAll(".tick.major").data(ticks, String), tickEnter = tick.enter().insert("g", "path").attr("class", "tick major").style("opacity", 1e-6), tickExit = d3.transition(tick.exit()).style("opacity", 1e-6).remove(), tickUpdate = d3.transition(tick).style("opacity", 1), tickTransform;
        var range = d3_scaleRange(scale), path = g.selectAll(".domain").data([ 0 ]), pathUpdate = (path.enter().append("path").attr("class", "domain"), 
        d3.transition(path));
        var scale1 = scale.copy(), scale0 = this.__chart__ || scale1;
        this.__chart__ = scale1;
        tickEnter.append("line");
        tickEnter.append("text");
        var lineEnter = tickEnter.select("line"), lineUpdate = tickUpdate.select("line"), text = tick.select("text").text(tickFormat), textEnter = tickEnter.select("text"), textUpdate = tickUpdate.select("text");
        switch (orient) {
         case "bottom":
          {
            tickTransform = d3_svg_axisX;
            subtickEnter.attr("y2", tickMinorSize);
            subtickUpdate.attr("x2", 0).attr("y2", tickMinorSize);
            lineEnter.attr("y2", tickMajorSize);
            textEnter.attr("y", Math.max(tickMajorSize, 0) + tickPadding);
            lineUpdate.attr("x2", 0).attr("y2", tickMajorSize);
            textUpdate.attr("x", 0).attr("y", Math.max(tickMajorSize, 0) + tickPadding);
            text.attr("dy", ".71em").style("text-anchor", "middle");
            pathUpdate.attr("d", "M" + range[0] + "," + tickEndSize + "V0H" + range[1] + "V" + tickEndSize);
            break;
          }

         case "top":
          {
            tickTransform = d3_svg_axisX;
            subtickEnter.attr("y2", -tickMinorSize);
            subtickUpdate.attr("x2", 0).attr("y2", -tickMinorSize);
            lineEnter.attr("y2", -tickMajorSize);
            textEnter.attr("y", -(Math.max(tickMajorSize, 0) + tickPadding));
            lineUpdate.attr("x2", 0).attr("y2", -tickMajorSize);
            textUpdate.attr("x", 0).attr("y", -(Math.max(tickMajorSize, 0) + tickPadding));
            text.attr("dy", "0em").style("text-anchor", "middle");
            pathUpdate.attr("d", "M" + range[0] + "," + -tickEndSize + "V0H" + range[1] + "V" + -tickEndSize);
            break;
          }

         case "left":
          {
            tickTransform = d3_svg_axisY;
            subtickEnter.attr("x2", -tickMinorSize);
            subtickUpdate.attr("x2", -tickMinorSize).attr("y2", 0);
            lineEnter.attr("x2", -tickMajorSize);
            textEnter.attr("x", -(Math.max(tickMajorSize, 0) + tickPadding));
            lineUpdate.attr("x2", -tickMajorSize).attr("y2", 0);
            textUpdate.attr("x", -(Math.max(tickMajorSize, 0) + tickPadding)).attr("y", 0);
            text.attr("dy", ".32em").style("text-anchor", "end");
            pathUpdate.attr("d", "M" + -tickEndSize + "," + range[0] + "H0V" + range[1] + "H" + -tickEndSize);
            break;
          }

         case "right":
          {
            tickTransform = d3_svg_axisY;
            subtickEnter.attr("x2", tickMinorSize);
            subtickUpdate.attr("x2", tickMinorSize).attr("y2", 0);
            lineEnter.attr("x2", tickMajorSize);
            textEnter.attr("x", Math.max(tickMajorSize, 0) + tickPadding);
            lineUpdate.attr("x2", tickMajorSize).attr("y2", 0);
            textUpdate.attr("x", Math.max(tickMajorSize, 0) + tickPadding).attr("y", 0);
            text.attr("dy", ".32em").style("text-anchor", "start");
            pathUpdate.attr("d", "M" + tickEndSize + "," + range[0] + "H0V" + range[1] + "H" + tickEndSize);
            break;
          }
        }
        if (scale.ticks) {
          tickEnter.call(tickTransform, scale0);
          tickUpdate.call(tickTransform, scale1);
          tickExit.call(tickTransform, scale1);
          subtickEnter.call(tickTransform, scale0);
          subtickUpdate.call(tickTransform, scale1);
          subtickExit.call(tickTransform, scale1);
        } else {
          var dx = scale1.rangeBand() / 2, x = function(d) {
            return scale1(d) + dx;
          };
          tickEnter.call(tickTransform, x);
          tickUpdate.call(tickTransform, x);
        }
      });
    }
    axis.scale = function(x) {
      if (!arguments.length) return scale;
      scale = x;
      return axis;
    };
    axis.orient = function(x) {
      if (!arguments.length) return orient;
      orient = x in d3_svg_axisOrients ? x + "" : d3_svg_axisDefaultOrient;
      return axis;
    };
    axis.ticks = function() {
      if (!arguments.length) return tickArguments_;
      tickArguments_ = arguments;
      return axis;
    };
    axis.tickValues = function(x) {
      if (!arguments.length) return tickValues;
      tickValues = x;
      return axis;
    };
    axis.tickFormat = function(x) {
      if (!arguments.length) return tickFormat_;
      tickFormat_ = x;
      return axis;
    };
    axis.tickSize = function(x, y) {
      if (!arguments.length) return tickMajorSize;
      var n = arguments.length - 1;
      tickMajorSize = +x;
      tickMinorSize = n > 1 ? +y : tickMajorSize;
      tickEndSize = n > 0 ? +arguments[n] : tickMajorSize;
      return axis;
    };
    axis.tickPadding = function(x) {
      if (!arguments.length) return tickPadding;
      tickPadding = +x;
      return axis;
    };
    axis.tickSubdivide = function(x) {
      if (!arguments.length) return tickSubdivide;
      tickSubdivide = +x;
      return axis;
    };
    return axis;
  };
  var d3_svg_axisDefaultOrient = "bottom", d3_svg_axisOrients = {
    top: 1,
    right: 1,
    bottom: 1,
    left: 1
  };
  function d3_svg_axisX(selection, x) {
    selection.attr("transform", function(d) {
      return "translate(" + x(d) + ",0)";
    });
  }
  function d3_svg_axisY(selection, y) {
    selection.attr("transform", function(d) {
      return "translate(0," + y(d) + ")";
    });
  }
  function d3_svg_axisSubdivide(scale, ticks, m) {
    subticks = [];
    if (m && ticks.length > 1) {
      var extent = d3_scaleExtent(scale.domain()), subticks, i = -1, n = ticks.length, d = (ticks[1] - ticks[0]) / ++m, j, v;
      while (++i < n) {
        for (j = m; --j > 0; ) {
          if ((v = +ticks[i] - j * d) >= extent[0]) {
            subticks.push(v);
          }
        }
      }
      for (--i, j = 0; ++j < m && (v = +ticks[i] + j * d) < extent[1]; ) {
        subticks.push(v);
      }
    }
    return subticks;
  }
  d3.svg.brush = function() {
    var event = d3_eventDispatch(brush, "brushstart", "brush", "brushend"), x = null, y = null, resizes = d3_svg_brushResizes[0], extent = [ [ 0, 0 ], [ 0, 0 ] ], extentDomain;
    function brush(g) {
      g.each(function() {
        var g = d3.select(this), bg = g.selectAll(".background").data([ 0 ]), fg = g.selectAll(".extent").data([ 0 ]), tz = g.selectAll(".resize").data(resizes, String), e;
        g.style("pointer-events", "all").on("mousedown.brush", brushstart).on("touchstart.brush", brushstart);
        bg.enter().append("rect").attr("class", "background").style("visibility", "hidden").style("cursor", "crosshair");
        fg.enter().append("rect").attr("class", "extent").style("cursor", "move");
        tz.enter().append("g").attr("class", function(d) {
          return "resize " + d;
        }).style("cursor", function(d) {
          return d3_svg_brushCursor[d];
        }).append("rect").attr("x", function(d) {
          return /[ew]$/.test(d) ? -3 : null;
        }).attr("y", function(d) {
          return /^[ns]/.test(d) ? -3 : null;
        }).attr("width", 6).attr("height", 6).style("visibility", "hidden");
        tz.style("display", brush.empty() ? "none" : null);
        tz.exit().remove();
        if (x) {
          e = d3_scaleRange(x);
          bg.attr("x", e[0]).attr("width", e[1] - e[0]);
          redrawX(g);
        }
        if (y) {
          e = d3_scaleRange(y);
          bg.attr("y", e[0]).attr("height", e[1] - e[0]);
          redrawY(g);
        }
        redraw(g);
      });
    }
    function redraw(g) {
      g.selectAll(".resize").attr("transform", function(d) {
        return "translate(" + extent[+/e$/.test(d)][0] + "," + extent[+/^s/.test(d)][1] + ")";
      });
    }
    function redrawX(g) {
      g.select(".extent").attr("x", extent[0][0]);
      g.selectAll(".extent,.n>rect,.s>rect").attr("width", extent[1][0] - extent[0][0]);
    }
    function redrawY(g) {
      g.select(".extent").attr("y", extent[0][1]);
      g.selectAll(".extent,.e>rect,.w>rect").attr("height", extent[1][1] - extent[0][1]);
    }
    function brushstart() {
      var target = this, eventTarget = d3.select(d3.event.target), event_ = event.of(target, arguments), g = d3.select(target), resizing = eventTarget.datum(), resizingX = !/^(n|s)$/.test(resizing) && x, resizingY = !/^(e|w)$/.test(resizing) && y, dragging = eventTarget.classed("extent"), center, origin = mouse(), offset;
      var w = d3.select(d3_window).on("mousemove.brush", brushmove).on("mouseup.brush", brushend).on("touchmove.brush", brushmove).on("touchend.brush", brushend).on("keydown.brush", keydown).on("keyup.brush", keyup);
      if (dragging) {
        origin[0] = extent[0][0] - origin[0];
        origin[1] = extent[0][1] - origin[1];
      } else if (resizing) {
        var ex = +/w$/.test(resizing), ey = +/^n/.test(resizing);
        offset = [ extent[1 - ex][0] - origin[0], extent[1 - ey][1] - origin[1] ];
        origin[0] = extent[ex][0];
        origin[1] = extent[ey][1];
      } else if (d3.event.altKey) center = origin.slice();
      g.style("pointer-events", "none").selectAll(".resize").style("display", null);
      d3.select("body").style("cursor", eventTarget.style("cursor"));
      event_({
        type: "brushstart"
      });
      brushmove();
      d3_eventCancel();
      function mouse() {
        var touches = d3.event.changedTouches;
        return touches ? d3.touches(target, touches)[0] : d3.mouse(target);
      }
      function keydown() {
        if (d3.event.keyCode == 32) {
          if (!dragging) {
            center = null;
            origin[0] -= extent[1][0];
            origin[1] -= extent[1][1];
            dragging = 2;
          }
          d3_eventCancel();
        }
      }
      function keyup() {
        if (d3.event.keyCode == 32 && dragging == 2) {
          origin[0] += extent[1][0];
          origin[1] += extent[1][1];
          dragging = 0;
          d3_eventCancel();
        }
      }
      function brushmove() {
        var point = mouse(), moved = false;
        if (offset) {
          point[0] += offset[0];
          point[1] += offset[1];
        }
        if (!dragging) {
          if (d3.event.altKey) {
            if (!center) center = [ (extent[0][0] + extent[1][0]) / 2, (extent[0][1] + extent[1][1]) / 2 ];
            origin[0] = extent[+(point[0] < center[0])][0];
            origin[1] = extent[+(point[1] < center[1])][1];
          } else center = null;
        }
        if (resizingX && move1(point, x, 0)) {
          redrawX(g);
          moved = true;
        }
        if (resizingY && move1(point, y, 1)) {
          redrawY(g);
          moved = true;
        }
        if (moved) {
          redraw(g);
          event_({
            type: "brush",
            mode: dragging ? "move" : "resize"
          });
        }
      }
      function move1(point, scale, i) {
        var range = d3_scaleRange(scale), r0 = range[0], r1 = range[1], position = origin[i], size = extent[1][i] - extent[0][i], min, max;
        if (dragging) {
          r0 -= position;
          r1 -= size + position;
        }
        min = Math.max(r0, Math.min(r1, point[i]));
        if (dragging) {
          max = (min += position) + size;
        } else {
          if (center) position = Math.max(r0, Math.min(r1, 2 * center[i] - min));
          if (position < min) {
            max = min;
            min = position;
          } else {
            max = position;
          }
        }
        if (extent[0][i] !== min || extent[1][i] !== max) {
          extentDomain = null;
          extent[0][i] = min;
          extent[1][i] = max;
          return true;
        }
      }
      function brushend() {
        brushmove();
        g.style("pointer-events", "all").selectAll(".resize").style("display", brush.empty() ? "none" : null);
        d3.select("body").style("cursor", null);
        w.on("mousemove.brush", null).on("mouseup.brush", null).on("touchmove.brush", null).on("touchend.brush", null).on("keydown.brush", null).on("keyup.brush", null);
        event_({
          type: "brushend"
        });
        d3_eventCancel();
      }
    }
    brush.x = function(z) {
      if (!arguments.length) return x;
      x = z;
      resizes = d3_svg_brushResizes[!x << 1 | !y];
      return brush;
    };
    brush.y = function(z) {
      if (!arguments.length) return y;
      y = z;
      resizes = d3_svg_brushResizes[!x << 1 | !y];
      return brush;
    };
    brush.extent = function(z) {
      var x0, x1, y0, y1, t;
      if (!arguments.length) {
        z = extentDomain || extent;
        if (x) {
          x0 = z[0][0], x1 = z[1][0];
          if (!extentDomain) {
            x0 = extent[0][0], x1 = extent[1][0];
            if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
            if (x1 < x0) t = x0, x0 = x1, x1 = t;
          }
        }
        if (y) {
          y0 = z[0][1], y1 = z[1][1];
          if (!extentDomain) {
            y0 = extent[0][1], y1 = extent[1][1];
            if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
            if (y1 < y0) t = y0, y0 = y1, y1 = t;
          }
        }
        return x && y ? [ [ x0, y0 ], [ x1, y1 ] ] : x ? [ x0, x1 ] : y && [ y0, y1 ];
      }
      extentDomain = [ [ 0, 0 ], [ 0, 0 ] ];
      if (x) {
        x0 = z[0], x1 = z[1];
        if (y) x0 = x0[0], x1 = x1[0];
        extentDomain[0][0] = x0, extentDomain[1][0] = x1;
        if (x.invert) x0 = x(x0), x1 = x(x1);
        if (x1 < x0) t = x0, x0 = x1, x1 = t;
        extent[0][0] = x0 | 0, extent[1][0] = x1 | 0;
      }
      if (y) {
        y0 = z[0], y1 = z[1];
        if (x) y0 = y0[1], y1 = y1[1];
        extentDomain[0][1] = y0, extentDomain[1][1] = y1;
        if (y.invert) y0 = y(y0), y1 = y(y1);
        if (y1 < y0) t = y0, y0 = y1, y1 = t;
        extent[0][1] = y0 | 0, extent[1][1] = y1 | 0;
      }
      return brush;
    };
    brush.clear = function() {
      extentDomain = null;
      extent[0][0] = extent[0][1] = extent[1][0] = extent[1][1] = 0;
      return brush;
    };
    brush.empty = function() {
      return x && extent[0][0] === extent[1][0] || y && extent[0][1] === extent[1][1];
    };
    return d3.rebind(brush, event, "on");
  };
  var d3_svg_brushCursor = {
    n: "ns-resize",
    e: "ew-resize",
    s: "ns-resize",
    w: "ew-resize",
    nw: "nwse-resize",
    ne: "nesw-resize",
    se: "nwse-resize",
    sw: "nesw-resize"
  };
  var d3_svg_brushResizes = [ [ "n", "e", "s", "w", "nw", "ne", "se", "sw" ], [ "e", "w" ], [ "n", "s" ], [] ];
  d3.behavior = {};
  d3.behavior.drag = function() {
    var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"), origin = null;
    function drag() {
      this.on("mousedown.drag", mousedown).on("touchstart.drag", mousedown);
    }
    function mousedown() {
      var target = this, event_ = event.of(target, arguments), eventTarget = d3.event.target, touchId = d3.event.touches ? d3.event.changedTouches[0].identifier : null, offset, origin_ = point(), moved = 0;
      var w = d3.select(d3_window).on(touchId != null ? "touchmove.drag-" + touchId : "mousemove.drag", dragmove).on(touchId != null ? "touchend.drag-" + touchId : "mouseup.drag", dragend, true);
      if (origin) {
        offset = origin.apply(target, arguments);
        offset = [ offset.x - origin_[0], offset.y - origin_[1] ];
      } else {
        offset = [ 0, 0 ];
      }
      if (touchId == null) d3_eventCancel();
      event_({
        type: "dragstart"
      });
      function point() {
        var p = target.parentNode;
        return touchId != null ? d3.touches(p).filter(function(p) {
          return p.identifier === touchId;
        })[0] : d3.mouse(p);
      }
      function dragmove() {
        if (!target.parentNode) return dragend();
        var p = point(), dx = p[0] - origin_[0], dy = p[1] - origin_[1];
        moved |= dx | dy;
        origin_ = p;
        d3_eventCancel();
        event_({
          type: "drag",
          x: p[0] + offset[0],
          y: p[1] + offset[1],
          dx: dx,
          dy: dy
        });
      }
      function dragend() {
        event_({
          type: "dragend"
        });
        if (moved) {
          d3_eventCancel();
          if (d3.event.target === eventTarget) w.on("click.drag", click, true);
        }
        w.on(touchId != null ? "touchmove.drag-" + touchId : "mousemove.drag", null).on(touchId != null ? "touchend.drag-" + touchId : "mouseup.drag", null);
      }
      function click() {
        d3_eventCancel();
        w.on("click.drag", null);
      }
    }
    drag.origin = function(x) {
      if (!arguments.length) return origin;
      origin = x;
      return drag;
    };
    return d3.rebind(drag, event, "on");
  };
  d3.behavior.zoom = function() {
    var translate = [ 0, 0 ], translate0, scale = 1, scale0, scaleExtent = d3_behavior_zoomInfinity, event = d3_eventDispatch(zoom, "zoom"), x0, x1, y0, y1, touchtime;
    function zoom() {
      this.on("mousedown.zoom", mousedown).on("mousemove.zoom", mousemove).on(d3_behavior_zoomWheel + ".zoom", mousewheel).on("dblclick.zoom", dblclick).on("touchstart.zoom", touchstart).on("touchmove.zoom", touchmove).on("touchend.zoom", touchstart);
    }
    zoom.translate = function(x) {
      if (!arguments.length) return translate;
      translate = x.map(Number);
      rescale();
      return zoom;
    };
    zoom.scale = function(x) {
      if (!arguments.length) return scale;
      scale = +x;
      rescale();
      return zoom;
    };
    zoom.scaleExtent = function(x) {
      if (!arguments.length) return scaleExtent;
      scaleExtent = x == null ? d3_behavior_zoomInfinity : x.map(Number);
      return zoom;
    };
    zoom.x = function(z) {
      if (!arguments.length) return x1;
      x1 = z;
      x0 = z.copy();
      translate = [ 0, 0 ];
      scale = 1;
      return zoom;
    };
    zoom.y = function(z) {
      if (!arguments.length) return y1;
      y1 = z;
      y0 = z.copy();
      translate = [ 0, 0 ];
      scale = 1;
      return zoom;
    };
    function location(p) {
      return [ (p[0] - translate[0]) / scale, (p[1] - translate[1]) / scale ];
    }
    function point(l) {
      return [ l[0] * scale + translate[0], l[1] * scale + translate[1] ];
    }
    function scaleTo(s) {
      scale = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
    }
    function translateTo(p, l) {
      l = point(l);
      translate[0] += p[0] - l[0];
      translate[1] += p[1] - l[1];
    }
    function rescale() {
      if (x1) x1.domain(x0.range().map(function(x) {
        return (x - translate[0]) / scale;
      }).map(x0.invert));
      if (y1) y1.domain(y0.range().map(function(y) {
        return (y - translate[1]) / scale;
      }).map(y0.invert));
    }
    function dispatch(event) {
      rescale();
      d3.event.preventDefault();
      event({
        type: "zoom",
        scale: scale,
        translate: translate
      });
    }
    function mousedown() {
      var target = this, event_ = event.of(target, arguments), eventTarget = d3.event.target, moved = 0, w = d3.select(d3_window).on("mousemove.zoom", mousemove).on("mouseup.zoom", mouseup), l = location(d3.mouse(target));
      d3_window.focus();
      d3_eventCancel();
      function mousemove() {
        moved = 1;
        translateTo(d3.mouse(target), l);
        dispatch(event_);
      }
      function mouseup() {
        if (moved) d3_eventCancel();
        w.on("mousemove.zoom", null).on("mouseup.zoom", null);
        if (moved && d3.event.target === eventTarget) w.on("click.zoom", click, true);
      }
      function click() {
        d3_eventCancel();
        w.on("click.zoom", null);
      }
    }
    function mousewheel() {
      if (!translate0) translate0 = location(d3.mouse(this));
      scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * scale);
      translateTo(d3.mouse(this), translate0);
      dispatch(event.of(this, arguments));
    }
    function mousemove() {
      translate0 = null;
    }
    function dblclick() {
      var p = d3.mouse(this), l = location(p), k = Math.log(scale) / Math.LN2;
      scaleTo(Math.pow(2, d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1));
      translateTo(p, l);
      dispatch(event.of(this, arguments));
    }
    function touchstart() {
      var touches = d3.touches(this), now = Date.now();
      scale0 = scale;
      translate0 = {};
      touches.forEach(function(t) {
        translate0[t.identifier] = location(t);
      });
      d3_eventCancel();
      if (touches.length === 1) {
        if (now - touchtime < 500) {
          var p = touches[0], l = location(touches[0]);
          scaleTo(scale * 2);
          translateTo(p, l);
          dispatch(event.of(this, arguments));
        }
        touchtime = now;
      }
    }
    function touchmove() {
      var touches = d3.touches(this), p0 = touches[0], l0 = translate0[p0.identifier];
      if (p1 = touches[1]) {
        var p1, l1 = translate0[p1.identifier];
        p0 = [ (p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2 ];
        l0 = [ (l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2 ];
        scaleTo(d3.event.scale * scale0);
      }
      translateTo(p0, l0);
      touchtime = null;
      dispatch(event.of(this, arguments));
    }
    return d3.rebind(zoom, event, "on");
  };
  var d3_behavior_zoomInfinity = [ 0, Infinity ];
  var d3_behavior_zoomDelta, d3_behavior_zoomWheel = "onwheel" in document ? (d3_behavior_zoomDelta = function() {
    return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1);
  }, "wheel") : "onmousewheel" in document ? (d3_behavior_zoomDelta = function() {
    return d3.event.wheelDelta;
  }, "mousewheel") : (d3_behavior_zoomDelta = function() {
    return -d3.event.detail;
  }, "MozMousePixelScroll");
  d3.layout = {};
  d3.layout.bundle = function() {
    return function(links) {
      var paths = [], i = -1, n = links.length;
      while (++i < n) paths.push(d3_layout_bundlePath(links[i]));
      return paths;
    };
  };
  function d3_layout_bundlePath(link) {
    var start = link.source, end = link.target, lca = d3_layout_bundleLeastCommonAncestor(start, end), points = [ start ];
    while (start !== lca) {
      start = start.parent;
      points.push(start);
    }
    var k = points.length;
    while (end !== lca) {
      points.splice(k, 0, end);
      end = end.parent;
    }
    return points;
  }
  function d3_layout_bundleAncestors(node) {
    var ancestors = [], parent = node.parent;
    while (parent != null) {
      ancestors.push(node);
      node = parent;
      parent = parent.parent;
    }
    ancestors.push(node);
    return ancestors;
  }
  function d3_layout_bundleLeastCommonAncestor(a, b) {
    if (a === b) return a;
    var aNodes = d3_layout_bundleAncestors(a), bNodes = d3_layout_bundleAncestors(b), aNode = aNodes.pop(), bNode = bNodes.pop(), sharedNode = null;
    while (aNode === bNode) {
      sharedNode = aNode;
      aNode = aNodes.pop();
      bNode = bNodes.pop();
    }
    return sharedNode;
  }
  d3.layout.chord = function() {
    var chord = {}, chords, groups, matrix, n, padding = 0, sortGroups, sortSubgroups, sortChords;
    function relayout() {
      var subgroups = {}, groupSums = [], groupIndex = d3.range(n), subgroupIndex = [], k, x, x0, i, j;
      chords = [];
      groups = [];
      k = 0, i = -1;
      while (++i < n) {
        x = 0, j = -1;
        while (++j < n) {
          x += matrix[i][j];
        }
        groupSums.push(x);
        subgroupIndex.push(d3.range(n));
        k += x;
      }
      if (sortGroups) {
        groupIndex.sort(function(a, b) {
          return sortGroups(groupSums[a], groupSums[b]);
        });
      }
      if (sortSubgroups) {
        subgroupIndex.forEach(function(d, i) {
          d.sort(function(a, b) {
            return sortSubgroups(matrix[i][a], matrix[i][b]);
          });
        });
      }
      k = (2 * π - padding * n) / k;
      x = 0, i = -1;
      while (++i < n) {
        x0 = x, j = -1;
        while (++j < n) {
          var di = groupIndex[i], dj = subgroupIndex[di][j], v = matrix[di][dj], a0 = x, a1 = x += v * k;
          subgroups[di + "-" + dj] = {
            index: di,
            subindex: dj,
            startAngle: a0,
            endAngle: a1,
            value: v
          };
        }
        groups[di] = {
          index: di,
          startAngle: x0,
          endAngle: x,
          value: (x - x0) / k
        };
        x += padding;
      }
      i = -1;
      while (++i < n) {
        j = i - 1;
        while (++j < n) {
          var source = subgroups[i + "-" + j], target = subgroups[j + "-" + i];
          if (source.value || target.value) {
            chords.push(source.value < target.value ? {
              source: target,
              target: source
            } : {
              source: source,
              target: target
            });
          }
        }
      }
      if (sortChords) resort();
    }
    function resort() {
      chords.sort(function(a, b) {
        return sortChords((a.source.value + a.target.value) / 2, (b.source.value + b.target.value) / 2);
      });
    }
    chord.matrix = function(x) {
      if (!arguments.length) return matrix;
      n = (matrix = x) && matrix.length;
      chords = groups = null;
      return chord;
    };
    chord.padding = function(x) {
      if (!arguments.length) return padding;
      padding = x;
      chords = groups = null;
      return chord;
    };
    chord.sortGroups = function(x) {
      if (!arguments.length) return sortGroups;
      sortGroups = x;
      chords = groups = null;
      return chord;
    };
    chord.sortSubgroups = function(x) {
      if (!arguments.length) return sortSubgroups;
      sortSubgroups = x;
      chords = null;
      return chord;
    };
    chord.sortChords = function(x) {
      if (!arguments.length) return sortChords;
      sortChords = x;
      if (chords) resort();
      return chord;
    };
    chord.chords = function() {
      if (!chords) relayout();
      return chords;
    };
    chord.groups = function() {
      if (!groups) relayout();
      return groups;
    };
    return chord;
  };
  d3.layout.force = function() {
    var force = {}, event = d3.dispatch("start", "tick", "end"), size = [ 1, 1 ], drag, alpha, friction = .9, linkDistance = d3_layout_forceLinkDistance, linkStrength = d3_layout_forceLinkStrength, charge = -30, gravity = .1, theta = .8, nodes = [], links = [], distances, strengths, charges;
    function repulse(node) {
      return function(quad, x1, _, x2) {
        if (quad.point !== node) {
          var dx = quad.cx - node.x, dy = quad.cy - node.y, dn = 1 / Math.sqrt(dx * dx + dy * dy);
          if ((x2 - x1) * dn < theta) {
            var k = quad.charge * dn * dn;
            node.px -= dx * k;
            node.py -= dy * k;
            return true;
          }
          if (quad.point && isFinite(dn)) {
            var k = quad.pointCharge * dn * dn;
            node.px -= dx * k;
            node.py -= dy * k;
          }
        }
        return !quad.charge;
      };
    }
    force.tick = function() {
      if ((alpha *= .99) < .005) {
        event.end({
          type: "end",
          alpha: alpha = 0
        });
        return true;
      }
      var n = nodes.length, m = links.length, q, i, o, s, t, l, k, x, y;
      for (i = 0; i < m; ++i) {
        o = links[i];
        s = o.source;
        t = o.target;
        x = t.x - s.x;
        y = t.y - s.y;
        if (l = x * x + y * y) {
          l = alpha * strengths[i] * ((l = Math.sqrt(l)) - distances[i]) / l;
          x *= l;
          y *= l;
          t.x -= x * (k = s.weight / (t.weight + s.weight));
          t.y -= y * k;
          s.x += x * (k = 1 - k);
          s.y += y * k;
        }
      }
      if (k = alpha * gravity) {
        x = size[0] / 2;
        y = size[1] / 2;
        i = -1;
        if (k) while (++i < n) {
          o = nodes[i];
          o.x += (x - o.x) * k;
          o.y += (y - o.y) * k;
        }
      }
      if (charge) {
        d3_layout_forceAccumulate(q = d3.geom.quadtree(nodes), alpha, charges);
        i = -1;
        while (++i < n) {
          if (!(o = nodes[i]).fixed) {
            q.visit(repulse(o));
          }
        }
      }
      i = -1;
      while (++i < n) {
        o = nodes[i];
        if (o.fixed) {
          o.x = o.px;
          o.y = o.py;
        } else {
          o.x -= (o.px - (o.px = o.x)) * friction;
          o.y -= (o.py - (o.py = o.y)) * friction;
        }
      }
      event.tick({
        type: "tick",
        alpha: alpha
      });
    };
    force.nodes = function(x) {
      if (!arguments.length) return nodes;
      nodes = x;
      return force;
    };
    force.links = function(x) {
      if (!arguments.length) return links;
      links = x;
      return force;
    };
    force.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return force;
    };
    force.linkDistance = function(x) {
      if (!arguments.length) return linkDistance;
      linkDistance = typeof x === "function" ? x : +x;
      return force;
    };
    force.distance = force.linkDistance;
    force.linkStrength = function(x) {
      if (!arguments.length) return linkStrength;
      linkStrength = typeof x === "function" ? x : +x;
      return force;
    };
    force.friction = function(x) {
      if (!arguments.length) return friction;
      friction = +x;
      return force;
    };
    force.charge = function(x) {
      if (!arguments.length) return charge;
      charge = typeof x === "function" ? x : +x;
      return force;
    };
    force.gravity = function(x) {
      if (!arguments.length) return gravity;
      gravity = +x;
      return force;
    };
    force.theta = function(x) {
      if (!arguments.length) return theta;
      theta = +x;
      return force;
    };
    force.alpha = function(x) {
      if (!arguments.length) return alpha;
      x = +x;
      if (alpha) {
        if (x > 0) alpha = x; else alpha = 0;
      } else if (x > 0) {
        event.start({
          type: "start",
          alpha: alpha = x
        });
        d3.timer(force.tick);
      }
      return force;
    };
    force.start = function() {
      var i, j, n = nodes.length, m = links.length, w = size[0], h = size[1], neighbors, o;
      for (i = 0; i < n; ++i) {
        (o = nodes[i]).index = i;
        o.weight = 0;
      }
      for (i = 0; i < m; ++i) {
        o = links[i];
        if (typeof o.source == "number") o.source = nodes[o.source];
        if (typeof o.target == "number") o.target = nodes[o.target];
        ++o.source.weight;
        ++o.target.weight;
      }
      for (i = 0; i < n; ++i) {
        o = nodes[i];
        if (isNaN(o.x)) o.x = position("x", w);
        if (isNaN(o.y)) o.y = position("y", h);
        if (isNaN(o.px)) o.px = o.x;
        if (isNaN(o.py)) o.py = o.y;
      }
      distances = [];
      if (typeof linkDistance === "function") for (i = 0; i < m; ++i) distances[i] = +linkDistance.call(this, links[i], i); else for (i = 0; i < m; ++i) distances[i] = linkDistance;
      strengths = [];
      if (typeof linkStrength === "function") for (i = 0; i < m; ++i) strengths[i] = +linkStrength.call(this, links[i], i); else for (i = 0; i < m; ++i) strengths[i] = linkStrength;
      charges = [];
      if (typeof charge === "function") for (i = 0; i < n; ++i) charges[i] = +charge.call(this, nodes[i], i); else for (i = 0; i < n; ++i) charges[i] = charge;
      function position(dimension, size) {
        var neighbors = neighbor(i), j = -1, m = neighbors.length, x;
        while (++j < m) if (!isNaN(x = neighbors[j][dimension])) return x;
        return Math.random() * size;
      }
      function neighbor() {
        if (!neighbors) {
          neighbors = [];
          for (j = 0; j < n; ++j) {
            neighbors[j] = [];
          }
          for (j = 0; j < m; ++j) {
            var o = links[j];
            neighbors[o.source.index].push(o.target);
            neighbors[o.target.index].push(o.source);
          }
        }
        return neighbors[i];
      }
      return force.resume();
    };
    force.resume = function() {
      return force.alpha(.1);
    };
    force.stop = function() {
      return force.alpha(0);
    };
    force.drag = function() {
      if (!drag) drag = d3.behavior.drag().origin(d3_identity).on("dragstart.force", d3_layout_forceDragstart).on("drag.force", dragmove).on("dragend.force", d3_layout_forceDragend);
      if (!arguments.length) return drag;
      this.on("mouseover.force", d3_layout_forceMouseover).on("mouseout.force", d3_layout_forceMouseout).call(drag);
    };
    function dragmove(d) {
      d.px = d3.event.x, d.py = d3.event.y;
      force.resume();
    }
    return d3.rebind(force, event, "on");
  };
  function d3_layout_forceDragstart(d) {
    d.fixed |= 2;
  }
  function d3_layout_forceDragend(d) {
    d.fixed &= ~6;
  }
  function d3_layout_forceMouseover(d) {
    d.fixed |= 4;
    d.px = d.x, d.py = d.y;
  }
  function d3_layout_forceMouseout(d) {
    d.fixed &= ~4;
  }
  function d3_layout_forceAccumulate(quad, alpha, charges) {
    var cx = 0, cy = 0;
    quad.charge = 0;
    if (!quad.leaf) {
      var nodes = quad.nodes, n = nodes.length, i = -1, c;
      while (++i < n) {
        c = nodes[i];
        if (c == null) continue;
        d3_layout_forceAccumulate(c, alpha, charges);
        quad.charge += c.charge;
        cx += c.charge * c.cx;
        cy += c.charge * c.cy;
      }
    }
    if (quad.point) {
      if (!quad.leaf) {
        quad.point.x += Math.random() - .5;
        quad.point.y += Math.random() - .5;
      }
      var k = alpha * charges[quad.point.index];
      quad.charge += quad.pointCharge = k;
      cx += k * quad.point.x;
      cy += k * quad.point.y;
    }
    quad.cx = cx / quad.charge;
    quad.cy = cy / quad.charge;
  }
  var d3_layout_forceLinkDistance = 20, d3_layout_forceLinkStrength = 1;
  d3.layout.partition = function() {
    var hierarchy = d3.layout.hierarchy(), size = [ 1, 1 ];
    function position(node, x, dx, dy) {
      var children = node.children;
      node.x = x;
      node.y = node.depth * dy;
      node.dx = dx;
      node.dy = dy;
      if (children && (n = children.length)) {
        var i = -1, n, c, d;
        dx = node.value ? dx / node.value : 0;
        while (++i < n) {
          position(c = children[i], x, d = c.value * dx, dy);
          x += d;
        }
      }
    }
    function depth(node) {
      var children = node.children, d = 0;
      if (children && (n = children.length)) {
        var i = -1, n;
        while (++i < n) d = Math.max(d, depth(children[i]));
      }
      return 1 + d;
    }
    function partition(d, i) {
      var nodes = hierarchy.call(this, d, i);
      position(nodes[0], 0, size[0], size[1] / depth(nodes[0]));
      return nodes;
    }
    partition.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return partition;
    };
    return d3_layout_hierarchyRebind(partition, hierarchy);
  };
  d3.layout.pie = function() {
    var value = Number, sort = d3_layout_pieSortByValue, startAngle = 0, endAngle = 2 * π;
    function pie(data) {
      var values = data.map(function(d, i) {
        return +value.call(pie, d, i);
      });
      var a = +(typeof startAngle === "function" ? startAngle.apply(this, arguments) : startAngle);
      var k = ((typeof endAngle === "function" ? endAngle.apply(this, arguments) : endAngle) - startAngle) / d3.sum(values);
      var index = d3.range(data.length);
      if (sort != null) index.sort(sort === d3_layout_pieSortByValue ? function(i, j) {
        return values[j] - values[i];
      } : function(i, j) {
        return sort(data[i], data[j]);
      });
      var arcs = [];
      index.forEach(function(i) {
        var d;
        arcs[i] = {
          data: data[i],
          value: d = values[i],
          startAngle: a,
          endAngle: a += d * k
        };
      });
      return arcs;
    }
    pie.value = function(x) {
      if (!arguments.length) return value;
      value = x;
      return pie;
    };
    pie.sort = function(x) {
      if (!arguments.length) return sort;
      sort = x;
      return pie;
    };
    pie.startAngle = function(x) {
      if (!arguments.length) return startAngle;
      startAngle = x;
      return pie;
    };
    pie.endAngle = function(x) {
      if (!arguments.length) return endAngle;
      endAngle = x;
      return pie;
    };
    return pie;
  };
  var d3_layout_pieSortByValue = {};
  d3.layout.stack = function() {
    var values = d3_identity, order = d3_layout_stackOrderDefault, offset = d3_layout_stackOffsetZero, out = d3_layout_stackOut, x = d3_layout_stackX, y = d3_layout_stackY;
    function stack(data, index) {
      var series = data.map(function(d, i) {
        return values.call(stack, d, i);
      });
      var points = series.map(function(d) {
        return d.map(function(v, i) {
          return [ x.call(stack, v, i), y.call(stack, v, i) ];
        });
      });
      var orders = order.call(stack, points, index);
      series = d3.permute(series, orders);
      points = d3.permute(points, orders);
      var offsets = offset.call(stack, points, index);
      var n = series.length, m = series[0].length, i, j, o;
      for (j = 0; j < m; ++j) {
        out.call(stack, series[0][j], o = offsets[j], points[0][j][1]);
        for (i = 1; i < n; ++i) {
          out.call(stack, series[i][j], o += points[i - 1][j][1], points[i][j][1]);
        }
      }
      return data;
    }
    stack.values = function(x) {
      if (!arguments.length) return values;
      values = x;
      return stack;
    };
    stack.order = function(x) {
      if (!arguments.length) return order;
      order = typeof x === "function" ? x : d3_layout_stackOrders.get(x) || d3_layout_stackOrderDefault;
      return stack;
    };
    stack.offset = function(x) {
      if (!arguments.length) return offset;
      offset = typeof x === "function" ? x : d3_layout_stackOffsets.get(x) || d3_layout_stackOffsetZero;
      return stack;
    };
    stack.x = function(z) {
      if (!arguments.length) return x;
      x = z;
      return stack;
    };
    stack.y = function(z) {
      if (!arguments.length) return y;
      y = z;
      return stack;
    };
    stack.out = function(z) {
      if (!arguments.length) return out;
      out = z;
      return stack;
    };
    return stack;
  };
  function d3_layout_stackX(d) {
    return d.x;
  }
  function d3_layout_stackY(d) {
    return d.y;
  }
  function d3_layout_stackOut(d, y0, y) {
    d.y0 = y0;
    d.y = y;
  }
  var d3_layout_stackOrders = d3.map({
    "inside-out": function(data) {
      var n = data.length, i, j, max = data.map(d3_layout_stackMaxIndex), sums = data.map(d3_layout_stackReduceSum), index = d3.range(n).sort(function(a, b) {
        return max[a] - max[b];
      }), top = 0, bottom = 0, tops = [], bottoms = [];
      for (i = 0; i < n; ++i) {
        j = index[i];
        if (top < bottom) {
          top += sums[j];
          tops.push(j);
        } else {
          bottom += sums[j];
          bottoms.push(j);
        }
      }
      return bottoms.reverse().concat(tops);
    },
    reverse: function(data) {
      return d3.range(data.length).reverse();
    },
    "default": d3_layout_stackOrderDefault
  });
  var d3_layout_stackOffsets = d3.map({
    silhouette: function(data) {
      var n = data.length, m = data[0].length, sums = [], max = 0, i, j, o, y0 = [];
      for (j = 0; j < m; ++j) {
        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
        if (o > max) max = o;
        sums.push(o);
      }
      for (j = 0; j < m; ++j) {
        y0[j] = (max - sums[j]) / 2;
      }
      return y0;
    },
    wiggle: function(data) {
      var n = data.length, x = data[0], m = x.length, i, j, k, s1, s2, s3, dx, o, o0, y0 = [];
      y0[0] = o = o0 = 0;
      for (j = 1; j < m; ++j) {
        for (i = 0, s1 = 0; i < n; ++i) s1 += data[i][j][1];
        for (i = 0, s2 = 0, dx = x[j][0] - x[j - 1][0]; i < n; ++i) {
          for (k = 0, s3 = (data[i][j][1] - data[i][j - 1][1]) / (2 * dx); k < i; ++k) {
            s3 += (data[k][j][1] - data[k][j - 1][1]) / dx;
          }
          s2 += s3 * data[i][j][1];
        }
        y0[j] = o -= s1 ? s2 / s1 * dx : 0;
        if (o < o0) o0 = o;
      }
      for (j = 0; j < m; ++j) y0[j] -= o0;
      return y0;
    },
    expand: function(data) {
      var n = data.length, m = data[0].length, k = 1 / n, i, j, o, y0 = [];
      for (j = 0; j < m; ++j) {
        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
        if (o) for (i = 0; i < n; i++) data[i][j][1] /= o; else for (i = 0; i < n; i++) data[i][j][1] = k;
      }
      for (j = 0; j < m; ++j) y0[j] = 0;
      return y0;
    },
    zero: d3_layout_stackOffsetZero
  });
  function d3_layout_stackOrderDefault(data) {
    return d3.range(data.length);
  }
  function d3_layout_stackOffsetZero(data) {
    var j = -1, m = data[0].length, y0 = [];
    while (++j < m) y0[j] = 0;
    return y0;
  }
  function d3_layout_stackMaxIndex(array) {
    var i = 1, j = 0, v = array[0][1], k, n = array.length;
    for (;i < n; ++i) {
      if ((k = array[i][1]) > v) {
        j = i;
        v = k;
      }
    }
    return j;
  }
  function d3_layout_stackReduceSum(d) {
    return d.reduce(d3_layout_stackSum, 0);
  }
  function d3_layout_stackSum(p, d) {
    return p + d[1];
  }
  d3.layout.histogram = function() {
    var frequency = true, valuer = Number, ranger = d3_layout_histogramRange, binner = d3_layout_histogramBinSturges;
    function histogram(data, i) {
      var bins = [], values = data.map(valuer, this), range = ranger.call(this, values, i), thresholds = binner.call(this, range, values, i), bin, i = -1, n = values.length, m = thresholds.length - 1, k = frequency ? 1 : 1 / n, x;
      while (++i < m) {
        bin = bins[i] = [];
        bin.dx = thresholds[i + 1] - (bin.x = thresholds[i]);
        bin.y = 0;
      }
      if (m > 0) {
        i = -1;
        while (++i < n) {
          x = values[i];
          if (x >= range[0] && x <= range[1]) {
            bin = bins[d3.bisect(thresholds, x, 1, m) - 1];
            bin.y += k;
            bin.push(data[i]);
          }
        }
      }
      return bins;
    }
    histogram.value = function(x) {
      if (!arguments.length) return valuer;
      valuer = x;
      return histogram;
    };
    histogram.range = function(x) {
      if (!arguments.length) return ranger;
      ranger = d3_functor(x);
      return histogram;
    };
    histogram.bins = function(x) {
      if (!arguments.length) return binner;
      binner = typeof x === "number" ? function(range) {
        return d3_layout_histogramBinFixed(range, x);
      } : d3_functor(x);
      return histogram;
    };
    histogram.frequency = function(x) {
      if (!arguments.length) return frequency;
      frequency = !!x;
      return histogram;
    };
    return histogram;
  };
  function d3_layout_histogramBinSturges(range, values) {
    return d3_layout_histogramBinFixed(range, Math.ceil(Math.log(values.length) / Math.LN2 + 1));
  }
  function d3_layout_histogramBinFixed(range, n) {
    var x = -1, b = +range[0], m = (range[1] - b) / n, f = [];
    while (++x <= n) f[x] = m * x + b;
    return f;
  }
  function d3_layout_histogramRange(values) {
    return [ d3.min(values), d3.max(values) ];
  }
  d3.layout.hierarchy = function() {
    var sort = d3_layout_hierarchySort, children = d3_layout_hierarchyChildren, value = d3_layout_hierarchyValue;
    function recurse(node, depth, nodes) {
      var childs = children.call(hierarchy, node, depth);
      node.depth = depth;
      nodes.push(node);
      if (childs && (n = childs.length)) {
        var i = -1, n, c = node.children = [], v = 0, j = depth + 1, d;
        while (++i < n) {
          d = recurse(childs[i], j, nodes);
          d.parent = node;
          c.push(d);
          v += d.value;
        }
        if (sort) c.sort(sort);
        if (value) node.value = v;
      } else if (value) {
        node.value = +value.call(hierarchy, node, depth) || 0;
      }
      return node;
    }
    function revalue(node, depth) {
      var children = node.children, v = 0;
      if (children && (n = children.length)) {
        var i = -1, n, j = depth + 1;
        while (++i < n) v += revalue(children[i], j);
      } else if (value) {
        v = +value.call(hierarchy, node, depth) || 0;
      }
      if (value) node.value = v;
      return v;
    }
    function hierarchy(d) {
      var nodes = [];
      recurse(d, 0, nodes);
      return nodes;
    }
    hierarchy.sort = function(x) {
      if (!arguments.length) return sort;
      sort = x;
      return hierarchy;
    };
    hierarchy.children = function(x) {
      if (!arguments.length) return children;
      children = x;
      return hierarchy;
    };
    hierarchy.value = function(x) {
      if (!arguments.length) return value;
      value = x;
      return hierarchy;
    };
    hierarchy.revalue = function(root) {
      revalue(root, 0);
      return root;
    };
    return hierarchy;
  };
  function d3_layout_hierarchyRebind(object, hierarchy) {
    d3.rebind(object, hierarchy, "sort", "children", "value");
    object.nodes = object;
    object.links = d3_layout_hierarchyLinks;
    return object;
  }
  function d3_layout_hierarchyChildren(d) {
    return d.children;
  }
  function d3_layout_hierarchyValue(d) {
    return d.value;
  }
  function d3_layout_hierarchySort(a, b) {
    return b.value - a.value;
  }
  function d3_layout_hierarchyLinks(nodes) {
    return d3.merge(nodes.map(function(parent) {
      return (parent.children || []).map(function(child) {
        return {
          source: parent,
          target: child
        };
      });
    }));
  }
  d3.layout.pack = function() {
    var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort), padding = 0, size = [ 1, 1 ];
    function pack(d, i) {
      var nodes = hierarchy.call(this, d, i), root = nodes[0];
      root.x = 0;
      root.y = 0;
      d3_layout_treeVisitAfter(root, function(d) {
        d.r = Math.sqrt(d.value);
      });
      d3_layout_treeVisitAfter(root, d3_layout_packSiblings);
      var w = size[0], h = size[1], k = Math.max(2 * root.r / w, 2 * root.r / h);
      if (padding > 0) {
        var dr = padding * k / 2;
        d3_layout_treeVisitAfter(root, function(d) {
          d.r += dr;
        });
        d3_layout_treeVisitAfter(root, d3_layout_packSiblings);
        d3_layout_treeVisitAfter(root, function(d) {
          d.r -= dr;
        });
        k = Math.max(2 * root.r / w, 2 * root.r / h);
      }
      d3_layout_packTransform(root, w / 2, h / 2, 1 / k);
      return nodes;
    }
    pack.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return pack;
    };
    pack.padding = function(_) {
      if (!arguments.length) return padding;
      padding = +_;
      return pack;
    };
    return d3_layout_hierarchyRebind(pack, hierarchy);
  };
  function d3_layout_packSort(a, b) {
    return a.value - b.value;
  }
  function d3_layout_packInsert(a, b) {
    var c = a._pack_next;
    a._pack_next = b;
    b._pack_prev = a;
    b._pack_next = c;
    c._pack_prev = b;
  }
  function d3_layout_packSplice(a, b) {
    a._pack_next = b;
    b._pack_prev = a;
  }
  function d3_layout_packIntersects(a, b) {
    var dx = b.x - a.x, dy = b.y - a.y, dr = a.r + b.r;
    return dr * dr - dx * dx - dy * dy > .001;
  }
  function d3_layout_packSiblings(node) {
    if (!(nodes = node.children) || !(n = nodes.length)) return;
    var nodes, xMin = Infinity, xMax = -Infinity, yMin = Infinity, yMax = -Infinity, a, b, c, i, j, k, n;
    function bound(node) {
      xMin = Math.min(node.x - node.r, xMin);
      xMax = Math.max(node.x + node.r, xMax);
      yMin = Math.min(node.y - node.r, yMin);
      yMax = Math.max(node.y + node.r, yMax);
    }
    nodes.forEach(d3_layout_packLink);
    a = nodes[0];
    a.x = -a.r;
    a.y = 0;
    bound(a);
    if (n > 1) {
      b = nodes[1];
      b.x = b.r;
      b.y = 0;
      bound(b);
      if (n > 2) {
        c = nodes[2];
        d3_layout_packPlace(a, b, c);
        bound(c);
        d3_layout_packInsert(a, c);
        a._pack_prev = c;
        d3_layout_packInsert(c, b);
        b = a._pack_next;
        for (i = 3; i < n; i++) {
          d3_layout_packPlace(a, b, c = nodes[i]);
          var isect = 0, s1 = 1, s2 = 1;
          for (j = b._pack_next; j !== b; j = j._pack_next, s1++) {
            if (d3_layout_packIntersects(j, c)) {
              isect = 1;
              break;
            }
          }
          if (isect == 1) {
            for (k = a._pack_prev; k !== j._pack_prev; k = k._pack_prev, s2++) {
              if (d3_layout_packIntersects(k, c)) {
                break;
              }
            }
          }
          if (isect) {
            if (s1 < s2 || s1 == s2 && b.r < a.r) d3_layout_packSplice(a, b = j); else d3_layout_packSplice(a = k, b);
            i--;
          } else {
            d3_layout_packInsert(a, c);
            b = c;
            bound(c);
          }
        }
      }
    }
    var cx = (xMin + xMax) / 2, cy = (yMin + yMax) / 2, cr = 0;
    for (i = 0; i < n; i++) {
      c = nodes[i];
      c.x -= cx;
      c.y -= cy;
      cr = Math.max(cr, c.r + Math.sqrt(c.x * c.x + c.y * c.y));
    }
    node.r = cr;
    nodes.forEach(d3_layout_packUnlink);
  }
  function d3_layout_packLink(node) {
    node._pack_next = node._pack_prev = node;
  }
  function d3_layout_packUnlink(node) {
    delete node._pack_next;
    delete node._pack_prev;
  }
  function d3_layout_packTransform(node, x, y, k) {
    var children = node.children;
    node.x = x += k * node.x;
    node.y = y += k * node.y;
    node.r *= k;
    if (children) {
      var i = -1, n = children.length;
      while (++i < n) d3_layout_packTransform(children[i], x, y, k);
    }
  }
  function d3_layout_packPlace(a, b, c) {
    var db = a.r + c.r, dx = b.x - a.x, dy = b.y - a.y;
    if (db && (dx || dy)) {
      var da = b.r + c.r, dc = dx * dx + dy * dy;
      da *= da;
      db *= db;
      var x = .5 + (db - da) / (2 * dc), y = Math.sqrt(Math.max(0, 2 * da * (db + dc) - (db -= dc) * db - da * da)) / (2 * dc);
      c.x = a.x + x * dx + y * dy;
      c.y = a.y + x * dy - y * dx;
    } else {
      c.x = a.x + db;
      c.y = a.y;
    }
  }
  d3.layout.cluster = function() {
    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ];
    function cluster(d, i) {
      var nodes = hierarchy.call(this, d, i), root = nodes[0], previousNode, x = 0;
      d3_layout_treeVisitAfter(root, function(node) {
        var children = node.children;
        if (children && children.length) {
          node.x = d3_layout_clusterX(children);
          node.y = d3_layout_clusterY(children);
        } else {
          node.x = previousNode ? x += separation(node, previousNode) : 0;
          node.y = 0;
          previousNode = node;
        }
      });
      var left = d3_layout_clusterLeft(root), right = d3_layout_clusterRight(root), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2;
      d3_layout_treeVisitAfter(root, function(node) {
        node.x = (node.x - x0) / (x1 - x0) * size[0];
        node.y = (1 - (root.y ? node.y / root.y : 1)) * size[1];
      });
      return nodes;
    }
    cluster.separation = function(x) {
      if (!arguments.length) return separation;
      separation = x;
      return cluster;
    };
    cluster.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return cluster;
    };
    return d3_layout_hierarchyRebind(cluster, hierarchy);
  };
  function d3_layout_clusterY(children) {
    return 1 + d3.max(children, function(child) {
      return child.y;
    });
  }
  function d3_layout_clusterX(children) {
    return children.reduce(function(x, child) {
      return x + child.x;
    }, 0) / children.length;
  }
  function d3_layout_clusterLeft(node) {
    var children = node.children;
    return children && children.length ? d3_layout_clusterLeft(children[0]) : node;
  }
  function d3_layout_clusterRight(node) {
    var children = node.children, n;
    return children && (n = children.length) ? d3_layout_clusterRight(children[n - 1]) : node;
  }
  d3.layout.tree = function() {
    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ];
    function tree(d, i) {
      var nodes = hierarchy.call(this, d, i), root = nodes[0];
      function firstWalk(node, previousSibling) {
        var children = node.children, layout = node._tree;
        if (children && (n = children.length)) {
          var n, firstChild = children[0], previousChild, ancestor = firstChild, child, i = -1;
          while (++i < n) {
            child = children[i];
            firstWalk(child, previousChild);
            ancestor = apportion(child, previousChild, ancestor);
            previousChild = child;
          }
          d3_layout_treeShift(node);
          var midpoint = .5 * (firstChild._tree.prelim + child._tree.prelim);
          if (previousSibling) {
            layout.prelim = previousSibling._tree.prelim + separation(node, previousSibling);
            layout.mod = layout.prelim - midpoint;
          } else {
            layout.prelim = midpoint;
          }
        } else {
          if (previousSibling) {
            layout.prelim = previousSibling._tree.prelim + separation(node, previousSibling);
          }
        }
      }
      function secondWalk(node, x) {
        node.x = node._tree.prelim + x;
        var children = node.children;
        if (children && (n = children.length)) {
          var i = -1, n;
          x += node._tree.mod;
          while (++i < n) {
            secondWalk(children[i], x);
          }
        }
      }
      function apportion(node, previousSibling, ancestor) {
        if (previousSibling) {
          var vip = node, vop = node, vim = previousSibling, vom = node.parent.children[0], sip = vip._tree.mod, sop = vop._tree.mod, sim = vim._tree.mod, som = vom._tree.mod, shift;
          while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
            vom = d3_layout_treeLeft(vom);
            vop = d3_layout_treeRight(vop);
            vop._tree.ancestor = node;
            shift = vim._tree.prelim + sim - vip._tree.prelim - sip + separation(vim, vip);
            if (shift > 0) {
              d3_layout_treeMove(d3_layout_treeAncestor(vim, node, ancestor), node, shift);
              sip += shift;
              sop += shift;
            }
            sim += vim._tree.mod;
            sip += vip._tree.mod;
            som += vom._tree.mod;
            sop += vop._tree.mod;
          }
          if (vim && !d3_layout_treeRight(vop)) {
            vop._tree.thread = vim;
            vop._tree.mod += sim - sop;
          }
          if (vip && !d3_layout_treeLeft(vom)) {
            vom._tree.thread = vip;
            vom._tree.mod += sip - som;
            ancestor = node;
          }
        }
        return ancestor;
      }
      d3_layout_treeVisitAfter(root, function(node, previousSibling) {
        node._tree = {
          ancestor: node,
          prelim: 0,
          mod: 0,
          change: 0,
          shift: 0,
          number: previousSibling ? previousSibling._tree.number + 1 : 0
        };
      });
      firstWalk(root);
      secondWalk(root, -root._tree.prelim);
      var left = d3_layout_treeSearch(root, d3_layout_treeLeftmost), right = d3_layout_treeSearch(root, d3_layout_treeRightmost), deep = d3_layout_treeSearch(root, d3_layout_treeDeepest), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2, y1 = deep.depth || 1;
      d3_layout_treeVisitAfter(root, function(node) {
        node.x = (node.x - x0) / (x1 - x0) * size[0];
        node.y = node.depth / y1 * size[1];
        delete node._tree;
      });
      return nodes;
    }
    tree.separation = function(x) {
      if (!arguments.length) return separation;
      separation = x;
      return tree;
    };
    tree.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return tree;
    };
    return d3_layout_hierarchyRebind(tree, hierarchy);
  };
  function d3_layout_treeSeparation(a, b) {
    return a.parent == b.parent ? 1 : 2;
  }
  function d3_layout_treeLeft(node) {
    var children = node.children;
    return children && children.length ? children[0] : node._tree.thread;
  }
  function d3_layout_treeRight(node) {
    var children = node.children, n;
    return children && (n = children.length) ? children[n - 1] : node._tree.thread;
  }
  function d3_layout_treeSearch(node, compare) {
    var children = node.children;
    if (children && (n = children.length)) {
      var child, n, i = -1;
      while (++i < n) {
        if (compare(child = d3_layout_treeSearch(children[i], compare), node) > 0) {
          node = child;
        }
      }
    }
    return node;
  }
  function d3_layout_treeRightmost(a, b) {
    return a.x - b.x;
  }
  function d3_layout_treeLeftmost(a, b) {
    return b.x - a.x;
  }
  function d3_layout_treeDeepest(a, b) {
    return a.depth - b.depth;
  }
  function d3_layout_treeVisitAfter(node, callback) {
    function visit(node, previousSibling) {
      var children = node.children;
      if (children && (n = children.length)) {
        var child, previousChild = null, i = -1, n;
        while (++i < n) {
          child = children[i];
          visit(child, previousChild);
          previousChild = child;
        }
      }
      callback(node, previousSibling);
    }
    visit(node, null);
  }
  function d3_layout_treeShift(node) {
    var shift = 0, change = 0, children = node.children, i = children.length, child;
    while (--i >= 0) {
      child = children[i]._tree;
      child.prelim += shift;
      child.mod += shift;
      shift += child.shift + (change += child.change);
    }
  }
  function d3_layout_treeMove(ancestor, node, shift) {
    ancestor = ancestor._tree;
    node = node._tree;
    var change = shift / (node.number - ancestor.number);
    ancestor.change += change;
    node.change -= change;
    node.shift += shift;
    node.prelim += shift;
    node.mod += shift;
  }
  function d3_layout_treeAncestor(vim, node, ancestor) {
    return vim._tree.ancestor.parent == node.parent ? vim._tree.ancestor : ancestor;
  }
  d3.layout.treemap = function() {
    var hierarchy = d3.layout.hierarchy(), round = Math.round, size = [ 1, 1 ], padding = null, pad = d3_layout_treemapPadNull, sticky = false, stickies, mode = "squarify", ratio = .5 * (1 + Math.sqrt(5));
    function scale(children, k) {
      var i = -1, n = children.length, child, area;
      while (++i < n) {
        area = (child = children[i]).value * (k < 0 ? 0 : k);
        child.area = isNaN(area) || area <= 0 ? 0 : area;
      }
    }
    function squarify(node) {
      var children = node.children;
      if (children && children.length) {
        var rect = pad(node), row = [], remaining = children.slice(), child, best = Infinity, score, u = mode === "slice" ? rect.dx : mode === "dice" ? rect.dy : mode === "slice-dice" ? node.depth & 1 ? rect.dy : rect.dx : Math.min(rect.dx, rect.dy), n;
        scale(remaining, rect.dx * rect.dy / node.value);
        row.area = 0;
        while ((n = remaining.length) > 0) {
          row.push(child = remaining[n - 1]);
          row.area += child.area;
          if (mode !== "squarify" || (score = worst(row, u)) <= best) {
            remaining.pop();
            best = score;
          } else {
            row.area -= row.pop().area;
            position(row, u, rect, false);
            u = Math.min(rect.dx, rect.dy);
            row.length = row.area = 0;
            best = Infinity;
          }
        }
        if (row.length) {
          position(row, u, rect, true);
          row.length = row.area = 0;
        }
        children.forEach(squarify);
      }
    }
    function stickify(node) {
      var children = node.children;
      if (children && children.length) {
        var rect = pad(node), remaining = children.slice(), child, row = [];
        scale(remaining, rect.dx * rect.dy / node.value);
        row.area = 0;
        while (child = remaining.pop()) {
          row.push(child);
          row.area += child.area;
          if (child.z != null) {
            position(row, child.z ? rect.dx : rect.dy, rect, !remaining.length);
            row.length = row.area = 0;
          }
        }
        children.forEach(stickify);
      }
    }
    function worst(row, u) {
      var s = row.area, r, rmax = 0, rmin = Infinity, i = -1, n = row.length;
      while (++i < n) {
        if (!(r = row[i].area)) continue;
        if (r < rmin) rmin = r;
        if (r > rmax) rmax = r;
      }
      s *= s;
      u *= u;
      return s ? Math.max(u * rmax * ratio / s, s / (u * rmin * ratio)) : Infinity;
    }
    function position(row, u, rect, flush) {
      var i = -1, n = row.length, x = rect.x, y = rect.y, v = u ? round(row.area / u) : 0, o;
      if (u == rect.dx) {
        if (flush || v > rect.dy) v = rect.dy;
        while (++i < n) {
          o = row[i];
          o.x = x;
          o.y = y;
          o.dy = v;
          x += o.dx = Math.min(rect.x + rect.dx - x, v ? round(o.area / v) : 0);
        }
        o.z = true;
        o.dx += rect.x + rect.dx - x;
        rect.y += v;
        rect.dy -= v;
      } else {
        if (flush || v > rect.dx) v = rect.dx;
        while (++i < n) {
          o = row[i];
          o.x = x;
          o.y = y;
          o.dx = v;
          y += o.dy = Math.min(rect.y + rect.dy - y, v ? round(o.area / v) : 0);
        }
        o.z = false;
        o.dy += rect.y + rect.dy - y;
        rect.x += v;
        rect.dx -= v;
      }
    }
    function treemap(d) {
      var nodes = stickies || hierarchy(d), root = nodes[0];
      root.x = 0;
      root.y = 0;
      root.dx = size[0];
      root.dy = size[1];
      if (stickies) hierarchy.revalue(root);
      scale([ root ], root.dx * root.dy / root.value);
      (stickies ? stickify : squarify)(root);
      if (sticky) stickies = nodes;
      return nodes;
    }
    treemap.size = function(x) {
      if (!arguments.length) return size;
      size = x;
      return treemap;
    };
    treemap.padding = function(x) {
      if (!arguments.length) return padding;
      function padFunction(node) {
        var p = x.call(treemap, node, node.depth);
        return p == null ? d3_layout_treemapPadNull(node) : d3_layout_treemapPad(node, typeof p === "number" ? [ p, p, p, p ] : p);
      }
      function padConstant(node) {
        return d3_layout_treemapPad(node, x);
      }
      var type;
      pad = (padding = x) == null ? d3_layout_treemapPadNull : (type = typeof x) === "function" ? padFunction : type === "number" ? (x = [ x, x, x, x ], 
      padConstant) : padConstant;
      return treemap;
    };
    treemap.round = function(x) {
      if (!arguments.length) return round != Number;
      round = x ? Math.round : Number;
      return treemap;
    };
    treemap.sticky = function(x) {
      if (!arguments.length) return sticky;
      sticky = x;
      stickies = null;
      return treemap;
    };
    treemap.ratio = function(x) {
      if (!arguments.length) return ratio;
      ratio = x;
      return treemap;
    };
    treemap.mode = function(x) {
      if (!arguments.length) return mode;
      mode = x + "";
      return treemap;
    };
    return d3_layout_hierarchyRebind(treemap, hierarchy);
  };
  function d3_layout_treemapPadNull(node) {
    return {
      x: node.x,
      y: node.y,
      dx: node.dx,
      dy: node.dy
    };
  }
  function d3_layout_treemapPad(node, padding) {
    var x = node.x + padding[3], y = node.y + padding[0], dx = node.dx - padding[1] - padding[3], dy = node.dy - padding[0] - padding[2];
    if (dx < 0) {
      x += dx / 2;
      dx = 0;
    }
    if (dy < 0) {
      y += dy / 2;
      dy = 0;
    }
    return {
      x: x,
      y: y,
      dx: dx,
      dy: dy
    };
  }
  function d3_dsv(delimiter, mimeType) {
    var reFormat = new RegExp('["' + delimiter + "\n]"), delimiterCode = delimiter.charCodeAt(0);
    function dsv(url, callback) {
      return d3.xhr(url, mimeType, callback).response(response);
    }
    function response(request) {
      return dsv.parse(request.responseText);
    }
    dsv.parse = function(text) {
      var o;
      return dsv.parseRows(text, function(row) {
        if (o) return o(row);
        o = new Function("d", "return {" + row.map(function(name, i) {
          return JSON.stringify(name) + ": d[" + i + "]";
        }).join(",") + "}");
      });
    };
    dsv.parseRows = function(text, f) {
      var EOL = {}, EOF = {}, rows = [], N = text.length, I = 0, n = 0, t, eol;
      function token() {
        if (I >= N) return EOF;
        if (eol) return eol = false, EOL;
        var j = I;
        if (text.charCodeAt(j) === 34) {
          var i = j;
          while (i++ < N) {
            if (text.charCodeAt(i) === 34) {
              if (text.charCodeAt(i + 1) !== 34) break;
              ++i;
            }
          }
          I = i + 2;
          var c = text.charCodeAt(i + 1);
          if (c === 13) {
            eol = true;
            if (text.charCodeAt(i + 2) === 10) ++I;
          } else if (c === 10) {
            eol = true;
          }
          return text.substring(j + 1, i).replace(/""/g, '"');
        }
        while (I < N) {
          var c = text.charCodeAt(I++), k = 1;
          if (c === 10) eol = true; else if (c === 13) {
            eol = true;
            if (text.charCodeAt(I) === 10) ++I, ++k;
          } else if (c !== delimiterCode) continue;
          return text.substring(j, I - k);
        }
        return text.substring(j);
      }
      while ((t = token()) !== EOF) {
        var a = [];
        while (t !== EOL && t !== EOF) {
          a.push(t);
          t = token();
        }
        if (f && !(a = f(a, n++))) continue;
        rows.push(a);
      }
      return rows;
    };
    dsv.format = function(rows) {
      return rows.map(formatRow).join("\n");
    };
    function formatRow(row) {
      return row.map(formatValue).join(delimiter);
    }
    function formatValue(text) {
      return reFormat.test(text) ? '"' + text.replace(/\"/g, '""') + '"' : text;
    }
    return dsv;
  }
  d3.csv = d3_dsv(",", "text/csv");
  d3.tsv = d3_dsv("  ", "text/tab-separated-values");
  d3.geo = {};
  d3.geo.stream = function(object, listener) {
    if (d3_geo_streamObjectType.hasOwnProperty(object.type)) {
      d3_geo_streamObjectType[object.type](object, listener);
    } else {
      d3_geo_streamGeometry(object, listener);
    }
  };
  function d3_geo_streamGeometry(geometry, listener) {
    if (d3_geo_streamGeometryType.hasOwnProperty(geometry.type)) {
      d3_geo_streamGeometryType[geometry.type](geometry, listener);
    }
  }
  var d3_geo_streamObjectType = {
    Feature: function(feature, listener) {
      d3_geo_streamGeometry(feature.geometry, listener);
    },
    FeatureCollection: function(object, listener) {
      var features = object.features, i = -1, n = features.length;
      while (++i < n) d3_geo_streamGeometry(features[i].geometry, listener);
    }
  };
  var d3_geo_streamGeometryType = {
    Sphere: function(object, listener) {
      listener.sphere();
    },
    Point: function(object, listener) {
      var coordinate = object.coordinates;
      listener.point(coordinate[0], coordinate[1]);
    },
    MultiPoint: function(object, listener) {
      var coordinates = object.coordinates, i = -1, n = coordinates.length, coordinate;
      while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1]);
    },
    LineString: function(object, listener) {
      d3_geo_streamLine(object.coordinates, listener, 0);
    },
    MultiLineString: function(object, listener) {
      var coordinates = object.coordinates, i = -1, n = coordinates.length;
      while (++i < n) d3_geo_streamLine(coordinates[i], listener, 0);
    },
    Polygon: function(object, listener) {
      d3_geo_streamPolygon(object.coordinates, listener);
    },
    MultiPolygon: function(object, listener) {
      var coordinates = object.coordinates, i = -1, n = coordinates.length;
      while (++i < n) d3_geo_streamPolygon(coordinates[i], listener);
    },
    GeometryCollection: function(object, listener) {
      var geometries = object.geometries, i = -1, n = geometries.length;
      while (++i < n) d3_geo_streamGeometry(geometries[i], listener);
    }
  };
  function d3_geo_streamLine(coordinates, listener, closed) {
    var i = -1, n = coordinates.length - closed, coordinate;
    listener.lineStart();
    while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1]);
    listener.lineEnd();
  }
  function d3_geo_streamPolygon(coordinates, listener) {
    var i = -1, n = coordinates.length;
    listener.polygonStart();
    while (++i < n) d3_geo_streamLine(coordinates[i], listener, 1);
    listener.polygonEnd();
  }
  function d3_geo_spherical(cartesian) {
    return [ Math.atan2(cartesian[1], cartesian[0]), Math.asin(Math.max(-1, Math.min(1, cartesian[2]))) ];
  }
  function d3_geo_sphericalEqual(a, b) {
    return Math.abs(a[0] - b[0]) < ε && Math.abs(a[1] - b[1]) < ε;
  }
  function d3_geo_cartesian(spherical) {
    var λ = spherical[0], φ = spherical[1], cosφ = Math.cos(φ);
    return [ cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ) ];
  }
  function d3_geo_cartesianDot(a, b) {
    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
  }
  function d3_geo_cartesianCross(a, b) {
    return [ a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0] ];
  }
  function d3_geo_cartesianAdd(a, b) {
    a[0] += b[0];
    a[1] += b[1];
    a[2] += b[2];
  }
  function d3_geo_cartesianScale(vector, k) {
    return [ vector[0] * k, vector[1] * k, vector[2] * k ];
  }
  function d3_geo_cartesianNormalize(d) {
    var l = Math.sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
    d[0] /= l;
    d[1] /= l;
    d[2] /= l;
  }
  function d3_geo_resample(project) {
    var δ2 = .5, maxDepth = 16;
    function resample(stream) {
      var λ0, x0, y0, a0, b0, c0;
      var resample = {
        point: point,
        lineStart: lineStart,
        lineEnd: lineEnd,
        polygonStart: function() {
          stream.polygonStart();
          resample.lineStart = polygonLineStart;
        },
        polygonEnd: function() {
          stream.polygonEnd();
          resample.lineStart = lineStart;
        }
      };
      function point(x, y) {
        x = project(x, y);
        stream.point(x[0], x[1]);
      }
      function lineStart() {
        x0 = NaN;
        resample.point = linePoint;
        stream.lineStart();
      }
      function linePoint(λ, φ) {
        var c = d3_geo_cartesian([ λ, φ ]), p = project(λ, φ);
        resampleLineTo(x0, y0, λ0, a0, b0, c0, x0 = p[0], y0 = p[1], λ0 = λ, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream);
        stream.point(x0, y0);
      }
      function lineEnd() {
        resample.point = point;
        stream.lineEnd();
      }
      function polygonLineStart() {
        var λ00, φ00, x00, y00, a00, b00, c00;
        lineStart();
        resample.point = function(λ, φ) {
          linePoint(λ00 = λ, φ00 = φ), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0;
          resample.point = linePoint;
        };
        resample.lineEnd = function() {
          resampleLineTo(x0, y0, λ0, a0, b0, c0, x00, y00, λ00, a00, b00, c00, maxDepth, stream);
          resample.lineEnd = lineEnd;
          lineEnd();
        };
      }
      return resample;
    }
    function resampleLineTo(x0, y0, λ0, a0, b0, c0, x1, y1, λ1, a1, b1, c1, depth, stream) {
      var dx = x1 - x0, dy = y1 - y0, d2 = dx * dx + dy * dy;
      if (d2 > 4 * δ2 && depth--) {
        var a = a0 + a1, b = b0 + b1, c = c0 + c1, m = Math.sqrt(a * a + b * b + c * c), φ2 = Math.asin(c /= m), λ2 = Math.abs(Math.abs(c) - 1) < ε ? (λ0 + λ1) / 2 : Math.atan2(b, a), p = project(λ2, φ2), x2 = p[0], y2 = p[1], dx2 = x2 - x0, dy2 = y2 - y0, dz = dy * dx2 - dx * dy2;
        if (dz * dz / d2 > δ2 || Math.abs((dx * dx2 + dy * dy2) / d2 - .5) > .3) {
          resampleLineTo(x0, y0, λ0, a0, b0, c0, x2, y2, λ2, a /= m, b /= m, c, depth, stream);
          stream.point(x2, y2);
          resampleLineTo(x2, y2, λ2, a, b, c, x1, y1, λ1, a1, b1, c1, depth, stream);
        }
      }
    }
    resample.precision = function(_) {
      if (!arguments.length) return Math.sqrt(δ2);
      maxDepth = (δ2 = _ * _) > 0 && 16;
      return resample;
    };
    return resample;
  }
  d3.geo.albersUsa = function() {
    var lower48 = d3.geo.albers();
    var alaska = d3.geo.albers().rotate([ 160, 0 ]).center([ 0, 60 ]).parallels([ 55, 65 ]);
    var hawaii = d3.geo.albers().rotate([ 160, 0 ]).center([ 0, 20 ]).parallels([ 8, 18 ]);
    var puertoRico = d3.geo.albers().rotate([ 60, 0 ]).center([ 0, 10 ]).parallels([ 8, 18 ]);
    function albersUsa(coordinates) {
      return projection(coordinates)(coordinates);
    }
    function projection(point) {
      var lon = point[0], lat = point[1];
      return lat > 50 ? alaska : lon < -140 ? hawaii : lat < 21 ? puertoRico : lower48;
    }
    albersUsa.scale = function(x) {
      if (!arguments.length) return lower48.scale();
      lower48.scale(x);
      alaska.scale(x * .6);
      hawaii.scale(x);
      puertoRico.scale(x * 1.5);
      return albersUsa.translate(lower48.translate());
    };
    albersUsa.translate = function(x) {
      if (!arguments.length) return lower48.translate();
      var dz = lower48.scale(), dx = x[0], dy = x[1];
      lower48.translate(x);
      alaska.translate([ dx - .4 * dz, dy + .17 * dz ]);
      hawaii.translate([ dx - .19 * dz, dy + .2 * dz ]);
      puertoRico.translate([ dx + .58 * dz, dy + .43 * dz ]);
      return albersUsa;
    };
    return albersUsa.scale(lower48.scale());
  };
  function d3_geo_albers(φ0, φ1) {
    var sinφ0 = Math.sin(φ0), n = (sinφ0 + Math.sin(φ1)) / 2, C = 1 + sinφ0 * (2 * n - sinφ0), ρ0 = Math.sqrt(C) / n;
    function albers(λ, φ) {
      var ρ = Math.sqrt(C - 2 * n * Math.sin(φ)) / n;
      return [ ρ * Math.sin(λ *= n), ρ0 - ρ * Math.cos(λ) ];
    }
    albers.invert = function(x, y) {
      var ρ0_y = ρ0 - y;
      return [ Math.atan2(x, ρ0_y) / n, Math.asin((C - (x * x + ρ0_y * ρ0_y) * n * n) / (2 * n)) ];
    };
    return albers;
  }
  (d3.geo.albers = function() {
    var φ0 = 29.5 * d3_radians, φ1 = 45.5 * d3_radians, m = d3_geo_projectionMutator(d3_geo_albers), p = m(φ0, φ1);
    p.parallels = function(_) {
      if (!arguments.length) return [ φ0 * d3_degrees, φ1 * d3_degrees ];
      return m(φ0 = _[0] * d3_radians, φ1 = _[1] * d3_radians);
    };
    return p.rotate([ 98, 0 ]).center([ 0, 38 ]).scale(1e3);
  }).raw = d3_geo_albers;
  var d3_geo_azimuthalEqualArea = d3_geo_azimuthal(function(cosλcosφ) {
    return Math.sqrt(2 / (1 + cosλcosφ));
  }, function(ρ) {
    return 2 * Math.asin(ρ / 2);
  });
  (d3.geo.azimuthalEqualArea = function() {
    return d3_geo_projection(d3_geo_azimuthalEqualArea);
  }).raw = d3_geo_azimuthalEqualArea;
  var d3_geo_azimuthalEquidistant = d3_geo_azimuthal(function(cosλcosφ) {
    var c = Math.acos(cosλcosφ);
    return c && c / Math.sin(c);
  }, d3_identity);
  (d3.geo.azimuthalEquidistant = function() {
    return d3_geo_projection(d3_geo_azimuthalEquidistant);
  }).raw = d3_geo_azimuthalEquidistant;
  d3.geo.bounds = d3_geo_bounds(d3_identity);
  function d3_geo_bounds(projectStream) {
    var x0, y0, x1, y1;
    var bound = {
      point: boundPoint,
      lineStart: d3_noop,
      lineEnd: d3_noop,
      polygonStart: function() {
        bound.lineEnd = boundPolygonLineEnd;
      },
      polygonEnd: function() {
        bound.point = boundPoint;
      }
    };
    function boundPoint(x, y) {
      if (x < x0) x0 = x;
      if (x > x1) x1 = x;
      if (y < y0) y0 = y;
      if (y > y1) y1 = y;
    }
    function boundPolygonLineEnd() {
      bound.point = bound.lineEnd = d3_noop;
    }
    return function(feature) {
      y1 = x1 = -(x0 = y0 = Infinity);
      d3.geo.stream(feature, projectStream(bound));
      return [ [ x0, y0 ], [ x1, y1 ] ];
    };
  }
  d3.geo.centroid = function(object) {
    d3_geo_centroidDimension = d3_geo_centroidW = d3_geo_centroidX = d3_geo_centroidY = d3_geo_centroidZ = 0;
    d3.geo.stream(object, d3_geo_centroid);
    var m;
    if (d3_geo_centroidW && Math.abs(m = Math.sqrt(d3_geo_centroidX * d3_geo_centroidX + d3_geo_centroidY * d3_geo_centroidY + d3_geo_centroidZ * d3_geo_centroidZ)) > ε) {
      return [ Math.atan2(d3_geo_centroidY, d3_geo_centroidX) * d3_degrees, Math.asin(Math.max(-1, Math.min(1, d3_geo_centroidZ / m))) * d3_degrees ];
    }
  };
  var d3_geo_centroidDimension, d3_geo_centroidW, d3_geo_centroidX, d3_geo_centroidY, d3_geo_centroidZ;
  var d3_geo_centroid = {
    sphere: function() {
      if (d3_geo_centroidDimension < 2) {
        d3_geo_centroidDimension = 2;
        d3_geo_centroidW = d3_geo_centroidX = d3_geo_centroidY = d3_geo_centroidZ = 0;
      }
    },
    point: d3_geo_centroidPoint,
    lineStart: d3_geo_centroidLineStart,
    lineEnd: d3_geo_centroidLineEnd,
    polygonStart: function() {
      if (d3_geo_centroidDimension < 2) {
        d3_geo_centroidDimension = 2;
        d3_geo_centroidW = d3_geo_centroidX = d3_geo_centroidY = d3_geo_centroidZ = 0;
      }
      d3_geo_centroid.lineStart = d3_geo_centroidRingStart;
    },
    polygonEnd: function() {
      d3_geo_centroid.lineStart = d3_geo_centroidLineStart;
    }
  };
  function d3_geo_centroidPoint(λ, φ) {
    if (d3_geo_centroidDimension) return;
    ++d3_geo_centroidW;
    λ *= d3_radians;
    var cosφ = Math.cos(φ *= d3_radians);
    d3_geo_centroidX += (cosφ * Math.cos(λ) - d3_geo_centroidX) / d3_geo_centroidW;
    d3_geo_centroidY += (cosφ * Math.sin(λ) - d3_geo_centroidY) / d3_geo_centroidW;
    d3_geo_centroidZ += (Math.sin(φ) - d3_geo_centroidZ) / d3_geo_centroidW;
  }
  function d3_geo_centroidRingStart() {
    var λ00, φ00;
    d3_geo_centroidDimension = 1;
    d3_geo_centroidLineStart();
    d3_geo_centroidDimension = 2;
    var linePoint = d3_geo_centroid.point;
    d3_geo_centroid.point = function(λ, φ) {
      linePoint(λ00 = λ, φ00 = φ);
    };
    d3_geo_centroid.lineEnd = function() {
      d3_geo_centroid.point(λ00, φ00);
      d3_geo_centroidLineEnd();
      d3_geo_centroid.lineEnd = d3_geo_centroidLineEnd;
    };
  }
  function d3_geo_centroidLineStart() {
    var x0, y0, z0;
    if (d3_geo_centroidDimension > 1) return;
    if (d3_geo_centroidDimension < 1) {
      d3_geo_centroidDimension = 1;
      d3_geo_centroidW = d3_geo_centroidX = d3_geo_centroidY = d3_geo_centroidZ = 0;
    }
    d3_geo_centroid.point = function(λ, φ) {
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians);
      x0 = cosφ * Math.cos(λ);
      y0 = cosφ * Math.sin(λ);
      z0 = Math.sin(φ);
      d3_geo_centroid.point = nextPoint;
    };
    function nextPoint(λ, φ) {
      λ *= d3_radians;
      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), w = Math.atan2(Math.sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z);
      d3_geo_centroidW += w;
      d3_geo_centroidX += w * (x0 + (x0 = x));
      d3_geo_centroidY += w * (y0 + (y0 = y));
      d3_geo_centroidZ += w * (z0 + (z0 = z));
    }
  }
  function d3_geo_centroidLineEnd() {
    d3_geo_centroid.point = d3_geo_centroidPoint;
  }
  d3.geo.circle = function() {
    var origin = [ 0, 0 ], angle, precision = 6, interpolate;
    function circle() {
      var center = typeof origin === "function" ? origin.apply(this, arguments) : origin, rotate = d3_geo_rotation(-center[0] * d3_radians, -center[1] * d3_radians, 0).invert, ring = [];
      interpolate(null, null, 1, {
        point: function(x, y) {
          ring.push(x = rotate(x, y));
          x[0] *= d3_degrees, x[1] *= d3_degrees;
        }
      });
      return {
        type: "Polygon",
        coordinates: [ ring ]
      };
    }
    circle.origin = function(x) {
      if (!arguments.length) return origin;
      origin = x;
      return circle;
    };
    circle.angle = function(x) {
      if (!arguments.length) return angle;
      interpolate = d3_geo_circleInterpolate((angle = +x) * d3_radians, precision * d3_radians);
      return circle;
    };
    circle.precision = function(_) {
      if (!arguments.length) return precision;
      interpolate = d3_geo_circleInterpolate(angle * d3_radians, (precision = +_) * d3_radians);
      return circle;
    };
    return circle.angle(90);
  };
  function d3_geo_circleInterpolate(radians, precision) {
    var cr = Math.cos(radians), sr = Math.sin(radians);
    return function(from, to, direction, listener) {
      if (from != null) {
        from = d3_geo_circleAngle(cr, from);
        to = d3_geo_circleAngle(cr, to);
        if (direction > 0 ? from < to : from > to) from += direction * 2 * π;
      } else {
        from = radians + direction * 2 * π;
        to = radians;
      }
      var point;
      for (var step = direction * precision, t = from; direction > 0 ? t > to : t < to; t -= step) {
        listener.point((point = d3_geo_spherical([ cr, -sr * Math.cos(t), -sr * Math.sin(t) ]))[0], point[1]);
      }
    };
  }
  function d3_geo_circleAngle(cr, point) {
    var a = d3_geo_cartesian(point);
    a[0] -= cr;
    d3_geo_cartesianNormalize(a);
    var angle = Math.acos(Math.max(-1, Math.min(1, -a[1])));
    return ((-a[2] < 0 ? -angle : angle) + 2 * Math.PI - ε) % (2 * Math.PI);
  }
  function d3_geo_clip(pointVisible, clipLine, interpolate) {
    return function(listener) {
      var line = clipLine(listener);
      var clip = {
        point: point,
        lineStart: lineStart,
        lineEnd: lineEnd,
        polygonStart: function() {
          clip.point = pointRing;
          clip.lineStart = ringStart;
          clip.lineEnd = ringEnd;
          invisible = false;
          invisibleArea = visibleArea = 0;
          segments = [];
          listener.polygonStart();
        },
        polygonEnd: function() {
          clip.point = point;
          clip.lineStart = lineStart;
          clip.lineEnd = lineEnd;
          segments = d3.merge(segments);
          if (segments.length) {
            d3_geo_clipPolygon(segments, interpolate, listener);
          } else if (visibleArea < -ε || invisible && invisibleArea < -ε) {
            listener.lineStart();
            interpolate(null, null, 1, listener);
            listener.lineEnd();
          }
          listener.polygonEnd();
          segments = null;
        },
        sphere: function() {
          listener.polygonStart();
          listener.lineStart();
          interpolate(null, null, 1, listener);
          listener.lineEnd();
          listener.polygonEnd();
        }
      };
      function point(λ, φ) {
        if (pointVisible(λ, φ)) listener.point(λ, φ);
      }
      function pointLine(λ, φ) {
        line.point(λ, φ);
      }
      function lineStart() {
        clip.point = pointLine;
        line.lineStart();
      }
      function lineEnd() {
        clip.point = point;
        line.lineEnd();
      }
      var segments, visibleArea, invisibleArea, invisible;
      var buffer = d3_geo_clipBufferListener(), ringListener = clipLine(buffer), ring;
      function pointRing(λ, φ) {
        ringListener.point(λ, φ);
        ring.push([ λ, φ ]);
      }
      function ringStart() {
        ringListener.lineStart();
        ring = [];
      }
      function ringEnd() {
        pointRing(ring[0][0], ring[0][1]);
        ringListener.lineEnd();
        var clean = ringListener.clean(), ringSegments = buffer.buffer(), segment, n = ringSegments.length;
        if (!n) {
          invisible = true;
          invisibleArea += d3_geo_clipAreaRing(ring, -1);
          ring = null;
          return;
        }
        ring = null;
        if (clean & 1) {
          segment = ringSegments[0];
          visibleArea += d3_geo_clipAreaRing(segment, 1);
          var n = segment.length - 1, i = -1, point;
          listener.lineStart();
          while (++i < n) listener.point((point = segment[i])[0], point[1]);
          listener.lineEnd();
          return;
        }
        if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift()));
        segments.push(ringSegments.filter(d3_geo_clipSegmentLength1));
      }
      return clip;
    };
  }
  function d3_geo_clipPolygon(segments, interpolate, listener) {
    var subject = [], clip = [];
    segments.forEach(function(segment) {
      if ((n = segment.length) <= 1) return;
      var n, p0 = segment[0], p1 = segment[n - 1];
      if (d3_geo_sphericalEqual(p0, p1)) {
        listener.lineStart();
        for (var i = 0; i < n; ++i) listener.point((p0 = segment[i])[0], p0[1]);
        listener.lineEnd();
        return;
      }
      var a = {
        point: p0,
        points: segment,
        other: null,
        visited: false,
        entry: true,
        subject: true
      }, b = {
        point: p0,
        points: [ p0 ],
        other: a,
        visited: false,
        entry: false,
        subject: false
      };
      a.other = b;
      subject.push(a);
      clip.push(b);
      a = {
        point: p1,
        points: [ p1 ],
        other: null,
        visited: false,
        entry: false,
        subject: true
      };
      b = {
        point: p1,
        points: [ p1 ],
        other: a,
        visited: false,
        entry: true,
        subject: false
      };
      a.other = b;
      subject.push(a);
      clip.push(b);
    });
    clip.sort(d3_geo_clipSort);
    d3_geo_clipLinkCircular(subject);
    d3_geo_clipLinkCircular(clip);
    if (!subject.length) return;
    var start = subject[0], current, points, point;
    while (1) {
      current = start;
      while (current.visited) if ((current = current.next) === start) return;
      points = current.points;
      listener.lineStart();
      do {
        current.visited = current.other.visited = true;
        if (current.entry) {
          if (current.subject) {
            for (var i = 0; i < points.length; i++) listener.point((point = points[i])[0], point[1]);
          } else {
            interpolate(current.point, current.next.point, 1, listener);
          }
          current = current.next;
        } else {
          if (current.subject) {
            points = current.prev.points;
            for (var i = points.length; --i >= 0; ) listener.point((point = points[i])[0], point[1]);
          } else {
            interpolate(current.point, current.prev.point, -1, listener);
          }
          current = current.prev;
        }
        current = current.other;
        points = current.points;
      } while (!current.visited);
      listener.lineEnd();
    }
  }
  function d3_geo_clipLinkCircular(array) {
    if (!(n = array.length)) return;
    var n, i = 0, a = array[0], b;
    while (++i < n) {
      a.next = b = array[i];
      b.prev = a;
      a = b;
    }
    a.next = b = array[0];
    b.prev = a;
  }
  function d3_geo_clipSort(a, b) {
    return ((a = a.point)[0] < 0 ? a[1] - π / 2 - ε : π / 2 - a[1]) - ((b = b.point)[0] < 0 ? b[1] - π / 2 - ε : π / 2 - b[1]);
  }
  function d3_geo_clipSegmentLength1(segment) {
    return segment.length > 1;
  }
  function d3_geo_clipBufferListener() {
    var lines = [], line;
    return {
      lineStart: function() {
        lines.push(line = []);
      },
      point: function(λ, φ) {
        line.push([ λ, φ ]);
      },
      lineEnd: d3_noop,
      buffer: function() {
        var buffer = lines;
        lines = [];
        line = null;
        return buffer;
      }
    };
  }
  function d3_geo_clipAreaRing(ring, invisible) {
    if (!(n = ring.length)) return 0;
    var n, i = 0, area = 0, p = ring[0], λ = p[0], φ = p[1], cosφ = Math.cos(φ), x0 = Math.atan2(invisible * Math.sin(λ) * cosφ, Math.sin(φ)), y0 = 1 - invisible * Math.cos(λ) * cosφ, x1 = x0, x, y;
    while (++i < n) {
      p = ring[i];
      cosφ = Math.cos(φ = p[1]);
      x = Math.atan2(invisible * Math.sin(λ = p[0]) * cosφ, Math.sin(φ));
      y = 1 - invisible * Math.cos(λ) * cosφ;
      if (Math.abs(y0 - 2) < ε && Math.abs(y - 2) < ε) continue;
      if (Math.abs(y) < ε || Math.abs(y0) < ε) {} else if (Math.abs(Math.abs(x - x0) - π) < ε) {
        if (y + y0 > 2) area += 4 * (x - x0);
      } else if (Math.abs(y0 - 2) < ε) area += 4 * (x - x1); else area += ((3 * π + x - x0) % (2 * π) - π) * (y0 + y);
      x1 = x0, x0 = x, y0 = y;
    }
    return area;
  }
  var d3_geo_clipAntimeridian = d3_geo_clip(d3_true, d3_geo_clipAntimeridianLine, d3_geo_clipAntimeridianInterpolate);
  function d3_geo_clipAntimeridianLine(listener) {
    var λ0 = NaN, φ0 = NaN, sλ0 = NaN, clean;
    return {
      lineStart: function() {
        listener.lineStart();
        clean = 1;
      },
      point: function(λ1, φ1) {
        var sλ1 = λ1 > 0 ? π : -π, dλ = Math.abs(λ1 - λ0);
        if (Math.abs(dλ - π) < ε) {
          listener.point(λ0, φ0 = (φ0 + φ1) / 2 > 0 ? π / 2 : -π / 2);
          listener.point(sλ0, φ0);
          listener.lineEnd();
          listener.lineStart();
          listener.point(sλ1, φ0);
          listener.point(λ1, φ0);
          clean = 0;
        } else if (sλ0 !== sλ1 && dλ >= π) {
          if (Math.abs(λ0 - sλ0) < ε) λ0 -= sλ0 * ε;
          if (Math.abs(λ1 - sλ1) < ε) λ1 -= sλ1 * ε;
          φ0 = d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1);
          listener.point(sλ0, φ0);
          listener.lineEnd();
          listener.lineStart();
          listener.point(sλ1, φ0);
          clean = 0;
        }
        listener.point(λ0 = λ1, φ0 = φ1);
        sλ0 = sλ1;
      },
      lineEnd: function() {
        listener.lineEnd();
        λ0 = φ0 = NaN;
      },
      clean: function() {
        return 2 - clean;
      }
    };
  }
  function d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1) {
    var cosφ0, cosφ1, sinλ0_λ1 = Math.sin(λ0 - λ1);
    return Math.abs(sinλ0_λ1) > ε ? Math.atan((Math.sin(φ0) * (cosφ1 = Math.cos(φ1)) * Math.sin(λ1) - Math.sin(φ1) * (cosφ0 = Math.cos(φ0)) * Math.sin(λ0)) / (cosφ0 * cosφ1 * sinλ0_λ1)) : (φ0 + φ1) / 2;
  }
  function d3_geo_clipAntimeridianInterpolate(from, to, direction, listener) {
    var φ;
    if (from == null) {
      φ = direction * π / 2;
      listener.point(-π, φ);
      listener.point(0, φ);
      listener.point(π, φ);
      listener.point(π, 0);
      listener.point(π, -φ);
      listener.point(0, -φ);
      listener.point(-π, -φ);
      listener.point(-π, 0);
      listener.point(-π, φ);
    } else if (Math.abs(from[0] - to[0]) > ε) {
      var s = (from[0] < to[0] ? 1 : -1) * π;
      φ = direction * s / 2;
      listener.point(-s, φ);
      listener.point(0, φ);
      listener.point(s, φ);
    } else {
      listener.point(to[0], to[1]);
    }
  }
  function d3_geo_clipCircle(degrees) {
    var radians = degrees * d3_radians, cr = Math.cos(radians), interpolate = d3_geo_circleInterpolate(radians, 6 * d3_radians);
    return d3_geo_clip(visible, clipLine, interpolate);
    function visible(λ, φ) {
      return Math.cos(λ) * Math.cos(φ) > cr;
    }
    function clipLine(listener) {
      var point0, v0, v00, clean;
      return {
        lineStart: function() {
          v00 = v0 = false;
          clean = 1;
        },
        point: function(λ, φ) {
          var point1 = [ λ, φ ], point2, v = visible(λ, φ);
          if (!point0 && (v00 = v0 = v)) listener.lineStart();
          if (v !== v0) {
            point2 = intersect(point0, point1);
            if (d3_geo_sphericalEqual(point0, point2) || d3_geo_sphericalEqual(point1, point2)) {
              point1[0] += ε;
              point1[1] += ε;
              v = visible(point1[0], point1[1]);
            }
          }
          if (v !== v0) {
            clean = 0;
            if (v0 = v) {
              listener.lineStart();
              point2 = intersect(point1, point0);
              listener.point(point2[0], point2[1]);
            } else {
              point2 = intersect(point0, point1);
              listener.point(point2[0], point2[1]);
              listener.lineEnd();
            }
            point0 = point2;
          }
          if (v && (!point0 || !d3_geo_sphericalEqual(point0, point1))) listener.point(point1[0], point1[1]);
          point0 = point1;
        },
        lineEnd: function() {
          if (v0) listener.lineEnd();
          point0 = null;
        },
        clean: function() {
          return clean | (v00 && v0) << 1;
        }
      };
    }
    function intersect(a, b) {
      var pa = d3_geo_cartesian(a, 0), pb = d3_geo_cartesian(b, 0);
      var n1 = [ 1, 0, 0 ], n2 = d3_geo_cartesianCross(pa, pb), n2n2 = d3_geo_cartesianDot(n2, n2), n1n2 = n2[0], determinant = n2n2 - n1n2 * n1n2;
      if (!determinant) return a;
      var c1 = cr * n2n2 / determinant, c2 = -cr * n1n2 / determinant, n1xn2 = d3_geo_cartesianCross(n1, n2), A = d3_geo_cartesianScale(n1, c1), B = d3_geo_cartesianScale(n2, c2);
      d3_geo_cartesianAdd(A, B);
      var u = n1xn2, w = d3_geo_cartesianDot(A, u), uu = d3_geo_cartesianDot(u, u), t = Math.sqrt(w * w - uu * (d3_geo_cartesianDot(A, A) - 1)), q = d3_geo_cartesianScale(u, (-w - t) / uu);
      d3_geo_cartesianAdd(q, A);
      return d3_geo_spherical(q);
    }
  }
  function d3_geo_compose(a, b) {
    function compose(x, y) {
      return x = a(x, y), b(x[0], x[1]);
    }
    if (a.invert && b.invert) compose.invert = function(x, y) {
      return x = b.invert(x, y), x && a.invert(x[0], x[1]);
    };
    return compose;
  }
  function d3_geo_equirectangular(λ, φ) {
    return [ λ, φ ];
  }
  (d3.geo.equirectangular = function() {
    return d3_geo_projection(d3_geo_equirectangular).scale(250 / π);
  }).raw = d3_geo_equirectangular.invert = d3_geo_equirectangular;
  var d3_geo_gnomonic = d3_geo_azimuthal(function(cosλcosφ) {
    return 1 / cosλcosφ;
  }, Math.atan);
  (d3.geo.gnomonic = function() {
    return d3_geo_projection(d3_geo_gnomonic);
  }).raw = d3_geo_gnomonic;
  d3.geo.graticule = function() {
    var x1, x0, y1, y0, dx = 22.5, dy = dx, x, y, precision = 2.5;
    function graticule() {
      return {
        type: "MultiLineString",
        coordinates: lines()
      };
    }
    function lines() {
      return d3.range(Math.ceil(x0 / dx) * dx, x1, dx).map(x).concat(d3.range(Math.ceil(y0 / dy) * dy, y1, dy).map(y));
    }
    graticule.lines = function() {
      return lines().map(function(coordinates) {
        return {
          type: "LineString",
          coordinates: coordinates
        };
      });
    };
    graticule.outline = function() {
      return {
        type: "Polygon",
        coordinates: [ x(x0).concat(y(y1).slice(1), x(x1).reverse().slice(1), y(y0).reverse().slice(1)) ]
      };
    };
    graticule.extent = function(_) {
      if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
      x0 = +_[0][0], x1 = +_[1][0];
      y0 = +_[0][1], y1 = +_[1][1];
      if (x0 > x1) _ = x0, x0 = x1, x1 = _;
      if (y0 > y1) _ = y0, y0 = y1, y1 = _;
      return graticule.precision(precision);
    };
    graticule.step = function(_) {
      if (!arguments.length) return [ dx, dy ];
      dx = +_[0], dy = +_[1];
      return graticule;
    };
    graticule.precision = function(_) {
      if (!arguments.length) return precision;
      precision = +_;
      x = d3_geo_graticuleX(y0, y1, precision);
      y = d3_geo_graticuleY(x0, x1, precision);
      return graticule;
    };
    return graticule.extent([ [ -180 + ε, -90 + ε ], [ 180 - ε, 90 - ε ] ]);
  };
  function d3_geo_graticuleX(y0, y1, dy) {
    var y = d3.range(y0, y1 - ε, dy).concat(y1);
    return function(x) {
      return y.map(function(y) {
        return [ x, y ];
      });
    };
  }
  function d3_geo_graticuleY(x0, x1, dx) {
    var x = d3.range(x0, x1 - ε, dx).concat(x1);
    return function(y) {
      return x.map(function(x) {
        return [ x, y ];
      });
    };
  }
  function d3_geo_haversin(x) {
    return (x = Math.sin(x / 2)) * x;
  }
  d3.geo.interpolate = function(source, target) {
    return d3_geo_interpolate(source[0] * d3_radians, source[1] * d3_radians, target[0] * d3_radians, target[1] * d3_radians);
  };
  function d3_geo_interpolate(x0, y0, x1, y1) {
    var cy0 = Math.cos(y0), sy0 = Math.sin(y0), cy1 = Math.cos(y1), sy1 = Math.sin(y1), kx0 = cy0 * Math.cos(x0), ky0 = cy0 * Math.sin(x0), kx1 = cy1 * Math.cos(x1), ky1 = cy1 * Math.sin(x1), d = 2 * Math.asin(Math.sqrt(d3_geo_haversin(y1 - y0) + cy0 * cy1 * d3_geo_haversin(x1 - x0))), k = 1 / Math.sin(d);
    var interpolate = d ? function(t) {
      var B = Math.sin(t *= d) * k, A = Math.sin(d - t) * k, x = A * kx0 + B * kx1, y = A * ky0 + B * ky1, z = A * sy0 + B * sy1;
      return [ Math.atan2(y, x) * d3_degrees, Math.atan2(z, Math.sqrt(x * x + y * y)) * d3_degrees ];
    } : function() {
      return [ x0 * d3_degrees, y0 * d3_degrees ];
    };
    interpolate.distance = d;
    return interpolate;
  }
  d3.geo.greatArc = function() {
    var source = d3_source, source_, target = d3_target, target_, precision = 6 * d3_radians, interpolate;
    function greatArc() {
      var p0 = source_ || source.apply(this, arguments), p1 = target_ || target.apply(this, arguments), i = interpolate || d3.geo.interpolate(p0, p1), t = 0, dt = precision / i.distance, coordinates = [ p0 ];
      while ((t += dt) < 1) coordinates.push(i(t));
      coordinates.push(p1);
      return {
        type: "LineString",
        coordinates: coordinates
      };
    }
    greatArc.distance = function() {
      return (interpolate || d3.geo.interpolate(source_ || source.apply(this, arguments), target_ || target.apply(this, arguments))).distance;
    };
    greatArc.source = function(_) {
      if (!arguments.length) return source;
      source = _, source_ = typeof _ === "function" ? null : _;
      interpolate = source_ && target_ ? d3.geo.interpolate(source_, target_) : null;
      return greatArc;
    };
    greatArc.target = function(_) {
      if (!arguments.length) return target;
      target = _, target_ = typeof _ === "function" ? null : _;
      interpolate = source_ && target_ ? d3.geo.interpolate(source_, target_) : null;
      return greatArc;
    };
    greatArc.precision = function(_) {
      if (!arguments.length) return precision / d3_radians;
      precision = _ * d3_radians;
      return greatArc;
    };
    return greatArc;
  };
  function d3_geo_mercator(λ, φ) {
    return [ λ / (2 * π), Math.max(-.5, Math.min(+.5, Math.log(Math.tan(π / 4 + φ / 2)) / (2 * π))) ];
  }
  d3_geo_mercator.invert = function(x, y) {
    return [ 2 * π * x, 2 * Math.atan(Math.exp(2 * π * y)) - π / 2 ];
  };
  (d3.geo.mercator = function() {
    return d3_geo_projection(d3_geo_mercator).scale(500);
  }).raw = d3_geo_mercator;
  var d3_geo_orthographic = d3_geo_azimuthal(function() {
    return 1;
  }, Math.asin);
  (d3.geo.orthographic = function() {
    return d3_geo_projection(d3_geo_orthographic);
  }).raw = d3_geo_orthographic;
  d3.geo.path = function() {
    var pointRadius = 4.5, projection, context, projectStream, contextStream;
    function path(object) {
      if (object) d3.geo.stream(object, projectStream(contextStream.pointRadius(typeof pointRadius === "function" ? +pointRadius.apply(this, arguments) : pointRadius)));
      return contextStream.result();
    }
    path.area = function(object) {
      d3_geo_pathAreaSum = 0;
      d3.geo.stream(object, projectStream(d3_geo_pathArea));
      return d3_geo_pathAreaSum;
    };
    path.centroid = function(object) {
      d3_geo_centroidDimension = d3_geo_centroidX = d3_geo_centroidY = d3_geo_centroidZ = 0;
      d3.geo.stream(object, projectStream(d3_geo_pathCentroid));
      return d3_geo_centroidZ ? [ d3_geo_centroidX / d3_geo_centroidZ, d3_geo_centroidY / d3_geo_centroidZ ] : undefined;
    };
    path.bounds = function(object) {
      return d3_geo_bounds(projectStream)(object);
    };
    path.projection = function(_) {
      if (!arguments.length) return projection;
      projectStream = (projection = _) ? _.stream || d3_geo_pathProjectStream(_) : d3_identity;
      return path;
    };
    path.context = function(_) {
      if (!arguments.length) return context;
      contextStream = (context = _) == null ? new d3_geo_pathBuffer() : new d3_geo_pathContext(_);
      return path;
    };
    path.pointRadius = function(_) {
      if (!arguments.length) return pointRadius;
      pointRadius = typeof _ === "function" ? _ : +_;
      return path;
    };
    return path.projection(d3.geo.albersUsa()).context(null);
  };
  function d3_geo_pathCircle(radius) {
    return "m0," + radius + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius + "a" + radius + "," + radius + " 0 1,1 0," + +2 * radius + "z";
  }
  function d3_geo_pathProjectStream(project) {
    var resample = d3_geo_resample(function(λ, φ) {
      return project([ λ * d3_degrees, φ * d3_degrees ]);
    });
    return function(stream) {
      stream = resample(stream);
      return {
        point: function(λ, φ) {
          stream.point(λ * d3_radians, φ * d3_radians);
        },
        sphere: function() {
          stream.sphere();
        },
        lineStart: function() {
          stream.lineStart();
        },
        lineEnd: function() {
          stream.lineEnd();
        },
        polygonStart: function() {
          stream.polygonStart();
        },
        polygonEnd: function() {
          stream.polygonEnd();
        }
      };
    };
  }
  function d3_geo_pathBuffer() {
    var pointCircle = d3_geo_pathCircle(4.5), buffer = [];
    var stream = {
      point: point,
      lineStart: function() {
        stream.point = pointLineStart;
      },
      lineEnd: lineEnd,
      polygonStart: function() {
        stream.lineEnd = lineEndPolygon;
      },
      polygonEnd: function() {
        stream.lineEnd = lineEnd;
        stream.point = point;
      },
      pointRadius: function(_) {
        pointCircle = d3_geo_pathCircle(_);
        return stream;
      },
      result: function() {
        if (buffer.length) {
          var result = buffer.join("");
          buffer = [];
          return result;
        }
      }
    };
    function point(x, y) {
      buffer.push("M", x, ",", y, pointCircle);
    }
    function pointLineStart(x, y) {
      buffer.push("M", x, ",", y);
      stream.point = pointLine;
    }
    function pointLine(x, y) {
      buffer.push("L", x, ",", y);
    }
    function lineEnd() {
      stream.point = point;
    }
    function lineEndPolygon() {
      buffer.push("Z");
    }
    return stream;
  }
  function d3_geo_pathContext(context) {
    var pointRadius = 4.5;
    var stream = {
      point: point,
      lineStart: function() {
        stream.point = pointLineStart;
      },
      lineEnd: lineEnd,
      polygonStart: function() {
        stream.lineEnd = lineEndPolygon;
      },
      polygonEnd: function() {
        stream.lineEnd = lineEnd;
        stream.point = point;
      },
      pointRadius: function(_) {
        pointRadius = _;
        return stream;
      },
      result: d3_noop
    };
    function point(x, y) {
      context.moveTo(x, y);
      context.arc(x, y, pointRadius, 0, 2 * π);
    }
    function pointLineStart(x, y) {
      context.moveTo(x, y);
      stream.point = pointLine;
    }
    function pointLine(x, y) {
      context.lineTo(x, y);
    }
    function lineEnd() {
      stream.point = point;
    }
    function lineEndPolygon() {
      context.closePath();
    }
    return stream;
  }
  var d3_geo_pathAreaSum, d3_geo_pathAreaPolygon, d3_geo_pathArea = {
    point: d3_noop,
    lineStart: d3_noop,
    lineEnd: d3_noop,
    polygonStart: function() {
      d3_geo_pathAreaPolygon = 0;
      d3_geo_pathArea.lineStart = d3_geo_pathAreaRingStart;
    },
    polygonEnd: function() {
      d3_geo_pathArea.lineStart = d3_geo_pathArea.lineEnd = d3_geo_pathArea.point = d3_noop;
      d3_geo_pathAreaSum += Math.abs(d3_geo_pathAreaPolygon / 2);
    }
  };
  function d3_geo_pathAreaRingStart() {
    var x00, y00, x0, y0;
    d3_geo_pathArea.point = function(x, y) {
      d3_geo_pathArea.point = nextPoint;
      x00 = x0 = x, y00 = y0 = y;
    };
    function nextPoint(x, y) {
      d3_geo_pathAreaPolygon += y0 * x - x0 * y;
      x0 = x, y0 = y;
    }
    d3_geo_pathArea.lineEnd = function() {
      nextPoint(x00, y00);
    };
  }
  var d3_geo_pathCentroid = {
    point: d3_geo_pathCentroidPoint,
    lineStart: d3_geo_pathCentroidLineStart,
    lineEnd: d3_geo_pathCentroidLineEnd,
    polygonStart: function() {
      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidRingStart;
    },
    polygonEnd: function() {
      d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidLineStart;
      d3_geo_pathCentroid.lineEnd = d3_geo_pathCentroidLineEnd;
    }
  };
  function d3_geo_pathCentroidPoint(x, y) {
    if (d3_geo_centroidDimension) return;
    d3_geo_centroidX += x;
    d3_geo_centroidY += y;
    ++d3_geo_centroidZ;
  }
  function d3_geo_pathCentroidLineStart() {
    var x0, y0;
    if (d3_geo_centroidDimension !== 1) {
      if (d3_geo_centroidDimension < 1) {
        d3_geo_centroidDimension = 1;
        d3_geo_centroidX = d3_geo_centroidY = d3_geo_centroidZ = 0;
      } else return;
    }
    d3_geo_pathCentroid.point = function(x, y) {
      d3_geo_pathCentroid.point = nextPoint;
      x0 = x, y0 = y;
    };
    function nextPoint(x, y) {
      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
      d3_geo_centroidX += z * (x0 + x) / 2;
      d3_geo_centroidY += z * (y0 + y) / 2;
      d3_geo_centroidZ += z;
      x0 = x, y0 = y;
    }
  }
  function d3_geo_pathCentroidLineEnd() {
    d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
  }
  function d3_geo_pathCentroidRingStart() {
    var x00, y00, x0, y0;
    if (d3_geo_centroidDimension < 2) {
      d3_geo_centroidDimension = 2;
      d3_geo_centroidX = d3_geo_centroidY = d3_geo_centroidZ = 0;
    }
    d3_geo_pathCentroid.point = function(x, y) {
      d3_geo_pathCentroid.point = nextPoint;
      x00 = x0 = x, y00 = y0 = y;
    };
    function nextPoint(x, y) {
      var z = y0 * x - x0 * y;
      d3_geo_centroidX += z * (x0 + x);
      d3_geo_centroidY += z * (y0 + y);
      d3_geo_centroidZ += z * 3;
      x0 = x, y0 = y;
    }
    d3_geo_pathCentroid.lineEnd = function() {
      nextPoint(x00, y00);
    };
  }
  d3.geo.area = function(object) {
    d3_geo_areaSum = 0;
    d3.geo.stream(object, d3_geo_area);
    return d3_geo_areaSum;
  };
  var d3_geo_areaSum, d3_geo_areaRingU, d3_geo_areaRingV;
  var d3_geo_area = {
    sphere: function() {
      d3_geo_areaSum += 4 * π;
    },
    point: d3_noop,
    lineStart: d3_noop,
    lineEnd: d3_noop,
    polygonStart: function() {
      d3_geo_areaRingU = 1, d3_geo_areaRingV = 0;
      d3_geo_area.lineStart = d3_geo_areaRingStart;
    },
    polygonEnd: function() {
      var area = 2 * Math.atan2(d3_geo_areaRingV, d3_geo_areaRingU);
      d3_geo_areaSum += area < 0 ? 4 * π + area : area;
      d3_geo_area.lineStart = d3_geo_area.lineEnd = d3_geo_area.point = d3_noop;
    }
  };
  function d3_geo_areaRingStart() {
    var λ00, φ00, λ0, cosφ0, sinφ0;
    d3_geo_area.point = function(λ, φ) {
      d3_geo_area.point = nextPoint;
      λ0 = (λ00 = λ) * d3_radians, cosφ0 = Math.cos(φ = (φ00 = φ) * d3_radians / 2 + π / 4), 
      sinφ0 = Math.sin(φ);
    };
    function nextPoint(λ, φ) {
      λ *= d3_radians;
      φ = φ * d3_radians / 2 + π / 4;
      var dλ = λ - λ0, cosφ = Math.cos(φ), sinφ = Math.sin(φ), k = sinφ0 * sinφ, u0 = d3_geo_areaRingU, v0 = d3_geo_areaRingV, u = cosφ0 * cosφ + k * Math.cos(dλ), v = k * Math.sin(dλ);
      d3_geo_areaRingU = u0 * u - v0 * v;
      d3_geo_areaRingV = v0 * u + u0 * v;
      λ0 = λ, cosφ0 = cosφ, sinφ0 = sinφ;
    }
    d3_geo_area.lineEnd = function() {
      nextPoint(λ00, φ00);
    };
  }
  d3.geo.projection = d3_geo_projection;
  d3.geo.projectionMutator = d3_geo_projectionMutator;
  function d3_geo_projection(project) {
    return d3_geo_projectionMutator(function() {
      return project;
    })();
  }
  function d3_geo_projectionMutator(projectAt) {
    var project, rotate, projectRotate, projectResample = d3_geo_resample(function(x, y) {
      x = project(x, y);
      return [ x[0] * k + δx, δy - x[1] * k ];
    }), k = 150, x = 480, y = 250, λ = 0, φ = 0, δλ = 0, δφ = 0, δγ = 0, δx, δy, clip = d3_geo_clipAntimeridian, clipAngle = null;
    function projection(point) {
      point = projectRotate(point[0] * d3_radians, point[1] * d3_radians);
      return [ point[0] * k + δx, δy - point[1] * k ];
    }
    function invert(point) {
      point = projectRotate.invert((point[0] - δx) / k, (δy - point[1]) / k);
      return point && [ point[0] * d3_degrees, point[1] * d3_degrees ];
    }
    projection.stream = function(stream) {
      return d3_geo_projectionRadiansRotate(rotate, clip(projectResample(stream)));
    };
    projection.clipAngle = function(_) {
      if (!arguments.length) return clipAngle;
      clip = _ == null ? (clipAngle = _, d3_geo_clipAntimeridian) : d3_geo_clipCircle(clipAngle = +_);
      return projection;
    };
    projection.scale = function(_) {
      if (!arguments.length) return k;
      k = +_;
      return reset();
    };
    projection.translate = function(_) {
      if (!arguments.length) return [ x, y ];
      x = +_[0];
      y = +_[1];
      return reset();
    };
    projection.center = function(_) {
      if (!arguments.length) return [ λ * d3_degrees, φ * d3_degrees ];
      λ = _[0] % 360 * d3_radians;
      φ = _[1] % 360 * d3_radians;
      return reset();
    };
    projection.rotate = function(_) {
      if (!arguments.length) return [ δλ * d3_degrees, δφ * d3_degrees, δγ * d3_degrees ];
      δλ = _[0] % 360 * d3_radians;
      δφ = _[1] % 360 * d3_radians;
      δγ = _.length > 2 ? _[2] % 360 * d3_radians : 0;
      return reset();
    };
    d3.rebind(projection, projectResample, "precision");
    function reset() {
      projectRotate = d3_geo_compose(rotate = d3_geo_rotation(δλ, δφ, δγ), project);
      var center = project(λ, φ);
      δx = x - center[0] * k;
      δy = y + center[1] * k;
      return projection;
    }
    return function() {
      project = projectAt.apply(this, arguments);
      projection.invert = project.invert && invert;
      return reset();
    };
  }
  function d3_geo_projectionRadiansRotate(rotate, stream) {
    return {
      point: function(x, y) {
        y = rotate(x * d3_radians, y * d3_radians), x = y[0];
        stream.point(x > π ? x - 2 * π : x < -π ? x + 2 * π : x, y[1]);
      },
      sphere: function() {
        stream.sphere();
      },
      lineStart: function() {
        stream.lineStart();
      },
      lineEnd: function() {
        stream.lineEnd();
      },
      polygonStart: function() {
        stream.polygonStart();
      },
      polygonEnd: function() {
        stream.polygonEnd();
      }
    };
  }
  function d3_geo_rotation(δλ, δφ, δγ) {
    return δλ ? δφ || δγ ? d3_geo_compose(d3_geo_rotationλ(δλ), d3_geo_rotationφγ(δφ, δγ)) : d3_geo_rotationλ(δλ) : δφ || δγ ? d3_geo_rotationφγ(δφ, δγ) : d3_geo_equirectangular;
  }
  function d3_geo_forwardRotationλ(δλ) {
    return function(λ, φ) {
      return λ += δλ, [ λ > π ? λ - 2 * π : λ < -π ? λ + 2 * π : λ, φ ];
    };
  }
  function d3_geo_rotationλ(δλ) {
    var rotation = d3_geo_forwardRotationλ(δλ);
    rotation.invert = d3_geo_forwardRotationλ(-δλ);
    return rotation;
  }
  function d3_geo_rotationφγ(δφ, δγ) {
    var cosδφ = Math.cos(δφ), sinδφ = Math.sin(δφ), cosδγ = Math.cos(δγ), sinδγ = Math.sin(δγ);
    function rotation(λ, φ) {
      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδφ + x * sinδφ;
      return [ Math.atan2(y * cosδγ - k * sinδγ, x * cosδφ - z * sinδφ), Math.asin(Math.max(-1, Math.min(1, k * cosδγ + y * sinδγ))) ];
    }
    rotation.invert = function(λ, φ) {
      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδγ - y * sinδγ;
      return [ Math.atan2(y * cosδγ + z * sinδγ, x * cosδφ + k * sinδφ), Math.asin(Math.max(-1, Math.min(1, k * cosδφ - x * sinδφ))) ];
    };
    return rotation;
  }
  var d3_geo_stereographic = d3_geo_azimuthal(function(cosλcosφ) {
    return 1 / (1 + cosλcosφ);
  }, function(ρ) {
    return 2 * Math.atan(ρ);
  });
  (d3.geo.stereographic = function() {
    return d3_geo_projection(d3_geo_stereographic);
  }).raw = d3_geo_stereographic;
  function d3_geo_azimuthal(scale, angle) {
    function azimuthal(λ, φ) {
      var cosλ = Math.cos(λ), cosφ = Math.cos(φ), k = scale(cosλ * cosφ);
      return [ k * cosφ * Math.sin(λ), k * Math.sin(φ) ];
    }
    azimuthal.invert = function(x, y) {
      var ρ = Math.sqrt(x * x + y * y), c = angle(ρ), sinc = Math.sin(c), cosc = Math.cos(c);
      return [ Math.atan2(x * sinc, ρ * cosc), Math.asin(ρ && y * sinc / ρ) ];
    };
    return azimuthal;
  }
  d3.geom = {};
  d3.geom.hull = function(vertices) {
    if (vertices.length < 3) return [];
    var len = vertices.length, plen = len - 1, points = [], stack = [], i, j, h = 0, x1, y1, x2, y2, u, v, a, sp;
    for (i = 1; i < len; ++i) {
      if (vertices[i][1] < vertices[h][1]) {
        h = i;
      } else if (vertices[i][1] == vertices[h][1]) {
        h = vertices[i][0] < vertices[h][0] ? i : h;
      }
    }
    for (i = 0; i < len; ++i) {
      if (i === h) continue;
      y1 = vertices[i][1] - vertices[h][1];
      x1 = vertices[i][0] - vertices[h][0];
      points.push({
        angle: Math.atan2(y1, x1),
        index: i
      });
    }
    points.sort(function(a, b) {
      return a.angle - b.angle;
    });
    a = points[0].angle;
    v = points[0].index;
    u = 0;
    for (i = 1; i < plen; ++i) {
      j = points[i].index;
      if (a == points[i].angle) {
        x1 = vertices[v][0] - vertices[h][0];
        y1 = vertices[v][1] - vertices[h][1];
        x2 = vertices[j][0] - vertices[h][0];
        y2 = vertices[j][1] - vertices[h][1];
        if (x1 * x1 + y1 * y1 >= x2 * x2 + y2 * y2) {
          points[i].index = -1;
        } else {
          points[u].index = -1;
          a = points[i].angle;
          u = i;
          v = j;
        }
      } else {
        a = points[i].angle;
        u = i;
        v = j;
      }
    }
    stack.push(h);
    for (i = 0, j = 0; i < 2; ++j) {
      if (points[j].index !== -1) {
        stack.push(points[j].index);
        i++;
      }
    }
    sp = stack.length;
    for (;j < plen; ++j) {
      if (points[j].index === -1) continue;
      while (!d3_geom_hullCCW(stack[sp - 2], stack[sp - 1], points[j].index, vertices)) {
        --sp;
      }
      stack[sp++] = points[j].index;
    }
    var poly = [];
    for (i = 0; i < sp; ++i) {
      poly.push(vertices[stack[i]]);
    }
    return poly;
  };
  function d3_geom_hullCCW(i1, i2, i3, v) {
    var t, a, b, c, d, e, f;
    t = v[i1];
    a = t[0];
    b = t[1];
    t = v[i2];
    c = t[0];
    d = t[1];
    t = v[i3];
    e = t[0];
    f = t[1];
    return (f - b) * (c - a) - (d - b) * (e - a) > 0;
  }
  d3.geom.polygon = function(coordinates) {
    coordinates.area = function() {
      var i = 0, n = coordinates.length, area = coordinates[n - 1][1] * coordinates[0][0] - coordinates[n - 1][0] * coordinates[0][1];
      while (++i < n) {
        area += coordinates[i - 1][1] * coordinates[i][0] - coordinates[i - 1][0] * coordinates[i][1];
      }
      return area * .5;
    };
    coordinates.centroid = function(k) {
      var i = -1, n = coordinates.length, x = 0, y = 0, a, b = coordinates[n - 1], c;
      if (!arguments.length) k = -1 / (6 * coordinates.area());
      while (++i < n) {
        a = b;
        b = coordinates[i];
        c = a[0] * b[1] - b[0] * a[1];
        x += (a[0] + b[0]) * c;
        y += (a[1] + b[1]) * c;
      }
      return [ x * k, y * k ];
    };
    coordinates.clip = function(subject) {
      var input, i = -1, n = coordinates.length, j, m, a = coordinates[n - 1], b, c, d;
      while (++i < n) {
        input = subject.slice();
        subject.length = 0;
        b = coordinates[i];
        c = input[(m = input.length) - 1];
        j = -1;
        while (++j < m) {
          d = input[j];
          if (d3_geom_polygonInside(d, a, b)) {
            if (!d3_geom_polygonInside(c, a, b)) {
              subject.push(d3_geom_polygonIntersect(c, d, a, b));
            }
            subject.push(d);
          } else if (d3_geom_polygonInside(c, a, b)) {
            subject.push(d3_geom_polygonIntersect(c, d, a, b));
          }
          c = d;
        }
        a = b;
      }
      return subject;
    };
    return coordinates;
  };
  function d3_geom_polygonInside(p, a, b) {
    return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]);
  }
  function d3_geom_polygonIntersect(c, d, a, b) {
    var x1 = c[0], x3 = a[0], x21 = d[0] - x1, x43 = b[0] - x3, y1 = c[1], y3 = a[1], y21 = d[1] - y1, y43 = b[1] - y3, ua = (x43 * (y1 - y3) - y43 * (x1 - x3)) / (y43 * x21 - x43 * y21);
    return [ x1 + ua * x21, y1 + ua * y21 ];
  }
  d3.geom.voronoi = function(vertices) {
    var polygons = vertices.map(function() {
      return [];
    }), Z = 1e6;
    d3_voronoi_tessellate(vertices, function(e) {
      var s1, s2, x1, x2, y1, y2;
      if (e.a === 1 && e.b >= 0) {
        s1 = e.ep.r;
        s2 = e.ep.l;
      } else {
        s1 = e.ep.l;
        s2 = e.ep.r;
      }
      if (e.a === 1) {
        y1 = s1 ? s1.y : -Z;
        x1 = e.c - e.b * y1;
        y2 = s2 ? s2.y : Z;
        x2 = e.c - e.b * y2;
      } else {
        x1 = s1 ? s1.x : -Z;
        y1 = e.c - e.a * x1;
        x2 = s2 ? s2.x : Z;
        y2 = e.c - e.a * x2;
      }
      var v1 = [ x1, y1 ], v2 = [ x2, y2 ];
      polygons[e.region.l.index].push(v1, v2);
      polygons[e.region.r.index].push(v1, v2);
    });
    polygons = polygons.map(function(polygon, i) {
      var cx = vertices[i][0], cy = vertices[i][1], angle = polygon.map(function(v) {
        return Math.atan2(v[0] - cx, v[1] - cy);
      }), order = d3.range(polygon.length).sort(function(a, b) {
        return angle[a] - angle[b];
      });
      return order.filter(function(d, i) {
        return !i || angle[d] - angle[order[i - 1]] > ε;
      }).map(function(d) {
        return polygon[d];
      });
    });
    polygons.forEach(function(polygon, i) {
      var n = polygon.length;
      if (!n) return polygon.push([ -Z, -Z ], [ -Z, Z ], [ Z, Z ], [ Z, -Z ]);
      if (n > 2) return;
      var p0 = vertices[i], p1 = polygon[0], p2 = polygon[1], x0 = p0[0], y0 = p0[1], x1 = p1[0], y1 = p1[1], x2 = p2[0], y2 = p2[1], dx = Math.abs(x2 - x1), dy = y2 - y1;
      if (Math.abs(dy) < ε) {
        var y = y0 < y1 ? -Z : Z;
        polygon.push([ -Z, y ], [ Z, y ]);
      } else if (dx < ε) {
        var x = x0 < x1 ? -Z : Z;
        polygon.push([ x, -Z ], [ x, Z ]);
      } else {
        var y = (x2 - x1) * (y1 - y0) < (x1 - x0) * (y2 - y1) ? Z : -Z, z = Math.abs(dy) - dx;
        if (Math.abs(z) < ε) {
          polygon.push([ dy < 0 ? y : -y, y ]);
        } else {
          if (z > 0) y *= -1;
          polygon.push([ -Z, y ], [ Z, y ]);
        }
      }
    });
    return polygons;
  };
  var d3_voronoi_opposite = {
    l: "r",
    r: "l"
  };
  function d3_voronoi_tessellate(vertices, callback) {
    var Sites = {
      list: vertices.map(function(v, i) {
        return {
          index: i,
          x: v[0],
          y: v[1]
        };
      }).sort(function(a, b) {
        return a.y < b.y ? -1 : a.y > b.y ? 1 : a.x < b.x ? -1 : a.x > b.x ? 1 : 0;
      }),
      bottomSite: null
    };
    var EdgeList = {
      list: [],
      leftEnd: null,
      rightEnd: null,
      init: function() {
        EdgeList.leftEnd = EdgeList.createHalfEdge(null, "l");
        EdgeList.rightEnd = EdgeList.createHalfEdge(null, "l");
        EdgeList.leftEnd.r = EdgeList.rightEnd;
        EdgeList.rightEnd.l = EdgeList.leftEnd;
        EdgeList.list.unshift(EdgeList.leftEnd, EdgeList.rightEnd);
      },
      createHalfEdge: function(edge, side) {
        return {
          edge: edge,
          side: side,
          vertex: null,
          l: null,
          r: null
        };
      },
      insert: function(lb, he) {
        he.l = lb;
        he.r = lb.r;
        lb.r.l = he;
        lb.r = he;
      },
      leftBound: function(p) {
        var he = EdgeList.leftEnd;
        do {
          he = he.r;
        } while (he != EdgeList.rightEnd && Geom.rightOf(he, p));
        he = he.l;
        return he;
      },
      del: function(he) {
        he.l.r = he.r;
        he.r.l = he.l;
        he.edge = null;
      },
      right: function(he) {
        return he.r;
      },
      left: function(he) {
        return he.l;
      },
      leftRegion: function(he) {
        return he.edge == null ? Sites.bottomSite : he.edge.region[he.side];
      },
      rightRegion: function(he) {
        return he.edge == null ? Sites.bottomSite : he.edge.region[d3_voronoi_opposite[he.side]];
      }
    };
    var Geom = {
      bisect: function(s1, s2) {
        var newEdge = {
          region: {
            l: s1,
            r: s2
          },
          ep: {
            l: null,
            r: null
          }
        };
        var dx = s2.x - s1.x, dy = s2.y - s1.y, adx = dx > 0 ? dx : -dx, ady = dy > 0 ? dy : -dy;
        newEdge.c = s1.x * dx + s1.y * dy + (dx * dx + dy * dy) * .5;
        if (adx > ady) {
          newEdge.a = 1;
          newEdge.b = dy / dx;
          newEdge.c /= dx;
        } else {
          newEdge.b = 1;
          newEdge.a = dx / dy;
          newEdge.c /= dy;
        }
        return newEdge;
      },
      intersect: function(el1, el2) {
        var e1 = el1.edge, e2 = el2.edge;
        if (!e1 || !e2 || e1.region.r == e2.region.r) {
          return null;
        }
        var d = e1.a * e2.b - e1.b * e2.a;
        if (Math.abs(d) < 1e-10) {
          return null;
        }
        var xint = (e1.c * e2.b - e2.c * e1.b) / d, yint = (e2.c * e1.a - e1.c * e2.a) / d, e1r = e1.region.r, e2r = e2.region.r, el, e;
        if (e1r.y < e2r.y || e1r.y == e2r.y && e1r.x < e2r.x) {
          el = el1;
          e = e1;
        } else {
          el = el2;
          e = e2;
        }
        var rightOfSite = xint >= e.region.r.x;
        if (rightOfSite && el.side === "l" || !rightOfSite && el.side === "r") {
          return null;
        }
        return {
          x: xint,
          y: yint
        };
      },
      rightOf: function(he, p) {
        var e = he.edge, topsite = e.region.r, rightOfSite = p.x > topsite.x;
        if (rightOfSite && he.side === "l") {
          return 1;
        }
        if (!rightOfSite && he.side === "r") {
          return 0;
        }
        if (e.a === 1) {
          var dyp = p.y - topsite.y, dxp = p.x - topsite.x, fast = 0, above = 0;
          if (!rightOfSite && e.b < 0 || rightOfSite && e.b >= 0) {
            above = fast = dyp >= e.b * dxp;
          } else {
            above = p.x + p.y * e.b > e.c;
            if (e.b < 0) {
              above = !above;
            }
            if (!above) {
              fast = 1;
            }
          }
          if (!fast) {
            var dxs = topsite.x - e.region.l.x;
            above = e.b * (dxp * dxp - dyp * dyp) < dxs * dyp * (1 + 2 * dxp / dxs + e.b * e.b);
            if (e.b < 0) {
              above = !above;
            }
          }
        } else {
          var yl = e.c - e.a * p.x, t1 = p.y - yl, t2 = p.x - topsite.x, t3 = yl - topsite.y;
          above = t1 * t1 > t2 * t2 + t3 * t3;
        }
        return he.side === "l" ? above : !above;
      },
      endPoint: function(edge, side, site) {
        edge.ep[side] = site;
        if (!edge.ep[d3_voronoi_opposite[side]]) return;
        callback(edge);
      },
      distance: function(s, t) {
        var dx = s.x - t.x, dy = s.y - t.y;
        return Math.sqrt(dx * dx + dy * dy);
      }
    };
    var EventQueue = {
      list: [],
      insert: function(he, site, offset) {
        he.vertex = site;
        he.ystar = site.y + offset;
        for (var i = 0, list = EventQueue.list, l = list.length; i < l; i++) {
          var next = list[i];
          if (he.ystar > next.ystar || he.ystar == next.ystar && site.x > next.vertex.x) {
            continue;
          } else {
            break;
          }
        }
        list.splice(i, 0, he);
      },
      del: function(he) {
        for (var i = 0, ls = EventQueue.list, l = ls.length; i < l && ls[i] != he; ++i) {}
        ls.splice(i, 1);
      },
      empty: function() {
        return EventQueue.list.length === 0;
      },
      nextEvent: function(he) {
        for (var i = 0, ls = EventQueue.list, l = ls.length; i < l; ++i) {
          if (ls[i] == he) return ls[i + 1];
        }
        return null;
      },
      min: function() {
        var elem = EventQueue.list[0];
        return {
          x: elem.vertex.x,
          y: elem.ystar
        };
      },
      extractMin: function() {
        return EventQueue.list.shift();
      }
    };
    EdgeList.init();
    Sites.bottomSite = Sites.list.shift();
    var newSite = Sites.list.shift(), newIntStar;
    var lbnd, rbnd, llbnd, rrbnd, bisector;
    var bot, top, temp, p, v;
    var e, pm;
    while (true) {
      if (!EventQueue.empty()) {
        newIntStar = EventQueue.min();
      }
      if (newSite && (EventQueue.empty() || newSite.y < newIntStar.y || newSite.y == newIntStar.y && newSite.x < newIntStar.x)) {
        lbnd = EdgeList.leftBound(newSite);
        rbnd = EdgeList.right(lbnd);
        bot = EdgeList.rightRegion(lbnd);
        e = Geom.bisect(bot, newSite);
        bisector = EdgeList.createHalfEdge(e, "l");
        EdgeList.insert(lbnd, bisector);
        p = Geom.intersect(lbnd, bisector);
        if (p) {
          EventQueue.del(lbnd);
          EventQueue.insert(lbnd, p, Geom.distance(p, newSite));
        }
        lbnd = bisector;
        bisector = EdgeList.createHalfEdge(e, "r");
        EdgeList.insert(lbnd, bisector);
        p = Geom.intersect(bisector, rbnd);
        if (p) {
          EventQueue.insert(bisector, p, Geom.distance(p, newSite));
        }
        newSite = Sites.list.shift();
      } else if (!EventQueue.empty()) {
        lbnd = EventQueue.extractMin();
        llbnd = EdgeList.left(lbnd);
        rbnd = EdgeList.right(lbnd);
        rrbnd = EdgeList.right(rbnd);
        bot = EdgeList.leftRegion(lbnd);
        top = EdgeList.rightRegion(rbnd);
        v = lbnd.vertex;
        Geom.endPoint(lbnd.edge, lbnd.side, v);
        Geom.endPoint(rbnd.edge, rbnd.side, v);
        EdgeList.del(lbnd);
        EventQueue.del(rbnd);
        EdgeList.del(rbnd);
        pm = "l";
        if (bot.y > top.y) {
          temp = bot;
          bot = top;
          top = temp;
          pm = "r";
        }
        e = Geom.bisect(bot, top);
        bisector = EdgeList.createHalfEdge(e, pm);
        EdgeList.insert(llbnd, bisector);
        Geom.endPoint(e, d3_voronoi_opposite[pm], v);
        p = Geom.intersect(llbnd, bisector);
        if (p) {
          EventQueue.del(llbnd);
          EventQueue.insert(llbnd, p, Geom.distance(p, bot));
        }
        p = Geom.intersect(bisector, rrbnd);
        if (p) {
          EventQueue.insert(bisector, p, Geom.distance(p, bot));
        }
      } else {
        break;
      }
    }
    for (lbnd = EdgeList.right(EdgeList.leftEnd); lbnd != EdgeList.rightEnd; lbnd = EdgeList.right(lbnd)) {
      callback(lbnd.edge);
    }
  }
  d3.geom.delaunay = function(vertices) {
    var edges = vertices.map(function() {
      return [];
    }), triangles = [];
    d3_voronoi_tessellate(vertices, function(e) {
      edges[e.region.l.index].push(vertices[e.region.r.index]);
    });
    edges.forEach(function(edge, i) {
      var v = vertices[i], cx = v[0], cy = v[1];
      edge.forEach(function(v) {
        v.angle = Math.atan2(v[0] - cx, v[1] - cy);
      });
      edge.sort(function(a, b) {
        return a.angle - b.angle;
      });
      for (var j = 0, m = edge.length - 1; j < m; j++) {
        triangles.push([ v, edge[j], edge[j + 1] ]);
      }
    });
    return triangles;
  };
  d3.geom.quadtree = function(points, x1, y1, x2, y2) {
    var p, i = -1, n = points.length;
    if (arguments.length < 5) {
      if (arguments.length === 3) {
        y2 = y1;
        x2 = x1;
        y1 = x1 = 0;
      } else {
        x1 = y1 = Infinity;
        x2 = y2 = -Infinity;
        while (++i < n) {
          p = points[i];
          if (p.x < x1) x1 = p.x;
          if (p.y < y1) y1 = p.y;
          if (p.x > x2) x2 = p.x;
          if (p.y > y2) y2 = p.y;
        }
      }
    }
    var dx = x2 - x1, dy = y2 - y1;
    if (dx > dy) y2 = y1 + dx; else x2 = x1 + dy;
    function insert(n, p, x1, y1, x2, y2) {
      if (isNaN(p.x) || isNaN(p.y)) return;
      if (n.leaf) {
        var v = n.point;
        if (v) {
          if (Math.abs(v.x - p.x) + Math.abs(v.y - p.y) < .01) {
            insertChild(n, p, x1, y1, x2, y2);
          } else {
            n.point = null;
            insertChild(n, v, x1, y1, x2, y2);
            insertChild(n, p, x1, y1, x2, y2);
          }
        } else {
          n.point = p;
        }
      } else {
        insertChild(n, p, x1, y1, x2, y2);
      }
    }
    function insertChild(n, p, x1, y1, x2, y2) {
      var sx = (x1 + x2) * .5, sy = (y1 + y2) * .5, right = p.x >= sx, bottom = p.y >= sy, i = (bottom << 1) + right;
      n.leaf = false;
      n = n.nodes[i] || (n.nodes[i] = d3_geom_quadtreeNode());
      if (right) x1 = sx; else x2 = sx;
      if (bottom) y1 = sy; else y2 = sy;
      insert(n, p, x1, y1, x2, y2);
    }
    var root = d3_geom_quadtreeNode();
    root.add = function(p) {
      insert(root, p, x1, y1, x2, y2);
    };
    root.visit = function(f) {
      d3_geom_quadtreeVisit(f, root, x1, y1, x2, y2);
    };
    points.forEach(root.add);
    return root;
  };
  function d3_geom_quadtreeNode() {
    return {
      leaf: true,
      nodes: [],
      point: null
    };
  }
  function d3_geom_quadtreeVisit(f, node, x1, y1, x2, y2) {
    if (!f(node, x1, y1, x2, y2)) {
      var sx = (x1 + x2) * .5, sy = (y1 + y2) * .5, children = node.nodes;
      if (children[0]) d3_geom_quadtreeVisit(f, children[0], x1, y1, sx, sy);
      if (children[1]) d3_geom_quadtreeVisit(f, children[1], sx, y1, x2, sy);
      if (children[2]) d3_geom_quadtreeVisit(f, children[2], x1, sy, sx, y2);
      if (children[3]) d3_geom_quadtreeVisit(f, children[3], sx, sy, x2, y2);
    }
  }
  d3.time = {};
  var d3_time = Date, d3_time_daySymbols = [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ];
  function d3_time_utc() {
    this._ = new Date(arguments.length > 1 ? Date.UTC.apply(this, arguments) : arguments[0]);
  }
  d3_time_utc.prototype = {
    getDate: function() {
      return this._.getUTCDate();
    },
    getDay: function() {
      return this._.getUTCDay();
    },
    getFullYear: function() {
      return this._.getUTCFullYear();
    },
    getHours: function() {
      return this._.getUTCHours();
    },
    getMilliseconds: function() {
      return this._.getUTCMilliseconds();
    },
    getMinutes: function() {
      return this._.getUTCMinutes();
    },
    getMonth: function() {
      return this._.getUTCMonth();
    },
    getSeconds: function() {
      return this._.getUTCSeconds();
    },
    getTime: function() {
      return this._.getTime();
    },
    getTimezoneOffset: function() {
      return 0;
    },
    valueOf: function() {
      return this._.valueOf();
    },
    setDate: function() {
      d3_time_prototype.setUTCDate.apply(this._, arguments);
    },
    setDay: function() {
      d3_time_prototype.setUTCDay.apply(this._, arguments);
    },
    setFullYear: function() {
      d3_time_prototype.setUTCFullYear.apply(this._, arguments);
    },
    setHours: function() {
      d3_time_prototype.setUTCHours.apply(this._, arguments);
    },
    setMilliseconds: function() {
      d3_time_prototype.setUTCMilliseconds.apply(this._, arguments);
    },
    setMinutes: function() {
      d3_time_prototype.setUTCMinutes.apply(this._, arguments);
    },
    setMonth: function() {
      d3_time_prototype.setUTCMonth.apply(this._, arguments);
    },
    setSeconds: function() {
      d3_time_prototype.setUTCSeconds.apply(this._, arguments);
    },
    setTime: function() {
      d3_time_prototype.setTime.apply(this._, arguments);
    }
  };
  var d3_time_prototype = Date.prototype;
  var d3_time_formatDateTime = "%a %b %e %X %Y", d3_time_formatDate = "%m/%d/%Y", d3_time_formatTime = "%H:%M:%S";
  var d3_time_days = [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ], d3_time_dayAbbreviations = [ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" ], d3_time_months = [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ], d3_time_monthAbbreviations = [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ];
  d3.time.format = function(template) {
    var n = template.length;
    function format(date) {
      var string = [], i = -1, j = 0, c, p, f;
      while (++i < n) {
        if (template.charCodeAt(i) === 37) {
          string.push(template.substring(j, i));
          if ((p = d3_time_formatPads[c = template.charAt(++i)]) != null) c = template.charAt(++i);
          if (f = d3_time_formats[c]) c = f(date, p == null ? c === "e" ? " " : "0" : p);
          string.push(c);
          j = i + 1;
        }
      }
      string.push(template.substring(j, i));
      return string.join("");
    }
    format.parse = function(string) {
      var d = {
        y: 1900,
        m: 0,
        d: 1,
        H: 0,
        M: 0,
        S: 0,
        L: 0
      }, i = d3_time_parse(d, template, string, 0);
      if (i != string.length) return null;
      if ("p" in d) d.H = d.H % 12 + d.p * 12;
      var date = new d3_time();
      date.setFullYear(d.y, d.m, d.d);
      date.setHours(d.H, d.M, d.S, d.L);
      return date;
    };
    format.toString = function() {
      return template;
    };
    return format;
  };
  function d3_time_parse(date, template, string, j) {
    var c, p, i = 0, n = template.length, m = string.length;
    while (i < n) {
      if (j >= m) return -1;
      c = template.charCodeAt(i++);
      if (c === 37) {
        p = d3_time_parsers[template.charAt(i++)];
        if (!p || (j = p(date, string, j)) < 0) return -1;
      } else if (c != string.charCodeAt(j++)) {
        return -1;
      }
    }
    return j;
  }
  function d3_time_formatRe(names) {
    return new RegExp("^(?:" + names.map(d3.requote).join("|") + ")", "i");
  }
  function d3_time_formatLookup(names) {
    var map = new d3_Map(), i = -1, n = names.length;
    while (++i < n) map.set(names[i].toLowerCase(), i);
    return map;
  }
  function d3_time_formatPad(value, fill, width) {
    value += "";
    var length = value.length;
    return length < width ? new Array(width - length + 1).join(fill) + value : value;
  }
  var d3_time_dayRe = d3_time_formatRe(d3_time_days), d3_time_dayAbbrevRe = d3_time_formatRe(d3_time_dayAbbreviations), d3_time_monthRe = d3_time_formatRe(d3_time_months), d3_time_monthLookup = d3_time_formatLookup(d3_time_months), d3_time_monthAbbrevRe = d3_time_formatRe(d3_time_monthAbbreviations), d3_time_monthAbbrevLookup = d3_time_formatLookup(d3_time_monthAbbreviations);
  var d3_time_formatPads = {
    "-": "",
    _: " ",
    "0": "0"
  };
  var d3_time_formats = {
    a: function(d) {
      return d3_time_dayAbbreviations[d.getDay()];
    },
    A: function(d) {
      return d3_time_days[d.getDay()];
    },
    b: function(d) {
      return d3_time_monthAbbreviations[d.getMonth()];
    },
    B: function(d) {
      return d3_time_months[d.getMonth()];
    },
    c: d3.time.format(d3_time_formatDateTime),
    d: function(d, p) {
      return d3_time_formatPad(d.getDate(), p, 2);
    },
    e: function(d, p) {
      return d3_time_formatPad(d.getDate(), p, 2);
    },
    H: function(d, p) {
      return d3_time_formatPad(d.getHours(), p, 2);
    },
    I: function(d, p) {
      return d3_time_formatPad(d.getHours() % 12 || 12, p, 2);
    },
    j: function(d, p) {
      return d3_time_formatPad(1 + d3.time.dayOfYear(d), p, 3);
    },
    L: function(d, p) {
      return d3_time_formatPad(d.getMilliseconds(), p, 3);
    },
    m: function(d, p) {
      return d3_time_formatPad(d.getMonth() + 1, p, 2);
    },
    M: function(d, p) {
      return d3_time_formatPad(d.getMinutes(), p, 2);
    },
    p: function(d) {
      return d.getHours() >= 12 ? "PM" : "AM";
    },
    S: function(d, p) {
      return d3_time_formatPad(d.getSeconds(), p, 2);
    },
    U: function(d, p) {
      return d3_time_formatPad(d3.time.sundayOfYear(d), p, 2);
    },
    w: function(d) {
      return d.getDay();
    },
    W: function(d, p) {
      return d3_time_formatPad(d3.time.mondayOfYear(d), p, 2);
    },
    x: d3.time.format(d3_time_formatDate),
    X: d3.time.format(d3_time_formatTime),
    y: function(d, p) {
      return d3_time_formatPad(d.getFullYear() % 100, p, 2);
    },
    Y: function(d, p) {
      return d3_time_formatPad(d.getFullYear() % 1e4, p, 4);
    },
    Z: d3_time_zone,
    "%": function() {
      return "%";
    }
  };
  var d3_time_parsers = {
    a: d3_time_parseWeekdayAbbrev,
    A: d3_time_parseWeekday,
    b: d3_time_parseMonthAbbrev,
    B: d3_time_parseMonth,
    c: d3_time_parseLocaleFull,
    d: d3_time_parseDay,
    e: d3_time_parseDay,
    H: d3_time_parseHour24,
    I: d3_time_parseHour24,
    L: d3_time_parseMilliseconds,
    m: d3_time_parseMonthNumber,
    M: d3_time_parseMinutes,
    p: d3_time_parseAmPm,
    S: d3_time_parseSeconds,
    x: d3_time_parseLocaleDate,
    X: d3_time_parseLocaleTime,
    y: d3_time_parseYear,
    Y: d3_time_parseFullYear
  };
  function d3_time_parseWeekdayAbbrev(date, string, i) {
    d3_time_dayAbbrevRe.lastIndex = 0;
    var n = d3_time_dayAbbrevRe.exec(string.substring(i));
    return n ? i += n[0].length : -1;
  }
  function d3_time_parseWeekday(date, string, i) {
    d3_time_dayRe.lastIndex = 0;
    var n = d3_time_dayRe.exec(string.substring(i));
    return n ? i += n[0].length : -1;
  }
  function d3_time_parseMonthAbbrev(date, string, i) {
    d3_time_monthAbbrevRe.lastIndex = 0;
    var n = d3_time_monthAbbrevRe.exec(string.substring(i));
    return n ? (date.m = d3_time_monthAbbrevLookup.get(n[0].toLowerCase()), i += n[0].length) : -1;
  }
  function d3_time_parseMonth(date, string, i) {
    d3_time_monthRe.lastIndex = 0;
    var n = d3_time_monthRe.exec(string.substring(i));
    return n ? (date.m = d3_time_monthLookup.get(n[0].toLowerCase()), i += n[0].length) : -1;
  }
  function d3_time_parseLocaleFull(date, string, i) {
    return d3_time_parse(date, d3_time_formats.c.toString(), string, i);
  }
  function d3_time_parseLocaleDate(date, string, i) {
    return d3_time_parse(date, d3_time_formats.x.toString(), string, i);
  }
  function d3_time_parseLocaleTime(date, string, i) {
    return d3_time_parse(date, d3_time_formats.X.toString(), string, i);
  }
  function d3_time_parseFullYear(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.substring(i, i + 4));
    return n ? (date.y = +n[0], i += n[0].length) : -1;
  }
  function d3_time_parseYear(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.substring(i, i + 2));
    return n ? (date.y = d3_time_expandYear(+n[0]), i += n[0].length) : -1;
  }
  function d3_time_expandYear(d) {
    return d + (d > 68 ? 1900 : 2e3);
  }
  function d3_time_parseMonthNumber(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.substring(i, i + 2));
    return n ? (date.m = n[0] - 1, i += n[0].length) : -1;
  }
  function d3_time_parseDay(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.substring(i, i + 2));
    return n ? (date.d = +n[0], i += n[0].length) : -1;
  }
  function d3_time_parseHour24(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.substring(i, i + 2));
    return n ? (date.H = +n[0], i += n[0].length) : -1;
  }
  function d3_time_parseMinutes(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.substring(i, i + 2));
    return n ? (date.M = +n[0], i += n[0].length) : -1;
  }
  function d3_time_parseSeconds(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.substring(i, i + 2));
    return n ? (date.S = +n[0], i += n[0].length) : -1;
  }
  function d3_time_parseMilliseconds(date, string, i) {
    d3_time_numberRe.lastIndex = 0;
    var n = d3_time_numberRe.exec(string.substring(i, i + 3));
    return n ? (date.L = +n[0], i += n[0].length) : -1;
  }
  var d3_time_numberRe = /^\s*\d+/;
  function d3_time_parseAmPm(date, string, i) {
    var n = d3_time_amPmLookup.get(string.substring(i, i += 2).toLowerCase());
    return n == null ? -1 : (date.p = n, i);
  }
  var d3_time_amPmLookup = d3.map({
    am: 0,
    pm: 1
  });
  function d3_time_zone(d) {
    var z = d.getTimezoneOffset(), zs = z > 0 ? "-" : "+", zh = ~~(Math.abs(z) / 60), zm = Math.abs(z) % 60;
    return zs + d3_time_formatPad(zh, "0", 2) + d3_time_formatPad(zm, "0", 2);
  }
  d3.time.format.utc = function(template) {
    var local = d3.time.format(template);
    function format(date) {
      try {
        d3_time = d3_time_utc;
        var utc = new d3_time();
        utc._ = date;
        return local(utc);
      } finally {
        d3_time = Date;
      }
    }
    format.parse = function(string) {
      try {
        d3_time = d3_time_utc;
        var date = local.parse(string);
        return date && date._;
      } finally {
        d3_time = Date;
      }
    };
    format.toString = local.toString;
    return format;
  };
  var d3_time_formatIso = d3.time.format.utc("%Y-%m-%dT%H:%M:%S.%LZ");
  d3.time.format.iso = Date.prototype.toISOString ? d3_time_formatIsoNative : d3_time_formatIso;
  function d3_time_formatIsoNative(date) {
    return date.toISOString();
  }
  d3_time_formatIsoNative.parse = function(string) {
    var date = new Date(string);
    return isNaN(date) ? null : date;
  };
  d3_time_formatIsoNative.toString = d3_time_formatIso.toString;
  function d3_time_interval(local, step, number) {
    function round(date) {
      var d0 = local(date), d1 = offset(d0, 1);
      return date - d0 < d1 - date ? d0 : d1;
    }
    function ceil(date) {
      step(date = local(new d3_time(date - 1)), 1);
      return date;
    }
    function offset(date, k) {
      step(date = new d3_time(+date), k);
      return date;
    }
    function range(t0, t1, dt) {
      var time = ceil(t0), times = [];
      if (dt > 1) {
        while (time < t1) {
          if (!(number(time) % dt)) times.push(new Date(+time));
          step(time, 1);
        }
      } else {
        while (time < t1) times.push(new Date(+time)), step(time, 1);
      }
      return times;
    }
    function range_utc(t0, t1, dt) {
      try {
        d3_time = d3_time_utc;
        var utc = new d3_time_utc();
        utc._ = t0;
        return range(utc, t1, dt);
      } finally {
        d3_time = Date;
      }
    }
    local.floor = local;
    local.round = round;
    local.ceil = ceil;
    local.offset = offset;
    local.range = range;
    var utc = local.utc = d3_time_interval_utc(local);
    utc.floor = utc;
    utc.round = d3_time_interval_utc(round);
    utc.ceil = d3_time_interval_utc(ceil);
    utc.offset = d3_time_interval_utc(offset);
    utc.range = range_utc;
    return local;
  }
  function d3_time_interval_utc(method) {
    return function(date, k) {
      try {
        d3_time = d3_time_utc;
        var utc = new d3_time_utc();
        utc._ = date;
        return method(utc, k)._;
      } finally {
        d3_time = Date;
      }
    };
  }
  d3.time.second = d3_time_interval(function(date) {
    return new d3_time(Math.floor(date / 1e3) * 1e3);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 1e3);
  }, function(date) {
    return date.getSeconds();
  });
  d3.time.seconds = d3.time.second.range;
  d3.time.seconds.utc = d3.time.second.utc.range;
  d3.time.minute = d3_time_interval(function(date) {
    return new d3_time(Math.floor(date / 6e4) * 6e4);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 6e4);
  }, function(date) {
    return date.getMinutes();
  });
  d3.time.minutes = d3.time.minute.range;
  d3.time.minutes.utc = d3.time.minute.utc.range;
  d3.time.hour = d3_time_interval(function(date) {
    var timezone = date.getTimezoneOffset() / 60;
    return new d3_time((Math.floor(date / 36e5 - timezone) + timezone) * 36e5);
  }, function(date, offset) {
    date.setTime(date.getTime() + Math.floor(offset) * 36e5);
  }, function(date) {
    return date.getHours();
  });
  d3.time.hours = d3.time.hour.range;
  d3.time.hours.utc = d3.time.hour.utc.range;
  d3.time.day = d3_time_interval(function(date) {
    var day = new d3_time(1970, 0);
    day.setFullYear(date.getFullYear(), date.getMonth(), date.getDate());
    return day;
  }, function(date, offset) {
    date.setDate(date.getDate() + offset);
  }, function(date) {
    return date.getDate() - 1;
  });
  d3.time.days = d3.time.day.range;
  d3.time.days.utc = d3.time.day.utc.range;
  d3.time.dayOfYear = function(date) {
    var year = d3.time.year(date);
    return Math.floor((date - year - (date.getTimezoneOffset() - year.getTimezoneOffset()) * 6e4) / 864e5);
  };
  d3_time_daySymbols.forEach(function(day, i) {
    day = day.toLowerCase();
    i = 7 - i;
    var interval = d3.time[day] = d3_time_interval(function(date) {
      (date = d3.time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);
      return date;
    }, function(date, offset) {
      date.setDate(date.getDate() + Math.floor(offset) * 7);
    }, function(date) {
      var day = d3.time.year(date).getDay();
      return Math.floor((d3.time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);
    });
    d3.time[day + "s"] = interval.range;
    d3.time[day + "s"].utc = interval.utc.range;
    d3.time[day + "OfYear"] = function(date) {
      var day = d3.time.year(date).getDay();
      return Math.floor((d3.time.dayOfYear(date) + (day + i) % 7) / 7);
    };
  });
  d3.time.week = d3.time.sunday;
  d3.time.weeks = d3.time.sunday.range;
  d3.time.weeks.utc = d3.time.sunday.utc.range;
  d3.time.weekOfYear = d3.time.sundayOfYear;
  d3.time.month = d3_time_interval(function(date) {
    date = d3.time.day(date);
    date.setDate(1);
    return date;
  }, function(date, offset) {
    date.setMonth(date.getMonth() + offset);
  }, function(date) {
    return date.getMonth();
  });
  d3.time.months = d3.time.month.range;
  d3.time.months.utc = d3.time.month.utc.range;
  d3.time.year = d3_time_interval(function(date) {
    date = d3.time.day(date);
    date.setMonth(0, 1);
    return date;
  }, function(date, offset) {
    date.setFullYear(date.getFullYear() + offset);
  }, function(date) {
    return date.getFullYear();
  });
  d3.time.years = d3.time.year.range;
  d3.time.years.utc = d3.time.year.utc.range;
  function d3_time_scale(linear, methods, format) {
    function scale(x) {
      return linear(x);
    }
    scale.invert = function(x) {
      return d3_time_scaleDate(linear.invert(x));
    };
    scale.domain = function(x) {
      if (!arguments.length) return linear.domain().map(d3_time_scaleDate);
      linear.domain(x);
      return scale;
    };
    scale.nice = function(m) {
      return scale.domain(d3_scale_nice(scale.domain(), function() {
        return m;
      }));
    };
    scale.ticks = function(m, k) {
      var extent = d3_time_scaleExtent(scale.domain());
      if (typeof m !== "function") {
        var span = extent[1] - extent[0], target = span / m, i = d3.bisect(d3_time_scaleSteps, target);
        if (i == d3_time_scaleSteps.length) return methods.year(extent, m);
        if (!i) return linear.ticks(m).map(d3_time_scaleDate);
        if (Math.log(target / d3_time_scaleSteps[i - 1]) < Math.log(d3_time_scaleSteps[i] / target)) --i;
        m = methods[i];
        k = m[1];
        m = m[0].range;
      }
      return m(extent[0], new Date(+extent[1] + 1), k);
    };
    scale.tickFormat = function() {
      return format;
    };
    scale.copy = function() {
      return d3_time_scale(linear.copy(), methods, format);
    };
    return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
  }
  function d3_time_scaleExtent(domain) {
    var start = domain[0], stop = domain[domain.length - 1];
    return start < stop ? [ start, stop ] : [ stop, start ];
  }
  function d3_time_scaleDate(t) {
    return new Date(t);
  }
  function d3_time_scaleFormat(formats) {
    return function(date) {
      var i = formats.length - 1, f = formats[i];
      while (!f[1](date)) f = formats[--i];
      return f[0](date);
    };
  }
  function d3_time_scaleSetYear(y) {
    var d = new Date(y, 0, 1);
    d.setFullYear(y);
    return d;
  }
  function d3_time_scaleGetYear(d) {
    var y = d.getFullYear(), d0 = d3_time_scaleSetYear(y), d1 = d3_time_scaleSetYear(y + 1);
    return y + (d - d0) / (d1 - d0);
  }
  var d3_time_scaleSteps = [ 1e3, 5e3, 15e3, 3e4, 6e4, 3e5, 9e5, 18e5, 36e5, 108e5, 216e5, 432e5, 864e5, 1728e5, 6048e5, 2592e6, 7776e6, 31536e6 ];
  var d3_time_scaleLocalMethods = [ [ d3.time.second, 1 ], [ d3.time.second, 5 ], [ d3.time.second, 15 ], [ d3.time.second, 30 ], [ d3.time.minute, 1 ], [ d3.time.minute, 5 ], [ d3.time.minute, 15 ], [ d3.time.minute, 30 ], [ d3.time.hour, 1 ], [ d3.time.hour, 3 ], [ d3.time.hour, 6 ], [ d3.time.hour, 12 ], [ d3.time.day, 1 ], [ d3.time.day, 2 ], [ d3.time.week, 1 ], [ d3.time.month, 1 ], [ d3.time.month, 3 ], [ d3.time.year, 1 ] ];
  var d3_time_scaleLocalFormats = [ [ d3.time.format("%Y"), d3_true ], [ d3.time.format("%B"), function(d) {
    return d.getMonth();
  } ], [ d3.time.format("%b %d"), function(d) {
    return d.getDate() != 1;
  } ], [ d3.time.format("%a %d"), function(d) {
    return d.getDay() && d.getDate() != 1;
  } ], [ d3.time.format("%I %p"), function(d) {
    return d.getHours();
  } ], [ d3.time.format("%I:%M"), function(d) {
    return d.getMinutes();
  } ], [ d3.time.format(":%S"), function(d) {
    return d.getSeconds();
  } ], [ d3.time.format(".%L"), function(d) {
    return d.getMilliseconds();
  } ] ];
  var d3_time_scaleLinear = d3.scale.linear(), d3_time_scaleLocalFormat = d3_time_scaleFormat(d3_time_scaleLocalFormats);
  d3_time_scaleLocalMethods.year = function(extent, m) {
    return d3_time_scaleLinear.domain(extent.map(d3_time_scaleGetYear)).ticks(m).map(d3_time_scaleSetYear);
  };
  d3.time.scale = function() {
    return d3_time_scale(d3.scale.linear(), d3_time_scaleLocalMethods, d3_time_scaleLocalFormat);
  };
  var d3_time_scaleUTCMethods = d3_time_scaleLocalMethods.map(function(m) {
    return [ m[0].utc, m[1] ];
  });
  var d3_time_scaleUTCFormats = [ [ d3.time.format.utc("%Y"), d3_true ], [ d3.time.format.utc("%B"), function(d) {
    return d.getUTCMonth();
  } ], [ d3.time.format.utc("%b %d"), function(d) {
    return d.getUTCDate() != 1;
  } ], [ d3.time.format.utc("%a %d"), function(d) {
    return d.getUTCDay() && d.getUTCDate() != 1;
  } ], [ d3.time.format.utc("%I %p"), function(d) {
    return d.getUTCHours();
  } ], [ d3.time.format.utc("%I:%M"), function(d) {
    return d.getUTCMinutes();
  } ], [ d3.time.format.utc(":%S"), function(d) {
    return d.getUTCSeconds();
  } ], [ d3.time.format.utc(".%L"), function(d) {
    return d.getUTCMilliseconds();
  } ] ];
  var d3_time_scaleUTCFormat = d3_time_scaleFormat(d3_time_scaleUTCFormats);
  function d3_time_scaleUTCSetYear(y) {
    var d = new Date(Date.UTC(y, 0, 1));
    d.setUTCFullYear(y);
    return d;
  }
  function d3_time_scaleUTCGetYear(d) {
    var y = d.getUTCFullYear(), d0 = d3_time_scaleUTCSetYear(y), d1 = d3_time_scaleUTCSetYear(y + 1);
    return y + (d - d0) / (d1 - d0);
  }
  d3_time_scaleUTCMethods.year = function(extent, m) {
    return d3_time_scaleLinear.domain(extent.map(d3_time_scaleUTCGetYear)).ticks(m).map(d3_time_scaleUTCSetYear);
  };
  d3.time.scale.utc = function() {
    return d3_time_scale(d3.scale.linear(), d3_time_scaleUTCMethods, d3_time_scaleUTCFormat);
  };
  return d3;
 }();
diff --git a/dc.css b/dc.css
 .dc-chart {
    float: left;
 }

 .dc-chart rect.bar {
    stroke: none;
    fill: steelblue;
 }

 .dc-chart rect.bar:hover {
    fill-opacity: .5;
 }

 .dc-chart rect.stack1 {
    stroke: none;
    fill: red;
 }

 .dc-chart rect.stack2 {
    stroke: none;
    fill: green;
 }

 .dc-chart rect.deselected {
    stroke: none;
    fill: #ccc;
 }

 .dc-chart .sub .bar {
    stroke: none;
    fill: #ccc;
 }

 .dc-chart .pie-slice {
    fill: white;
    font-size: 12px;
    cursor: pointer;
 }

 .dc-chart .pie-slice :hover{
    fill-opacity: .8;
 }

 .dc-chart .selected path{
    stroke-width: 3;
    stroke: #ccc;
    fill-opacity: 1;
 }

 .dc-chart .deselected path{
    strok: none;
    fill-opacity: .5;
    fill: #ccc;
 }

 .dc-chart .axis path, .axis line {
    fill: none;
    stroke: #000;
    shape-rendering: crispEdges;
 }

 .dc-chart .axis text {
    font: 10px sans-serif;
 }

 .dc-chart .grid-line line {
    fill: none;
    stroke: #ccc;
    opacity: .5;
    shape-rendering: crispEdges;
 }

 .dc-chart .brush rect.background {
    z-index: -999;
 }

 .dc-chart .brush rect.extent {
    fill: steelblue;
    fill-opacity: .125;
 }

 .dc-chart .brush .resize path {
    fill: #eee;
    stroke: #666;
 }

 .dc-chart path.line {
    fill: none;
    stroke: steelblue;
    stroke-width: 1.5px;
 }

 .dc-chart circle.dot{
    fill: steelblue;
 }

 .dc-chart g.stack1 path.line {
    stroke: green;
 }

 .dc-chart g.stack1 circle.dot{
    fill: green;
 }

 .dc-chart g.stack2 path.line {
    stroke: red;
 }

 .dc-chart g.stack2 circle.dot{
    fill: red;
 }

 .dc-chart g.dc-tooltip path{
    fill: none;
    stroke: grey;
    stroke-opacity: .8;
 }

 .dc-chart path.area {
    fill: steelblue;
    fill-opacity: .3;
    stroke: none;
 }

 .dc-chart g.stack1 path.area {
    fill: green;
 }

 .dc-chart g.stack2 path.area {
    fill: red;
 }

 .dc-chart .node {
    font-size: 0.7em;
    cursor: pointer;
 }

 .dc-chart .node :hover{
    fill-opacity: .8;
 }

 .dc-chart .selected circle {
    stroke-width: 3;
    stroke: #ccc;
    fill-opacity: 1;
 }

 .dc-chart .deselected circle {
    strok: none;
    fill-opacity: .5;
    fill: #ccc;
 }

 .dc-chart .bubble {
    stroke: none;
    fill-opacity: 0.6;
 }

 .dc-data-count {
    float: right;
    margin-top: 15px;
    margin-right: 15px;
 }

 .dc-data-count .filter-count {
    color: #3182bd;
    font-weight: bold;
 }

 .dc-data-count .total-count {
    color: #3182bd;
    font-weight: bold;
 }

 .dc-data-table {}

 .dc-chart g.state{
    cursor: pointer;
 }

 .dc-chart g.state :hover{
    fill-opacity: .8;
 }

 .dc-chart g.state path {
    stroke: white;
 }

 .dc-chart g.selected path {
 }

 .dc-chart g.deselected path {
    fill: grey;
 }

 .dc-chart g.selected text {
 }

 .dc-chart g.deselected text {
    display: none;
 }

 .dc-chart g.county path {
    stroke: white;
    fill: none;
 }

 .dc-chart g.debug rect{
    fill: blue;
    fill-opacity: .2;
 }

 .dc-chart g.row rect {
    fill-opacity: 0.8;
    cursor: pointer;
 }

 .dc-chart g.row rect:hover {
    fill-opacity: 0.6;
 }

 .dc-chart g.row text {
    fill: black; /*modified from white by Eamonn O'Loughlin */
    font-size: 12px;
 }
diff --git a/dc.js b/dc.js
 /*
 *  Copyright 2012 the original author or authors.
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
 dc = {
    version: "1.3.0",
    constants : {
        CHART_CLASS: "dc-chart",
        DEBUG_GROUP_CLASS: "debug",
        STACK_CLASS: "stack",
        DESELECTED_CLASS: "deselected",
        SELECTED_CLASS: "selected",
        NODE_INDEX_NAME: "__index__",
        GROUP_INDEX_NAME: "__group_index__",
        DEFAULT_CHART_GROUP: "__default_chart_group__",
        EVENT_DELAY: 40,
        NEGLIGIBLE_NUMBER: 1e-10
    },
    _renderlet : null
 };

 dc.chartRegistry = function() {
    // chartGroup:string => charts:array
    var _chartMap = {};

    this.has = function(chart) {
        for (var e in _chartMap) {
            if (_chartMap[e].indexOf(chart) >= 0)
                return true;
        }
        return false;
    };

    function initializeChartGroup(group) {
        if (!group)
            group = dc.constants.DEFAULT_CHART_GROUP;

        if (!_chartMap[group])
            _chartMap[group] = [];

        return group;
    }

    this.register = function(chart, group) {
        group = initializeChartGroup(group);
        _chartMap[group].push(chart);
    };

    this.clear = function() {
        _chartMap = {};
    };

    this.list = function(group) {
        group = initializeChartGroup(group);
        return _chartMap[group];
    };

    return this;
 }();

 dc.registerChart = function(chart, group) {
    dc.chartRegistry.register(chart, group);
 };

 dc.hasChart = function(chart) {
    return dc.chartRegistry.has(chart);
 };

 dc.deregisterAllCharts = function() {
    dc.chartRegistry.clear();
 };

 dc.filterAll = function(group) {
    var charts = dc.chartRegistry.list(group);
    for (var i = 0; i < charts.length; ++i) {
        charts[i].filterAll();
    }
 };

 dc.renderAll = function(group) {
    var charts = dc.chartRegistry.list(group);
    for (var i = 0; i < charts.length; ++i) {
        charts[i].render();
    }

    if(dc._renderlet !== null)
        dc._renderlet(group);
 };

 dc.redrawAll = function(group) {
    var charts = dc.chartRegistry.list(group);
    for (var i = 0; i < charts.length; ++i) {
        charts[i].redraw();
    }

    if(dc._renderlet !== null)
        dc._renderlet(group);
 };

 dc.transition = function(selections, duration, callback) {
    if (duration <= 0 || duration === undefined)
        return selections;

    var s = selections
        .transition()
        .duration(duration);

    if (callback instanceof Function) {
        callback(s);
    }

    return s;
 };

 dc.units = {};
 dc.units.integers = function(s, e) {
    return Math.abs(e - s);
 };

 dc.units.ordinal = function(s, e, domain){
    return domain;
 };
 dc.units.float = {};
 dc.units.float.precision= function(precision){
    var _f = function(s, e, domain){return Math.ceil(Math.abs((e-s)/_f.resolution));};
    _f.resolution = precision;
    return _f;
 };

 dc.round = {};
 dc.round.floor = function(n) {
    return Math.floor(n);
 };
 dc.round.ceil = function(n) {
    return Math.ceil(n);
 };
 dc.round.round = function(n) {
    return Math.round(n);
 };

 dc.override = function(obj, functionName, newFunction) {
    var existingFunction = obj[functionName];
    obj["_" + functionName] = existingFunction;
    obj[functionName] = newFunction;
 };

 dc.renderlet = function(_){
    if(!arguments.length) return dc._renderlet;
    dc._renderlet = _;
    return dc;
 };

 dc.instanceOfChart = function (o) {
    return o instanceof Object && o.__dc_flag__;
 };
 dc.errors = {};

 dc.errors.Exception = function(msg) {
    var _msg = msg != null ? msg : "Unexpected internal error";

    this.message = _msg;

    this.toString = function(){
        return _msg;
    };
 };

 dc.errors.InvalidStateException = function() {
    dc.errors.Exception.apply(this, arguments);
 };dc.dateFormat = d3.time.format("%m/%d/%Y");

 dc.printers = {};
 dc.printers.filter = function (filter) {
    var s = "";

    if (filter) {
        if (filter instanceof Array) {
            if (filter.length >= 2)
                s = "[" + printSingleValue(filter[0]) + " -> " + printSingleValue(filter[1]) + "]";
            else if (filter.length >= 1)
                s = printSingleValue(filter[0]);
        } else {
            s = printSingleValue(filter)
        }
    }

    return s;
 };

 function printSingleValue(filter) {
    var s = "" + filter;

    if (filter instanceof Date)
        s = dc.dateFormat(filter);
    else if (typeof(filter) == "string")
        s = filter;
    else if (typeof(filter) == "number")
        s = Math.round(filter);

    return s;
 }

 dc.utils = {};
 dc.utils.add = function (l, r) {
    if (typeof r === "string")
        r = r.replace("%", "")

    if (l instanceof Date) {
        if (typeof r === "string") r = +r
        var d = new Date();
        d.setTime(l.getTime());
        d.setDate(l.getDate() + r);
        return d;
    } else if (typeof r === "string") {
        var percentage = (+r / 100);
        return l > 0 ? l * (1 + percentage) : l * (1 - percentage);
    } else {
        return l + r;
    }
 };
 dc.utils.subtract = function (l, r) {
    if (typeof r === "string")
        r = r.replace("%", "")

    if (l instanceof Date) {
        if (typeof r === "string") r = +r
        var d = new Date();
        d.setTime(l.getTime());
        d.setDate(l.getDate() - r);
        return d;
    } else if (typeof r === "string") {
        var percentage = (+r / 100);
        return l < 0 ? l * (1 + percentage) : l * (1 - percentage);
    } else {
        return l - r;
    }
 };
 dc.utils.GroupStack = function () {
    var _dataPointMatrix = [];
    var _groups = [];
    var _defaultAccessor;

    function initializeDataPointRow(x) {
        if (!_dataPointMatrix[x])
            _dataPointMatrix[x] = [];
    }

    this.setDataPoint = function (x, y, data) {
        initializeDataPointRow(x);
        _dataPointMatrix[x][y] = data;
    };

    this.getDataPoint = function (x, y) {
        initializeDataPointRow(x);
        var dataPoint = _dataPointMatrix[x][y];
        if (dataPoint == undefined)
            dataPoint = 0;
        return dataPoint;
    };

    this.addGroup = function (group, retriever) {
        if (!retriever)
            retriever = _defaultAccessor;
        _groups.push([group, retriever]);
        return _groups.length - 1;
    };

    this.getGroupByIndex = function (index) {
        return _groups[index][0];
    };

    this.getAccessorByIndex = function (index) {
        return _groups[index][1];
    };

    this.size = function () {
        return _groups.length;
    };

    this.clear = function () {
        _dataPointMatrix = [];
        _groups = [];
    };

    this.setDefaultAccessor = function (retriever) {
        _defaultAccessor = retriever;
    };

    this.getDataPoints = function () {
        return _dataPointMatrix;
    };
 };

 function isNegligible(max) {
    return max === undefined || (max < dc.constants.NEGLIGIBLE_NUMBER && max > -dc.constants.NEGLIGIBLE_NUMBER);
 }

 dc.utils.groupMax = function (group, accessor) {
    var max = d3.max(group.all(), function (e) {
        return accessor(e);
    });
    if (isNegligible(max)) max = 0;
    return max;
 };

 dc.utils.groupMin = function (group, accessor) {
    var min = d3.min(group.all(), function (e) {
        return accessor(e);
    });
    if (isNegligible(min)) min = 0;
    return min;
 };

 dc.utils.nameToId = function (name) {
    return name.toLowerCase().replace(/[\s]/g, "_").replace(/[\.']/g, "");
 };

 dc.utils.appendOrSelect = function (parent, name) {
    var element = parent.select(name);
    if (element.empty()) element = parent.append(name);
    return element;
 };
 dc.events = {
    current: null
 };

 dc.events.trigger = function(closure, delay) {
    if (!delay){
        closure();
        return;
    }

    dc.events.current = closure;

    setTimeout(function() {
        if (closure == dc.events.current)
            closure();
    }, delay);
 };
 dc.cumulative = {};

 dc.cumulative.Base = function() {
    this._keyIndex = [];
    this._map = {};

    this.sanitizeKey = function(key) {
        key = key + "";
        return key;
    };

    this.clear = function() {
        this._keyIndex = [];
        this._map = {};
    };

    this.size = function() {
        return this._keyIndex.length;
    };

    this.getValueByKey = function(key) {
        key = this.sanitizeKey(key);
        var value = this._map[key];
        return value;
    };

    this.setValueByKey = function(key, value) {
        key = this.sanitizeKey(key);
        return this._map[key] = value;
    };

    this.indexOfKey = function(key) {
        key = this.sanitizeKey(key);
        return this._keyIndex.indexOf(key);
    };

    this.addToIndex = function(key) {
        key = this.sanitizeKey(key);
        this._keyIndex.push(key);
    };

    this.getKeyByIndex = function(index) {
        return this._keyIndex[index];
    };
 };

 dc.cumulative.Sum = function() {
    dc.cumulative.Base.apply(this, arguments);

    this.add = function(key, value) {
        if (value == null)
            value = 0;

        if (this.getValueByKey(key) == null) {
            this.addToIndex(key);
            this.setValueByKey(key, value);
        } else {
            this.setValueByKey(key, this.getValueByKey(key) + value);
        }
    };

    this.minus = function(key, value) {
        this.setValueByKey(key, this.getValueByKey(key) - value);
    };

    this.cumulativeSum = function(key) {
        var keyIndex = this.indexOfKey(key);
        if (keyIndex < 0) return 0;
        var cumulativeValue = 0;
        for (var i = 0; i <= keyIndex; ++i) {
            var k = this.getKeyByIndex(i);
            cumulativeValue += this.getValueByKey(k);
        }
        return cumulativeValue;
    };
 };
 dc.cumulative.Sum.prototype = new dc.cumulative.Base();

 dc.cumulative.CountUnique = function() {
    dc.cumulative.Base.apply(this, arguments);

    function hashSize(hash) {
        var size = 0, key;
        for (key in hash) {
            if (hash.hasOwnProperty(key)) size++;
        }
        return size;
    }

    this.add = function(key, e) {
        if (this.getValueByKey(key) == null) {
            this.setValueByKey(key, {});
            this.addToIndex(key);
        }

        if (e != null) {
            if (this.getValueByKey(key)[e] == null)
                this.getValueByKey(key)[e] = 0;

            this.getValueByKey(key)[e] += 1;
        }
    };

    this.minus = function(key, e) {
        this.getValueByKey(key)[e] -= 1;
        if (this.getValueByKey(key)[e] <= 0)
            delete this.getValueByKey(key)[e];
    };

    this.count = function(key) {
        return hashSize(this.getValueByKey(key));
    };

    this.cumulativeCount = function(key) {
        var keyIndex = this.indexOfKey(key);
        if (keyIndex < 0) return 0;
        var cumulativeCount = 0;
        for (var i = 0; i <= keyIndex; ++i) {
            var k = this.getKeyByIndex(i);
            cumulativeCount += this.count(k);
        }
        return cumulativeCount;
    };
 };
 dc.cumulative.CountUnique.prototype = new dc.cumulative.Base();
 dc.baseChart = function (_chart) {
    _chart.__dc_flag__ = true;

    var _dimension;
    var _group;

    var _anchor;
    var _root;
    var _svg;

    var _width = 200, _height = 200;

    var _keyAccessor = function (d) {
        return d.key;
    };
    var _valueAccessor = function (d) {
        return d.value;
    };

    var _label = function (d) {
        return d.key;
    };
    var _renderLabel = false;

    var _title = function (d) {
        return d.key + ": " + d.value;
    };
    var _renderTitle = false;

    var _transitionDuration = 750;

    var _filterPrinter = dc.printers.filter;

    var _renderlets = [];

    var _chartGroup = dc.constants.DEFAULT_CHART_GROUP;

    var NULL_LISTENER = function (chart) {
    };
    var _listeners = {
        preRender: NULL_LISTENER,
        postRender: NULL_LISTENER,
        preRedraw: NULL_LISTENER,
        postRedraw: NULL_LISTENER,
        filtered: NULL_LISTENER
    };

    _chart.width = function (w) {
        if (!arguments.length) return _width;
        _width = w;
        return _chart;
    };

    _chart.height = function (h) {
        if (!arguments.length) return _height;
        _height = h;
        return _chart;
    };

    _chart.dimension = function (d) {
        if (!arguments.length) return _dimension;
        _dimension = d;
        _chart.expireCache();
        return _chart;
    };

    _chart.group = function (g) {
        if (!arguments.length) return _group;
        _group = g;
        _chart.expireCache();
        return _chart;
    };

    _chart.orderedGroup = function () {
        return _group.order(function (p) {
            return p.key;
        });
    };

    _chart.filterAll = function () {
        return _chart.filter(null);
    };

    _chart.dataSet = function () {
        return _dimension != undefined && _group != undefined;
    };

    _chart.select = function (s) {
        return _root.select(s);
    };

    _chart.selectAll = function (s) {
        return _root.selectAll(s);
    };

    _chart.anchor = function (a, chartGroup) {
        if (!arguments.length) return _anchor;
        if (dc.instanceOfChart(a)) {
            _anchor = a.anchor();
            _root = a.root();
        } else {
            _anchor = a;
            _root = d3.select(_anchor);
            _root.classed(dc.constants.CHART_CLASS, true);
            dc.registerChart(_chart, chartGroup);
        }
        _chartGroup = chartGroup;
        return _chart;
    };

    _chart.root = function (r) {
        if (!arguments.length) return _root;
        _root = r;
        return _chart;
    };

    _chart.svg = function (_) {
        if (!arguments.length) return _svg;
        _svg = _;
        return _chart;
    };

    _chart.resetSvg = function () {
        _chart.select("svg").remove();
        return _chart.generateSvg();
    };

    _chart.generateSvg = function () {
        _svg = _chart.root().append("svg")
            .attr("width", _chart.width())
            .attr("height", _chart.height());
        return _svg;
    };

    _chart.filterPrinter = function (_) {
        if (!arguments.length) return _filterPrinter;
        _filterPrinter = _;
        return _chart;
    };

    _chart.turnOnControls = function () {
        _chart.selectAll(".reset").style("display", null);
        _chart.selectAll(".filter").text(_filterPrinter(_chart.filter())).style("display", null);
        return _chart;
    };

    _chart.turnOffControls = function () {
        _chart.selectAll(".reset").style("display", "none");
        _chart.selectAll(".filter").style("display", "none").text(_chart.filter());
        return _chart;
    };

    _chart.transitionDuration = function (d) {
        if (!arguments.length) return _transitionDuration;
        _transitionDuration = d;
        return _chart;
    };

    _chart.render = function () {
        _listeners.preRender(_chart);

        if (_dimension == null)
            throw new dc.errors.InvalidStateException("Mandatory attribute chart.dimension is missing on chart["
                + _chart.anchor() + "]");

        if (_group == null)
            throw new dc.errors.InvalidStateException("Mandatory attribute chart.group is missing on chart["
                + _chart.anchor() + "]");

        var result = _chart.doRender();


        if (_chart.transitionDuration() > 0) {
            setTimeout(function () {
                _chart.invokeRenderlet(_chart);
                _listeners.postRender(_chart);
            }, _chart.transitionDuration());
        } else {
            _chart.invokeRenderlet(_chart);
            _listeners.postRender(_chart);
        }

        return result;
    };

    _chart.redraw = function () {
        _listeners.preRedraw(_chart);

        var result = _chart.doRedraw();

        _chart.invokeRenderlet(_chart);

        _listeners.postRedraw(_chart);

        return result;
    };

    _chart.invokeFilteredListener = function (chart, f) {
        if (f !== undefined) _listeners.filtered(_chart, f);
    };

    // abstract function stub
    _chart.filter = function (f) {
        // do nothing in base, should be overridden by sub-function
        _chart.invokeFilteredListener(_chart, f);
        return _chart;
    };

    _chart.doRender = function () {
        // do nothing in base, should be overridden by sub-function
        return _chart;
    };

    _chart.doRedraw = function () {
        // do nothing in base, should be overridden by sub-function
        return _chart;
    };

    _chart.keyAccessor = function (_) {
        if (!arguments.length) return _keyAccessor;
        _keyAccessor = _;
        return _chart;
    };

    _chart.valueAccessor = function (_) {
        if (!arguments.length) return _valueAccessor;
        _valueAccessor = _;
        return _chart;
    };

    _chart.label = function (_) {
        if (!arguments.length) return _label;
        _label = _;
        _renderLabel = true;
        return _chart;
    };

    _chart.renderLabel = function (_) {
        if (!arguments.length) return _renderLabel;
        _renderLabel = _;
        return _chart;
    };

    _chart.title = function (_) {
        if (!arguments.length) return _title;
        _title = _;
        _renderTitle = true;
        return _chart;
    };

    _chart.renderTitle = function (_) {
        if (!arguments.length) return _renderTitle;
        _renderTitle = _;
        return _chart;
    };

    _chart.renderlet = function (_) {
        _renderlets.push(_);
        return _chart;
    };

    _chart.invokeRenderlet = function (chart) {
        for (var i = 0; i < _renderlets.length; ++i) {
            _renderlets[i](chart);
        }
    };

    _chart.chartGroup = function (_) {
        if (!arguments.length) return _chartGroup;
        _chartGroup = _;
        return _chart;
    };

    _chart.on = function (event, listener) {
        _listeners[event] = listener;
        return _chart;
    };

    _chart.expireCache = function(){
         // do nothing in base, should be overridden by sub-function
        return _chart;
    };

    return _chart;
 };
 dc.marginable = function (_chart) {
    var _margin = {top: 10, right: 50, bottom: 30, left: 30};

    _chart.margins = function (m) {
        if (!arguments.length) return _margin;
        _margin = m;
        return _chart;
    };

    _chart.effectiveWidth = function () {
        return _chart.width() - _chart.margins().left - _chart.margins().right;
    };

    _chart.effectiveHeight = function () {
        return _chart.height() - _chart.margins().top - _chart.margins().bottom;
    };

    return _chart;
 };dc.coordinateGridChart = function (_chart) {
    var DEFAULT_Y_AXIS_TICKS = 5;
    var GRID_LINE_CLASS = "grid-line";
    var HORIZONTAL_CLASS = "horizontal";
    var VERTICAL_CLASS = "vertical";

    _chart = dc.marginable(dc.baseChart(_chart));

    var _parent;
    var _g;
    var _chartBodyG;

    var _x;
    var _xOriginalDomain;
    var _xAxis = d3.svg.axis();
    var _xUnits = dc.units.integers;
    var _xAxisPadding = 0;
    var _xElasticity = false;

    var _y;
    var _yAxis = d3.svg.axis();
    var _yAxisPadding = 0;
    var _yElasticity = false;

    var _filter;
    var _brush = d3.svg.brush();
    var _brushOn = true;
    var _round;

    var _renderHorizontalGridLine = false;
    var _renderVerticalGridLine = false;

    var _refocused = false;
    var _unitCount;

    _chart.generateG = function (parent) {
        if (parent == null)
            _parent = _chart.svg();
        else
            _parent = parent;

        _g = _parent.append("g");

        _chartBodyG = _g.append("g").attr("class", "chartBody")
            .attr("clip-path", "url(#" + getClipPathId() + ")");

        return _g;
    };

    _chart.g = function (_) {
        if (!arguments.length) return _g;
        _g = _;
        return _chart;
    };

    _chart.chartBodyG = function (_) {
        if (!arguments.length) return _chartBodyG;
        _chartBodyG = _;
        return _chart;
    };

    _chart.x = function (_) {
        if (!arguments.length) return _x;
        _x = _;
        _xOriginalDomain = _x.domain();
        return _chart;
    };

    _chart.xOriginalDomain = function () {
        return _xOriginalDomain;
    };

    _chart.xUnits = function (_) {
        if (!arguments.length) return _xUnits;
        _xUnits = _;
        return _chart;
    };

    _chart.xAxis = function (_) {
        if (!arguments.length) return _xAxis;
        _xAxis = _;
        return _chart;
    };

    _chart.elasticX = function (_) {
        if (!arguments.length) return _xElasticity;
        _xElasticity = _;
        return _chart;
    };

    _chart.xAxisPadding = function (_) {
        if (!arguments.length) return _xAxisPadding;
        _xAxisPadding = _;
        return _chart;
    };

    _chart.xUnitCount = function () {
        if (_unitCount == null || _chart.refocused()) {
            var units = _chart.xUnits()(_chart.x().domain()[0], _chart.x().domain()[1], _chart.x().domain());

            if (units instanceof Array)
                _unitCount = units.length;
            else
                _unitCount = units;
        }

        return _unitCount;
    };

    _chart.isOrdinal = function () {
        return _chart.xUnits() === dc.units.ordinal;
    };

    _chart.prepareOrdinalXAxis = function (count) {
        if (!count)
            count = _chart.xUnitCount();
        var range = [];
        var currentPosition = 0;
        var increment = _chart.xAxisLength() / count;
        for (var i = 0; i < count; i++) {
            range[i] = currentPosition;
            currentPosition += increment;
        }
        _x.range(range);
    };

    function prepareXAxis(g) {
        if (_chart.elasticX() && !_chart.isOrdinal()) {
            _x.domain([_chart.xAxisMin(), _chart.xAxisMax()]);
        }

        if (_chart.isOrdinal()) {
            _chart.prepareOrdinalXAxis();
        } else {
            _x.range([0, _chart.xAxisLength()]);
        }

        _xAxis = _xAxis.scale(_chart.x()).orient("bottom");

        renderVerticalGridLines(g);
    }

    _chart.renderXAxis = function (g) {
        var axisXG = g.selectAll("g.x");

        if (axisXG.empty())
            axisXG = g.append("g")
                .attr("class", "axis x")
                .attr("transform", "translate(" + _chart.margins().left + "," + _chart.xAxisY() + ")");

        dc.transition(axisXG, _chart.transitionDuration())
            .call(_xAxis);
    };

    function renderVerticalGridLines(g) {
        if (_renderVerticalGridLine) {
            var gridLineG = g.selectAll("g." + VERTICAL_CLASS);

            if (gridLineG.empty())
                gridLineG = g.insert("g", ":first-child")
                    .attr("class", GRID_LINE_CLASS + " " + VERTICAL_CLASS)
                    .attr("transform", "translate(" + _chart.yAxisX() + "," + _chart.margins().top + ")");

            var ticks = _xAxis.tickValues() ? _xAxis.tickValues() : _x.ticks(_xAxis.ticks()[0]);

            var lines = gridLineG.selectAll("line")
                .data(ticks);

            // enter
            var linesGEnter = lines.enter()
                .append("line")
                .attr("x1", function (d) {
                    return _x(d);
                })
                .attr("y1", _chart.xAxisY() - _chart.margins().top)
                .attr("x2", function (d) {
                    return _x(d);
                })
                .attr("y2", 0)
                .attr("opacity", 0);
            dc.transition(linesGEnter, _chart.transitionDuration())
                .attr("opacity", 1);

            // update
            dc.transition(lines, _chart.transitionDuration())
                .attr("x1", function (d) {
                    return _x(d);
                })
                .attr("y1", _chart.xAxisY() - _chart.margins().top)
                .attr("x2", function (d) {
                    return _x(d);
                })
                .attr("y2", 0);

            // exit
            lines.exit().remove();
        }
    }

    _chart.xAxisY = function () {
        return (_chart.height() - _chart.margins().bottom);
    };

    _chart.xAxisLength = function () {
        return _chart.effectiveWidth();
    };

    function prepareYAxis(g) {
        if (_y == null || _chart.elasticY()) {
            _y = d3.scale.linear();
            _y.domain([_chart.yAxisMin(), _chart.yAxisMax()]).rangeRound([_chart.yAxisHeight(), 0]);
        }

        _y.range([_chart.yAxisHeight(), 0]);
        _yAxis = _yAxis.scale(_y).orient("left").ticks(DEFAULT_Y_AXIS_TICKS);

        renderHorizontalGridLines(g);
    }

    _chart.renderYAxis = function (g) {
        var axisYG = g.selectAll("g.y");
        if (axisYG.empty())
            axisYG = g.append("g")
                .attr("class", "axis y")
                .attr("transform", "translate(" + _chart.yAxisX() + "," + _chart.margins().top + ")");

        dc.transition(axisYG, _chart.transitionDuration())
            .call(_yAxis);
    };

    function renderHorizontalGridLines(g) {
        if (_renderHorizontalGridLine) {
            var gridLineG = g.selectAll("g." + HORIZONTAL_CLASS);

            var ticks = _yAxis.tickValues() ? _yAxis.tickValues() : _y.ticks(_yAxis.ticks()[0]);

            if (gridLineG.empty())
                gridLineG = g.insert("g", ":first-child")
                    .attr("class", GRID_LINE_CLASS + " " + HORIZONTAL_CLASS)
                    .attr("transform", "translate(" + _chart.yAxisX() + "," + _chart.margins().top + ")");

            var lines = gridLineG.selectAll("line")
                .data(ticks);

            // enter
            var linesGEnter = lines.enter()
                .append("line")
                .attr("x1", 1)
                .attr("y1", function (d) {
                    return _y(d);
                })
                .attr("x2", _chart.xAxisLength())
                .attr("y2", function (d) {
                    return _y(d);
                })
                .attr("opacity", 0);
            dc.transition(linesGEnter, _chart.transitionDuration())
                .attr("opacity", 1);

            // update
            dc.transition(lines, _chart.transitionDuration())
                .attr("x1", 1)
                .attr("y1", function (d) {
                    return _y(d);
                })
                .attr("x2", _chart.xAxisLength())
                .attr("y2", function (d) {
                    return _y(d);
                });

            // exit
            lines.exit().remove();
        }
    }

    _chart.yAxisX = function () {
        return _chart.margins().left;
    };

    _chart.y = function (_) {
        if (!arguments.length) return _y;
        _y = _;
        return _chart;
    };

    _chart.yAxis = function (y) {
        if (!arguments.length) return _yAxis;
        _yAxis = y;
        return _chart;
    };

    _chart.elasticY = function (_) {
        if (!arguments.length) return _yElasticity;
        _yElasticity = _;
        return _chart;
    };

    _chart.renderHorizontalGridLines = function (_) {
        if (!arguments.length) return _renderHorizontalGridLine;
        _renderHorizontalGridLine = _;
        return _chart;
    };

    _chart.renderVerticalGridLines = function (_) {
        if (!arguments.length) return _renderVerticalGridLine;
        _renderVerticalGridLine = _;
        return _chart;
    };

    _chart.xAxisMin = function () {
        var min = d3.min(_chart.group().all(), function (e) {
            return _chart.keyAccessor()(e);
        });
        return dc.utils.subtract(min, _xAxisPadding);
    };

    _chart.xAxisMax = function () {
        var max = d3.max(_chart.group().all(), function (e) {
            return _chart.keyAccessor()(e);
        });
        return dc.utils.add(max, _xAxisPadding);
    };

    _chart.yAxisMin = function () {
        var min = d3.min(_chart.group().all(), function (e) {
            return _chart.valueAccessor()(e);
        });
        min = dc.utils.subtract(min, _yAxisPadding);
        return min;
    };

    _chart.yAxisMax = function () {
        var max = d3.max(_chart.group().all(), function (e) {
            return _chart.valueAccessor()(e);
        });
        max = dc.utils.add(max, _yAxisPadding);
        return max;
    };

    _chart.yAxisPadding = function (_) {
        if (!arguments.length) return _yAxisPadding;
        _yAxisPadding = _;
        return _chart;
    };

    _chart.yAxisHeight = function () {
        return _chart.effectiveHeight();
    };

    _chart.round = function (_) {
        if (!arguments.length) return _round;
        _round = _;
        return _chart;
    };

    _chart.filter = function (_) {
        if (!arguments.length) return _filter;

        if (_) {
            _filter = _;
            _chart.brush().extent(_);
            _chart.dimension().filter(_);
            _chart.turnOnControls();
        } else {
            _filter = null;
            _chart.brush().clear();
            _chart.dimension().filterAll();
            _chart.turnOffControls();
        }

        _chart.invokeFilteredListener(_chart, _);

        return _chart;
    };

    _chart.brush = function (_) {
        if (!arguments.length) return _brush;
        _brush = _;
        return _chart;
    };

    function brushHeight() {
        return _chart.xAxisY() - _chart.margins().top;
    }

    _chart.renderBrush = function (g) {
        if (_chart.isOrdinal())
            _brushOn = false;

        if (_brushOn) {
            _brush.on("brushstart", brushStart)
                .on("brush", brushing)
                .on("brushend", brushEnd);

            var gBrush = g.append("g")
                .attr("class", "brush")
                .attr("transform", "translate(" + _chart.margins().left + "," + _chart.margins().top + ")")
                .call(_brush.x(_chart.x()));
            gBrush.selectAll("rect").attr("height", brushHeight());
            gBrush.selectAll(".resize").append("path").attr("d", _chart.resizeHandlePath);

            if (_filter) {
                _chart.redrawBrush(g);
            }
        }
    };

    function brushStart(p) {
    }

    _chart.extendBrush = function () {
        var extent = _brush.extent();
        if (_chart.round()) {
            extent[0] = extent.map(_chart.round())[0];
            extent[1] = extent.map(_chart.round())[1];

            _g.select(".brush")
                .call(_brush.extent(extent));
        }
        return extent;
    };

    _chart.brushIsEmpty = function (extent) {
        return _brush.empty() || !extent || extent[1] <= extent[0];
    };

    function brushing(p) {
        var extent = _chart.extendBrush();

        _chart.redrawBrush(_g);

        if (_chart.brushIsEmpty(extent)) {
            dc.events.trigger(function () {
                _chart.filter(null);
                dc.redrawAll(_chart.chartGroup());
            });
        } else {
            dc.events.trigger(function () {
                _chart.filter([extent[0], extent[1]]);
                dc.redrawAll(_chart.chartGroup());
            }, dc.constants.EVENT_DELAY);
        }
    }

    function brushEnd(p) {
    }

    _chart.redrawBrush = function (g) {
        if (_brushOn) {
            if (_chart.filter() && _chart.brush().empty())
                _chart.brush().extent(_chart.filter());

            var gBrush = g.select("g.brush");
            gBrush.call(_chart.brush().x(_chart.x()));
            gBrush.selectAll("rect").attr("height", brushHeight());
        }

        _chart.fadeDeselectedArea();
    };

    _chart.fadeDeselectedArea = function () {
        // do nothing, sub-chart should override this function
    };

    // borrowed from Crossfilter example
    _chart.resizeHandlePath = function (d) {
        var e = +(d == "e"), x = e ? 1 : -1, y = brushHeight() / 3;
        return "M" + (.5 * x) + "," + y
            + "A6,6 0 0 " + e + " " + (6.5 * x) + "," + (y + 6)
            + "V" + (2 * y - 6)
            + "A6,6 0 0 " + e + " " + (.5 * x) + "," + (2 * y)
            + "Z"
            + "M" + (2.5 * x) + "," + (y + 8)
            + "V" + (2 * y - 8)
            + "M" + (4.5 * x) + "," + (y + 8)
            + "V" + (2 * y - 8);
    };

    function getClipPathId() {
        return _chart.anchor().replace('#', '') + "-clip";
    }

    function generateClipPath() {
        var defs = dc.utils.appendOrSelect(_parent, "defs");

        var chartBodyClip = dc.utils.appendOrSelect(defs, "clipPath").attr("id", getClipPathId());

        dc.utils.appendOrSelect(chartBodyClip, "rect")
            .attr("x", _chart.margins().left)
            .attr("y", _chart.margins().top)
            .attr("width", _chart.xAxisLength())
            .attr("height", _chart.yAxisHeight());
    }

    _chart.doRender = function () {
        if (_x == null)
            throw new dc.errors.InvalidStateException("Mandatory attribute chart.x is missing on chart["
                + _chart.anchor() + "]");

        _chart.resetSvg();

        if (_chart.dataSet()) {
            _chart.generateG();

            generateClipPath();
            prepareXAxis(_chart.g());
            prepareYAxis(_chart.g());

            _chart.plotData();

            _chart.renderXAxis(_chart.g());
            _chart.renderYAxis(_chart.g());

            _chart.renderBrush(_chart.g());
        }

        return _chart;
    };

    _chart.doRedraw = function () {
        prepareXAxis(_chart.g());
        prepareYAxis(_chart.g());

        _chart.plotData();

        if (_chart.elasticY())
            _chart.renderYAxis(_chart.g());

        if (_chart.elasticX() || _refocused)
            _chart.renderXAxis(_chart.g());

        _chart.redrawBrush(_chart.g());

        return _chart;
    };

    _chart.subRender = function () {
        if (_chart.dataSet()) {
            _chart.plotData();
        }

        return _chart;
    };

    _chart.brushOn = function (_) {
        if (!arguments.length) return _brushOn;
        _brushOn = _;
        return _chart;
    };

    _chart.getDataWithinXDomain = function (group) {
        var data = [];

        if (_chart.isOrdinal()) {
            data = group.all();
        } else {
            group.all().forEach(function (d) {
                var key = _chart.keyAccessor()(d);
                if (key >= _chart.x().domain()[0] && key <= _chart.x().domain()[1])
                    data.push(d);
            });
        }

        return data;
    };

    function hasRangeSelected(range) {
        return range != null && range != undefined && range instanceof Array && range.length > 1;
    }

    _chart.focus = function (range) {
        _refocused = true;

        if (hasRangeSelected(range)) {
            _chart.x().domain(range);
        } else {
            _chart.x().domain(_chart.xOriginalDomain());
        }

        _chart.redraw();

        if (!hasRangeSelected(range))
            _refocused = false;
    };

    _chart.refocused = function () {
        return _refocused;
    };

    return _chart;
 };
 dc.colorChart = function(_chart) {
    var _colors = d3.scale.category20c();

    var _colorDomain = [0, _colors.range().length];

    var _colorCalculator = function(value) {
        var minValue = _colorDomain[0];
        var maxValue = _colorDomain[1];

        if (isNaN(value)) value = 0;
        if(maxValue == null) return _colors(value);

        var colorsLength = _chart.colors().range().length;
        var denominator = (maxValue - minValue) / colorsLength;
        var colorValue = Math.abs(Math.min(colorsLength - 1, Math.round((value - minValue) / denominator)));
        return _chart.colors()(colorValue);
    };

    var _colorAccessor = function(d, i){return i;};

    _chart.colors = function(_) {
        if (!arguments.length) return _colors;

        if (_ instanceof Array) {
            _colors = d3.scale.ordinal().range(_);
            var domain = [];
            for(var i = 0; i < _.length; ++i){
                domain.push(i);
            }
            _colors.domain(domain);
        } else {
            _colors = _;
        }

        _colorDomain = [0, _colors.range().length];

        return _chart;
    };

    _chart.colorCalculator = function(_){
        if(!arguments.length) return _colorCalculator;
        _colorCalculator = _;
        return _chart;
    };

    _chart.getColor = function(d, i){
        return _colorCalculator(_colorAccessor(d, i));
    };

    _chart.colorAccessor = function(_){
        if(!arguments.length) return _colorAccessor;
        _colorAccessor = _;
        return _chart;
    };

    _chart.colorDomain = function(_){
        if(!arguments.length) return _colorDomain;
        _colorDomain = _;
        return _chart;
    };

    return _chart;
 };
 dc.singleSelectionChart = function(_chart) {
    var _filter;
    var _filterHandler = function(dimension, filter){
        dimension.filter(filter);
        return filter;
    };

    _chart.hasFilter = function() {
        return _filter != null;
    };

    _chart.filter = function(_) {
        if (!arguments.length) return _filter;

        _filter = _;

        if (_chart.dataSet() && _chart.dimension().filter != undefined){
            var f = _filterHandler(_chart.dimension(), _filter);
            _filter = f?f:_filter;
        }

        if (_) {
            _chart.turnOnControls();
        } else {
            _chart.turnOffControls();
        }

        _chart.invokeFilteredListener(_chart, _);

        return _chart;
    };

    _chart.highlightSelected = function(e) {
        d3.select(e).classed(dc.constants.SELECTED_CLASS, true);
        d3.select(e).classed(dc.constants.DESELECTED_CLASS, false);
    };

    _chart.fadeDeselected = function(e) {
        d3.select(e).classed(dc.constants.SELECTED_CLASS, false);
        d3.select(e).classed(dc.constants.DESELECTED_CLASS, true);
    };

    _chart.resetHighlight = function(e) {
        d3.select(e).classed(dc.constants.SELECTED_CLASS, false);
        d3.select(e).classed(dc.constants.DESELECTED_CLASS, false);
    };

    _chart.onClick = function(d) {
        var toFilter = _chart.keyAccessor()(d);
        dc.events.trigger(function() {
            _chart.filterTo(toFilter == _chart.filter() ? null : toFilter);
        });
    };

    _chart.filterTo = function(toFilter) {
        _chart.filter(toFilter);
        dc.redrawAll(_chart.chartGroup());
    };

    _chart.filterHandler = function(_){
        if(!arguments.length) return _filterHandler;
        _filterHandler = _;
        return _chart;
    };

    return _chart;
 };
 dc.stackableChart = function (_chart) {
    var MIN_DATA_POINT_HEIGHT = 0;

    var _groupStack = new dc.utils.GroupStack();
    var _allGroups;
    var _allValueAccessors;
    var _allKeyAccessors;

    _chart.stack = function (group, retriever) {
        _groupStack.setDefaultAccessor(_chart.valueAccessor());
        _groupStack.addGroup(group, retriever);

        _chart.expireCache();

        return _chart;
    };

    _chart.expireCache = function(){
        _allGroups = null;
        _allValueAccessors = null;
        _allKeyAccessors = null;
        return _chart;
    };

    _chart.allGroups = function () {
        if (_allGroups == null) {
            _allGroups = [];

            _allGroups.push(_chart.group());

            for (var i = 0; i < _groupStack.size(); ++i)
                _allGroups.push(_groupStack.getGroupByIndex(i));
        }

        return _allGroups;
    };

    _chart.allValueAccessors = function () {
        if (_allValueAccessors == null) {
            _allValueAccessors = [];

            _allValueAccessors.push(_chart.valueAccessor());

            for (var i = 0; i < _groupStack.size(); ++i)
                _allValueAccessors.push(_groupStack.getAccessorByIndex(i));
        }

        return _allValueAccessors;
    };

    _chart.getValueAccessorByIndex = function (groupIndex) {
        return _chart.allValueAccessors()[groupIndex];
    };

    _chart.yAxisMin = function () {
        var min = 0;
        var allGroups = _chart.allGroups();

        for (var groupIndex = 0; groupIndex < allGroups.length; ++groupIndex) {
            var group = allGroups[groupIndex];
            var m = dc.utils.groupMin(group, _chart.getValueAccessorByIndex(groupIndex));
            if (m < min) min = m;
        }

        if (min < 0) {
            min = 0;
            for (var groupIndex = 0; groupIndex < allGroups.length; ++groupIndex) {
                var group = allGroups[groupIndex];
                min += dc.utils.groupMin(group, _chart.getValueAccessorByIndex(groupIndex));
            }
        }

        min = dc.utils.subtract(min, _chart.yAxisPadding());

        return min;
    };

    _chart.yAxisMax = function () {
        var max = 0;
        var allGroups = _chart.allGroups();

        for (var groupIndex = 0; groupIndex < allGroups.length; ++groupIndex) {
            var group = allGroups[groupIndex];
            max += dc.utils.groupMax(group, _chart.getValueAccessorByIndex(groupIndex));
        }

        max = dc.utils.add(max, _chart.yAxisPadding());

        return max;
    };

    _chart.allKeyAccessors = function () {
        if (_allKeyAccessors == null) {
            _allKeyAccessors = [];

            _allKeyAccessors.push(_chart.keyAccessor());

            for (var i = 0; i < _groupStack.size(); ++i)
                _allKeyAccessors.push(_chart.keyAccessor());
        }

        return _allKeyAccessors;
    };

    _chart.getKeyAccessorByIndex = function (groupIndex) {
        return _chart.allKeyAccessors()[groupIndex];
    };

    _chart.xAxisMin = function () {
        var min = null;
        var allGroups = _chart.allGroups();

        for (var groupIndex = 0; groupIndex < allGroups.length; ++groupIndex) {
            var group = allGroups[groupIndex];
            var m = dc.utils.groupMin(group, _chart.getKeyAccessorByIndex(groupIndex));
            if (min == null || min > m) min = m;
        }

        return dc.utils.subtract(min, _chart.xAxisPadding());
    };

    _chart.xAxisMax = function () {
        var max = null;
        var allGroups = _chart.allGroups();

        for (var groupIndex = 0; groupIndex < allGroups.length; ++groupIndex) {
            var group = allGroups[groupIndex];
            var m = dc.utils.groupMax(group, _chart.getKeyAccessorByIndex(groupIndex));
            if (max == null || max < m) max = m;
        }

        return dc.utils.add(max, _chart.xAxisPadding());
    };

    _chart.baseLineY = function () {
        return _chart.y()(0);
    }

    _chart.dataPointBaseline = function () {
        return _chart.margins().top + _chart.baseLineY();
    };

    function getValueFromData(groupIndex, d) {
        return _chart.getValueAccessorByIndex(groupIndex)(d);
    }

    _chart.dataPointHeight = function (d, groupIndex) {
        var value = getValueFromData(groupIndex, d);
        var yPosition = _chart.y()(value);
        var zeroPosition = _chart.baseLineY();
        var h = 0;

        if (value > 0)
            h = zeroPosition - yPosition;
        else
            h = yPosition - zeroPosition;

        if (isNaN(h) || h < MIN_DATA_POINT_HEIGHT)
            h = MIN_DATA_POINT_HEIGHT;

        return h;
    };

    function calculateDataPointMatrix(data, groupIndex) {
        for (var dataIndex = 0; dataIndex < data.length; ++dataIndex) {
            var d = data[dataIndex];
            var value = getValueFromData(groupIndex, d);
            if (groupIndex == 0) {
                if (value > 0)
                    _groupStack.setDataPoint(groupIndex, dataIndex, _chart.dataPointBaseline() - _chart.dataPointHeight(d, groupIndex));
                else
                    _groupStack.setDataPoint(groupIndex, dataIndex, _chart.dataPointBaseline());
            } else {
                if (value > 0)
                    _groupStack.setDataPoint(groupIndex, dataIndex, _groupStack.getDataPoint(groupIndex - 1, dataIndex) - _chart.dataPointHeight(d, groupIndex))
                else if (value < 0)
                    _groupStack.setDataPoint(groupIndex, dataIndex, _groupStack.getDataPoint(groupIndex - 1, dataIndex) + _chart.dataPointHeight(d, groupIndex - 1))
                else // value == 0
                    _groupStack.setDataPoint(groupIndex, dataIndex, _groupStack.getDataPoint(groupIndex - 1, dataIndex))
            }
        }
    }

    _chart.calculateDataPointMatrixForAll = function (groups) {
        for (var groupIndex = 0; groupIndex < groups.length; ++groupIndex) {
            var group = groups[groupIndex];
            var data = group.all();

            calculateDataPointMatrix(data, groupIndex);
        }
    };

    _chart.calculateDataPointMatrixWithinXDomain = function (groups) {
        for (var groupIndex = 0; groupIndex < groups.length; ++groupIndex) {
            var group = groups[groupIndex];
            var data = _chart.getDataWithinXDomain(group);

            calculateDataPointMatrix(data, groupIndex);
        }
    };

    _chart.getChartStack = function () {
        return _groupStack;
    };

    dc.override(_chart, "valueAccessor", function (_) {
        if (!arguments.length) return _chart._valueAccessor();
        _chart.expireCache();
        return _chart._valueAccessor(_);
    });

    dc.override(_chart, "keyAccessor", function (_) {
        if (!arguments.length) return _chart._keyAccessor();
        _chart.expireCache();
        return _chart._keyAccessor(_);
    });

    return _chart;
 };
 dc.abstractBubbleChart = function (_chart) {
    var _maxBubbleRelativeSize = 0.3;
    var _minRadiusWithLabel = 10;

    _chart.BUBBLE_NODE_CLASS = "node";
    _chart.BUBBLE_CLASS = "bubble";
    _chart.MIN_RADIUS = 10;

    _chart = dc.singleSelectionChart(dc.colorChart(_chart));

    _chart.renderLabel(true);
    _chart.renderTitle(false);

    var _r = d3.scale.linear().domain([0, 100]);

    var _rValueAccessor = function (d) {
        return d.r;
    };

    _chart.r = function (_) {
        if (!arguments.length) return _r;
        _r = _;
        return _chart;
    };

    _chart.radiusValueAccessor = function (_) {
        if (!arguments.length) return _rValueAccessor;
        _rValueAccessor = _;
        return _chart;
    };

    _chart.rMin = function () {
        var min = d3.min(_chart.group().all(), function (e) {
            return _chart.radiusValueAccessor()(e);
        });
        return min;
    };

    _chart.rMax = function () {
        var max = d3.max(_chart.group().all(), function (e) {
            return _chart.radiusValueAccessor()(e);
        });
        return max;
    };

    _chart.bubbleR = function (d) {
        var value = _chart.radiusValueAccessor()(d);
        var r = _chart.r()(value);
        if (isNaN(r) || value <= 0)
            r = 0;
        return r;
    };

    var labelFunction = function (d) {
        return _chart.label()(d);
    };

    var labelOpacity = function (d) {
        return (_chart.bubbleR(d) > _minRadiusWithLabel) ? 1 : 0;
    };

    _chart.doRenderLabel = function (bubbleGEnter) {
        if (_chart.renderLabel()) {
            var label = bubbleGEnter.select("text");

            if (label.empty()) {
                label = bubbleGEnter.append("text")
                    .attr("text-anchor", "middle")
                    .attr("dy", ".3em")
                    .on("click", _chart.onClick);
            }

            label
                .attr("opacity", 0)
                .text(labelFunction);
            dc.transition(label, _chart.transitionDuration())
                .attr("opacity", labelOpacity);
        }
    };

    _chart.doUpdateLabels = function (bubbleGEnter) {
        if (_chart.renderLabel()) {
            var labels = bubbleGEnter.selectAll("text")
                .text(labelFunction);
            dc.transition(labels, _chart.transitionDuration())
                .attr("opacity", labelOpacity);
        }
    };

    var titleFunction = function (d) {
        return _chart.title()(d);
    };

    _chart.doRenderTitles = function (g) {
        if (_chart.renderTitle()) {
            var title = g.select("title");

            if (title.empty())
                g.append("title").text(titleFunction);
        }
    };

    _chart.doUpdateTitles = function (g) {
        if (_chart.renderTitle()) {
            g.selectAll("title").text(titleFunction);
        }
    };

    _chart.minRadiusWithLabel = function (_) {
        if (!arguments.length) return _minRadiusWithLabel;
        _minRadiusWithLabel = _;
        return _chart;
    };

    _chart.maxBubbleRelativeSize = function (_) {
        if (!arguments.length) return _maxBubbleRelativeSize;
        _maxBubbleRelativeSize = _;
        return _chart;
    };

    _chart.initBubbleColor = function (d, i) {
        this[dc.constants.NODE_INDEX_NAME] = i;
        return _chart.getColor(d, i);
    };

    _chart.updateBubbleColor = function (d, i) {
        // a work around to get correct node index since
        // d3 does not send i correctly here
        return _chart.getColor(d, this[dc.constants.NODE_INDEX_NAME]);
    };

    _chart.fadeDeselectedArea = function () {
        if (_chart.hasFilter()) {
            _chart.selectAll("g." + _chart.BUBBLE_NODE_CLASS).each(function (d) {
                if (_chart.isSelectedNode(d)) {
                    _chart.highlightSelected(this);
                } else {
                    _chart.fadeDeselected(this);
                }
            });
        } else {
            _chart.selectAll("g." + _chart.BUBBLE_NODE_CLASS).each(function (d) {
                _chart.resetHighlight(this);
            });
        }
    };

    _chart.isSelectedNode = function (d) {
        return _chart.filter() == d.key;
    };

    _chart.onClick = function (d) {
        var toFilter = d.key;
        if (toFilter == _chart.filter()) {
            dc.events.trigger(function () {
                _chart.filter(null);
                dc.redrawAll(_chart.chartGroup());
            });
        } else {
            dc.events.trigger(function () {
                _chart.filter(toFilter);
                dc.redrawAll(_chart.chartGroup());
            });
        }
    };

    return _chart;
 };
 dc.pieChart = function(parent, chartGroup) {
    var DEFAULT_MIN_ANGLE_FOR_LABEL = 0.5;

    var _sliceCssClass = "pie-slice";

    var _radius = 90, _innerRadius = 0;

    var _g;

    var _minAngleForLabel = DEFAULT_MIN_ANGLE_FOR_LABEL;

    var _chart = dc.singleSelectionChart(dc.colorChart(dc.baseChart({})));

    _chart.label(function(d) {
        return _chart.keyAccessor()(d.data);
    });

    _chart.renderLabel(true);

    _chart.title(function(d) {
        return _chart.keyAccessor()(d.data) + ": " + _chart.valueAccessor()(d.data);
    });

    _chart.transitionDuration(350);

    _chart.doRender = function() {
        _chart.resetSvg();

        _g = _chart.svg()
            .append("g")
            .attr("transform", "translate(" + _chart.cx() + "," + _chart.cy() + ")");

        drawChart();

        return _chart;
    };

    function drawChart() {
        if (_chart.dataSet()) {
            var pie = calculateDataPie();

            var arc = _chart.buildArcs();

            var pieData = pie(_chart.orderedGroup().top(Infinity));

            var slices = _g.selectAll("g." + _sliceCssClass)
                .data(pieData);

            createElements(slices, arc, pieData);

            updateElements(pieData, arc);

            removeElements(slices);

            highlightFilter();
        }
    }

    function createElements(slices, arc, pieData) {
        var slicesEnter = createSliceNodes(slices);

        createSlicePath(slicesEnter, arc);

        createTitles(slicesEnter);

        createLabels(pieData, arc);
    }

    function createSliceNodes(slices) {
        var slicesEnter = slices
            .enter()
            .append("g")
            .attr("class", function(d, i) {
                return _sliceCssClass + " _" + i;
            });
        return slicesEnter;
    }

    function createSlicePath(slicesEnter, arc) {
        var slicePath = slicesEnter.append("path")
            .attr("fill", function(d, i) {
                return _chart.getColor(d, i);
            })
            .on("click", onClick)
            .attr("d", function(d, i) {
                return safeArc(d, i, arc);
            });
        slicePath.transition()
            .duration(_chart.transitionDuration())
            .attrTween("d", tweenPie);
    }

    function createTitles(slicesEnter) {
        if (_chart.renderTitle()) {
            slicesEnter.append("title").text(function(d) {
                return _chart.title()(d);
            });
        }
    }

    function createLabels(pieData, arc) {
        if (_chart.renderLabel()) {
            var labels = _g.selectAll("text." + _sliceCssClass)
                .data(pieData);

            var labelsEnter = labels
                .enter()
                .append("text")
                .attr("class", function(d, i) {
                    return _sliceCssClass + " _" + i;
                })
                .on("click", onClick);
            dc.transition(labelsEnter, _chart.transitionDuration())
                .attr("transform", function(d) {
                    d.innerRadius = _chart.innerRadius();
                    d.outerRadius = _radius;
                    var centroid = arc.centroid(d);
                    if (isNaN(centroid[0]) || isNaN(centroid[1])) {
                        return "translate(0,0)";
                    } else {
                        return "translate(" + centroid + ")";
                    }
                })
                .attr("text-anchor", "middle")
                .text(function(d) {
                    var data = d.data;
                    if (sliceHasNoData(data) || sliceTooSmall(d))
                        return "";
                    return _chart.label()(d);
                });
        }
    }

    function updateElements(pieData, arc) {
        updateSlicePaths(pieData, arc);
        updateLabels(pieData, arc);
        updateTitles(pieData);
    }

    function updateSlicePaths(pieData, arc) {
        var slicePaths = _g.selectAll("g." + _sliceCssClass)
            .data(pieData)
            .select("path")
            .attr("d", function(d, i) {
                return safeArc(d, i, arc);
            });
        dc.transition(slicePaths, _chart.transitionDuration(),
            function(s) {
                s.attrTween("d", tweenPie);
            }).attr("fill", function(d, i) {
                return _chart.getColor(d, i);
            });
    }

    function updateLabels(pieData, arc) {
        if (_chart.renderLabel()) {
            var labels = _g.selectAll("text." + _sliceCssClass)
                .data(pieData);
            dc.transition(labels, _chart.transitionDuration())
                .attr("transform", function(d) {
                    d.innerRadius = _chart.innerRadius();
                    d.outerRadius = _radius;
                    var centroid = arc.centroid(d);
                    if (isNaN(centroid[0]) || isNaN(centroid[1])) {
                        return "translate(0,0)";
                    } else {
                        return "translate(" + centroid + ")";
                    }
                })
                .attr("text-anchor", "middle")
                .text(function(d) {
                    var data = d.data;
                    if (sliceHasNoData(data) || sliceTooSmall(d))
                        return "";
                    return _chart.label()(d);
                });
        }
    }

    function updateTitles(pieData) {
        if (_chart.renderTitle()) {
            _g.selectAll("g." + _sliceCssClass)
                .data(pieData)
                .select("title")
                .text(function(d) {
                    return _chart.title()(d);
                });
        }
    }

    function removeElements(slices) {
        slices.exit().remove();
    }

    function highlightFilter() {
        if (_chart.hasFilter()) {
            _chart.selectAll("g." + _sliceCssClass).each(function(d) {
                if (_chart.isSelectedSlice(d)) {
                    _chart.highlightSelected(this);
                } else {
                    _chart.fadeDeselected(this);
                }
            });
        } else {
            _chart.selectAll("g." + _sliceCssClass).each(function(d) {
                _chart.resetHighlight(this);
            });
        }
    }

    _chart.innerRadius = function(r) {
        if (!arguments.length) return _innerRadius;
        _innerRadius = r;
        return _chart;
    };

    _chart.radius = function(r) {
        if (!arguments.length) return _radius;
        _radius = r;
        return _chart;
    };

    _chart.cx = function() {
        return _chart.width() / 2;
    };

    _chart.cy = function() {
        return _chart.height() / 2;
    };

    _chart.buildArcs = function() {
        return d3.svg.arc().outerRadius(_radius).innerRadius(_innerRadius);
    };

    _chart.isSelectedSlice = function(d) {
        return _chart.filter() == _chart.keyAccessor()(d.data);
    };

    _chart.doRedraw = function() {
        drawChart();
        return _chart;
    };

    _chart.minAngleForLabel = function(_) {
        if (!arguments.length) return _minAngleForLabel;
        _minAngleForLabel = _;
        return _chart;
    };

    function calculateDataPie() {
        return d3.layout.pie().sort(null).value(function(d) {
            return _chart.valueAccessor()(d);
        });
    }

    function sliceTooSmall(d) {
        var angle = (d.endAngle - d.startAngle);
        return isNaN(angle) || angle < _minAngleForLabel;
    }

    function sliceHasNoData(data) {
        return _chart.valueAccessor()(data) == 0;
    }

    function tweenPie(b) {
        b.innerRadius = _chart.innerRadius();
        var current = this._current;
        if (isOffCanvas(current))
            current = {startAngle: 0, endAngle: 0};
        var i = d3.interpolate(current, b);
        this._current = i(0);
        return function(t) {
            return safeArc(i(t), 0, _chart.buildArcs());
        };
    }

    function isOffCanvas(current) {
        return current == null || isNaN(current.startAngle) || isNaN(current.endAngle);
    }

    function onClick(d) {
        _chart.onClick(d.data);
    }

    function safeArc(d, i, arc) {
        var path = arc(d, i);
        if(path.indexOf("NaN") >= 0)
            path = "M0,0";
        return path;
    }

    return _chart.anchor(parent, chartGroup);
 };
 dc.barChart = function (parent, chartGroup) {
    var MIN_BAR_WIDTH = 1;
    var DEFAULT_GAP_BETWEEN_BARS = 2;

    var _chart = dc.stackableChart(dc.coordinateGridChart(dc.singleSelectionChart({})));

    var _gap = DEFAULT_GAP_BETWEEN_BARS;
    var _centerBar = false;

    var _numberOfBars;
    var _barWidth;

    _chart.plotData = function () {
        var groups = _chart.allGroups();

        _chart.calculateDataPointMatrixWithinXDomain(groups);

        for (var groupIndex = 0; groupIndex < groups.length; ++groupIndex) {
            generateBarsPerGroup(groupIndex, groups[groupIndex]);
        }
    };

    function generateBarsPerGroup(groupIndex, group) {
        var bars = _chart.chartBodyG().selectAll("rect." + dc.constants.STACK_CLASS + groupIndex)
            .data(_chart.getDataWithinXDomain(group));

        addNewBars(bars, groupIndex);

        updateBars(bars, groupIndex);

        deleteBars(bars);
    }

    function addNewBars(bars, groupIndex) {
        var bars = bars.enter().append("rect");

        bars.attr("class", "bar " + dc.constants.STACK_CLASS + groupIndex)
            .attr("x", function (data, dataIndex) {
                return barX(this, data, groupIndex, dataIndex);
            })
            .attr("y", _chart.baseLineY())
            .attr("width", barWidth);

        if (_chart.isOrdinal())
            bars.on("click", _chart.onClick);

        if (_chart.renderTitle()) {
            bars.append("title").text(_chart.title());
        }

        dc.transition(bars, _chart.transitionDuration())
            .attr("y", function (data, dataIndex) {
                return barY(this, data, dataIndex);
            })
            .attr("height", function (data) {
                return _chart.dataPointHeight(data, getGroupIndexFromBar(this));
            });
    }

    function updateBars(bars, groupIndex) {
        if (_chart.renderTitle()) {
            bars.select("title").text(_chart.title());
        }

        dc.transition(bars, _chart.transitionDuration())
            .attr("x", function (data, dataIndex) {
                return barX(this, data, groupIndex, dataIndex);
            })
            .attr("y", function (data, dataIndex) {
                return barY(this, data, dataIndex);
            })
            .attr("height", function (data) {
                return _chart.dataPointHeight(data, getGroupIndexFromBar(this));
            })
            .attr("width", barWidth);
    }

    function deleteBars(bars) {
        dc.transition(bars.exit(), _chart.transitionDuration())
            .attr("y", _chart.xAxisY())
            .attr("height", 0);
    }

    function getNumberOfBars() {
        if (_numberOfBars == null || _chart.refocused()){
            _numberOfBars = _chart.xUnitCount();
        }
        return _numberOfBars;
    }

    function barWidth(d) {
        if (_barWidth == null || _chart.refocused()) {
            var numberOfBars = getNumberOfBars();
            var w = MIN_BAR_WIDTH;
            if (_chart.isOrdinal())
                w = Math.floor(_chart.xAxisLength() / (numberOfBars + 1));
            else
                w = Math.floor(_chart.xAxisLength() / numberOfBars);

            w -= _gap;

            if (isNaN(w) || w < MIN_BAR_WIDTH)
                w = MIN_BAR_WIDTH;

            _barWidth = w;
        }

        return _barWidth;
    }

    function setGroupIndexToBar(bar, groupIndex) {
        bar[dc.constants.GROUP_INDEX_NAME] = groupIndex;
    }

    function barX(bar, data, groupIndex, dataIndex) {
        setGroupIndexToBar(bar, groupIndex);
        var position = _chart.x()(_chart.keyAccessor()(data)) + _chart.margins().left;
        if (_centerBar)
            position = position - barWidth(data) / 2;
        return position;
    }

    function getGroupIndexFromBar(bar) {
        var groupIndex = bar[dc.constants.GROUP_INDEX_NAME];
        return groupIndex;
    }

    function barY(bar, data, dataIndex) {
        var groupIndex = getGroupIndexFromBar(bar);
        return _chart.getChartStack().getDataPoint(groupIndex, dataIndex);
    }

    _chart.fadeDeselectedArea = function () {
        var bars = _chart.chartBodyG().selectAll("rect.bar");
        var extent = _chart.brush().extent();

        if (_chart.isOrdinal()) {
            if (_chart.filter() != null)
                bars.classed(dc.constants.DESELECTED_CLASS, function (d) {
                    var key = _chart.keyAccessor()(d);
                    return key != _chart.filter();
                });
            else
                bars.classed(dc.constants.DESELECTED_CLASS, false);
        } else {
            if (!_chart.brushIsEmpty(extent)) {
                var start = extent[0];
                var end = extent[1];

                bars.classed(dc.constants.DESELECTED_CLASS, function (d) {
                    var xValue = _chart.keyAccessor()(d);
                    return xValue < start || xValue >= end;
                });
            } else {
                bars.classed(dc.constants.DESELECTED_CLASS, false);
            }
        }
    };

    _chart.centerBar = function (_) {
        if (!arguments.length) return _centerBar;
        _centerBar = _;
        return _chart;
    };

    _chart.gap = function (_) {
        if (!arguments.length) return _gap;
        _gap = _;
        return _chart;
    };

    _chart.extendBrush = function () {
        var extent = _chart.brush().extent();
        if (_chart.round() && !_centerBar) {
            extent[0] = extent.map(_chart.round())[0];
            extent[1] = extent.map(_chart.round())[1];

            _chart.chartBodyG().select(".brush")
                .call(_chart.brush().extent(extent));
        }
        return extent;
    };

    dc.override(_chart, "prepareOrdinalXAxis", function () {
        return this._prepareOrdinalXAxis(_chart.xUnitCount() + 1);
    });

    return _chart.anchor(parent, chartGroup);
 };
 dc.lineChart = function(parent, chartGroup) {
    var AREA_BOTTOM_PADDING = 1;
    var DEFAULT_DOT_RADIUS = 5;
    var TOOLTIP_G_CLASS = "dc-tooltip";
    var DOT_CIRCLE_CLASS = "dot";
    var Y_AXIS_REF_LINE_CLASS = "yRef";
    var X_AXIS_REF_LINE_CLASS = "xRef";

    var _chart = dc.stackableChart(dc.coordinateGridChart({}));
    var _renderArea = false;
    var _dotRadius = DEFAULT_DOT_RADIUS;

    _chart.transitionDuration(500);

    _chart.plotData = function() {
        var groups = _chart.allGroups();

        _chart.calculateDataPointMatrixForAll(groups);

        for (var groupIndex = 0; groupIndex < groups.length; ++ groupIndex) {
            var group = groups[groupIndex];
            plotDataByGroup(groupIndex, group);
        }
    };

    function plotDataByGroup(groupIndex, group) {
        var stackedCssClass = getStackedCssClass(groupIndex);

        var g = createGrouping(stackedCssClass, group);

        var line = drawLine(g, stackedCssClass, groupIndex);

        if (_renderArea)
            drawArea(g, stackedCssClass, groupIndex, line);

        if (_chart.renderTitle())
            drawDots(g, groupIndex);
    }

    function getStackedCssClass(groupIndex) {
        return dc.constants.STACK_CLASS + groupIndex;
    }

    function createGrouping(stackedCssClass, group) {
        var g = _chart.chartBodyG().select("g." + stackedCssClass);

        if (g.empty())
            g = _chart.chartBodyG().append("g").attr("class", stackedCssClass);

        g.datum(group.all());

        return g;
    }

    function drawLine(g, stackedCssClass, groupIndex) {
        var linePath = g.select("path.line");

        if (linePath.empty())
            linePath = g.append("path")
                .attr("class", "line " + stackedCssClass);

        linePath[0][0][dc.constants.GROUP_INDEX_NAME] = groupIndex;

        var line = d3.svg.line()
            .x(lineX)
            .y(function(d, dataIndex) {
                var groupIndex = this[dc.constants.GROUP_INDEX_NAME];
                return lineY(d, dataIndex, groupIndex);
            });

        dc.transition(linePath, _chart.transitionDuration(),
            function(t) {
                t.ease("linear");
            }).attr("d", line);

        return line;
    }

    var lineX = function(d) {
        return _chart.margins().left + _chart.x()(_chart.keyAccessor()(d));
    };

    var lineY = function(d, dataIndex, groupIndex) {
        var y = _chart.getChartStack().getDataPoint(groupIndex, dataIndex);
        if(y >= _chart.dataPointBaseline())
            y += _chart.dataPointHeight(d, groupIndex);
        return y;
    };

    function drawArea(g, stackedCssClass, groupIndex, line) {
        var areaPath = g.select("path.area");

        if (areaPath.empty())
            areaPath = g.append("path")
                .attr("class", "area " + stackedCssClass);

        areaPath[0][0][dc.constants.GROUP_INDEX_NAME] = groupIndex;

        var area = d3.svg.area()
            .x(line.x())
            .y1(line.y())
            .y0(function(d, dataIndex) {
                var groupIndex = this[dc.constants.GROUP_INDEX_NAME];

                if (groupIndex == 0)
                    return _chart.dataPointBaseline() - AREA_BOTTOM_PADDING;

                var y = _chart.getChartStack().getDataPoint(groupIndex-1, dataIndex);

                if(y < _chart.dataPointBaseline())
                    return y - AREA_BOTTOM_PADDING;
                else
                    return y + _chart.dataPointHeight(d, groupIndex-1);
            });

        dc.transition(areaPath, _chart.transitionDuration(),
            function(t) {
                t.ease("linear");
            }).attr("d", area);
    }

    _chart.renderArea = function(_) {
        if (!arguments.length) return _renderArea;
        _renderArea = _;
        return _chart;
    };

    function drawDots(parentG, groupIndex) {
        var g = parentG.select("g." + TOOLTIP_G_CLASS);

        if (g.empty())
            g = parentG.append("g").attr("class", TOOLTIP_G_CLASS);

        createRefLines(g);

        var dots = g.selectAll("circle." + DOT_CIRCLE_CLASS)
            .data(g.datum());

        dots.enter()
            .append("circle")
            .attr("class", DOT_CIRCLE_CLASS)
            .attr("r", _dotRadius)
            .style("fill-opacity", 1e-6)
            .style("stroke-opacity", 1e-6)
            .on("mousemove", function(d) {
                var dot = d3.select(this);
                showDot(dot);
                showRefLines(dot, g);
            })
            .on("mouseout", function(d) {
                var dot = d3.select(this);
                hideDot(dot);
                hideRefLines(g);
            })
            .append("title").text(_chart.title());

        dots.attr("cx", lineX)
            .attr("cy", function(d, dataIndex) {
                return lineY(d, dataIndex, groupIndex);
            })
            .select("title").text(_chart.title());

        dots.exit().remove();
    }

    function createRefLines(g) {
        var yRefLine = g.select("path." + Y_AXIS_REF_LINE_CLASS).empty() ? g.append("path").attr("class", Y_AXIS_REF_LINE_CLASS) : g.select("path." + Y_AXIS_REF_LINE_CLASS);
        yRefLine.style("display", "none").attr("stroke-dasharray", "5,5");

        var xRefLine = g.select("path." + X_AXIS_REF_LINE_CLASS).empty() ? g.append("path").attr("class", X_AXIS_REF_LINE_CLASS) : g.select("path." + X_AXIS_REF_LINE_CLASS);
        xRefLine.style("display", "none").attr("stroke-dasharray", "5,5");
    }

    function showDot(dot) {
        dot.style("fill-opacity", .8);
        dot.style("stroke-opacity", .8);
        return dot;
    }

    function showRefLines(dot, g) {
        var x = dot.attr("cx");
        var y = dot.attr("cy");
        g.select("path." + Y_AXIS_REF_LINE_CLASS).style("display", "").attr("d", "M" + _chart.margins().left + " " + y + "L" + (x) + " " + (y));
        g.select("path." + X_AXIS_REF_LINE_CLASS).style("display", "").attr("d", "M" + x + " " + (_chart.height() - _chart.margins().bottom) + "L" + x + " " + y);
    }

    function hideDot(dot) {
        dot.style("fill-opacity", 1e-6).style("stroke-opacity", 1e-6);
    }

    function hideRefLines(g) {
        g.select("path." + Y_AXIS_REF_LINE_CLASS).style("display", "none");
        g.select("path." + X_AXIS_REF_LINE_CLASS).style("display", "none");
    }

    _chart.dotRadius = function(_) {
        if (!arguments.length) return _dotRadius;
        _dotRadius = _;
        return _chart;
    };

    return _chart.anchor(parent, chartGroup);
 };
 dc.dataCount = function(parent, chartGroup) {
    var _formatNumber = d3.format(",d");
    var _chart = dc.baseChart({});

    _chart.doRender = function() {
        _chart.selectAll(".total-count").text(_formatNumber(_chart.dimension().size()));
        _chart.selectAll(".filter-count").text(_formatNumber(_chart.group().value()));

        return _chart;
    };

    _chart.doRedraw = function(){
        return _chart.doRender();
    };

    return _chart.anchor(parent, chartGroup);
 };
 dc.dataTable = function(parent, chartGroup) {
    var LABEL_CSS_CLASS = "dc-table-label";
    var ROW_CSS_CLASS = "dc-table-row";
    var COLUMN_CSS_CLASS = "dc-table-column";
    var GROUP_CSS_CLASS = "dc-table-group";

    var _chart = dc.baseChart({});

    var _size = 25;
    var _columns = [];
    var _sortBy = function(d) {
        return d;
    };
    var _order = d3.ascending;
    var _sort;

    _chart.doRender = function() {
        _chart.selectAll("tbody").remove();

        renderRows(renderGroups());

        return _chart;
    };

    function renderGroups() {
        var groups = _chart.root().selectAll("tbody")
            .data(nestEntries(), function(d) {
                return _chart.keyAccessor()(d);
            });

        var rowGroup = groups
            .enter()
            .append("tbody");

        rowGroup
            .append("tr")
            .attr("class", GROUP_CSS_CLASS)
                .append("td")
                .attr("class", LABEL_CSS_CLASS)
                .attr("colspan", _columns.length)
                .html(function(d) {
                    return _chart.keyAccessor()(d);
                });

        groups.exit().remove();

        return rowGroup;
    }

    function nestEntries() {
        if (!_sort)
            _sort = crossfilter.quicksort.by(_sortBy);

        var entries = _chart.dimension().top(_size);

        return d3.nest()
            .key(_chart.group())
            .sortKeys(_order)
            .entries(_sort(entries, 0, entries.length));
    }

    function renderRows(groups) {
        var rows = groups.order()
            .selectAll("tr." + ROW_CSS_CLASS)
            .data(function(d) {
                return d.values;
            });

        var rowEnter = rows.enter()
            .append("tr")
            .attr("class", ROW_CSS_CLASS);

        for (var i = 0; i < _columns.length; ++i) {
            var f = _columns[i];
            rowEnter.append("td")
                .attr("class", COLUMN_CSS_CLASS + " _" + i)
                .html(function(d) {
                    return f(d);
                });
        }

        rows.exit().remove();

        return rows;
    }

    _chart.doRedraw = function() {
        return _chart.doRender();
    };

    _chart.size = function(s) {
        if (!arguments.length) return _size;
        _size = s;
        return _chart;
    };

    _chart.columns = function(_) {
        if (!arguments.length) return _columns;
        _columns = _;
        return _chart;
    };

    _chart.sortBy = function(_) {
        if (!arguments.length) return _sortBy;
        _sortBy = _;
        return _chart;
    };

    _chart.order = function(_) {
        if (!arguments.length) return _order;
        _order = _;
        return _chart;
    };

    return _chart.anchor(parent, chartGroup);
 };
 dc.bubbleChart = function(parent, chartGroup) {
    var _chart = dc.abstractBubbleChart(dc.coordinateGridChart({}));

    var _elasticRadius = false;

    _chart.transitionDuration(750);

    var bubbleLocator = function(d) {
        return "translate(" + (bubbleX(d)) + "," + (bubbleY(d)) + ")";
    };

    _chart.elasticRadius = function(_) {
        if (!arguments.length) return _elasticRadius;
        _elasticRadius = _;
        return _chart;
    };

    _chart.plotData = function() {
        if (_elasticRadius)
            _chart.r().domain([_chart.rMin(), _chart.rMax()]);

        _chart.r().range([_chart.MIN_RADIUS, _chart.xAxisLength() * _chart.maxBubbleRelativeSize()]);

        var bubbleG = _chart.chartBodyG().selectAll("g." + _chart.BUBBLE_NODE_CLASS)
            .data(_chart.group().all());

        renderNodes(bubbleG);

        updateNodes(bubbleG);

        removeNodes(bubbleG);

        _chart.fadeDeselectedArea();
    };

    function renderNodes(bubbleG) {
        var bubbleGEnter = bubbleG.enter().append("g");

        bubbleGEnter
            .attr("class", _chart.BUBBLE_NODE_CLASS)
            .attr("transform", bubbleLocator)
            .append("circle").attr("class", function(d, i) {
                return _chart.BUBBLE_CLASS + " _" + i;
            })
            .on("click", _chart.onClick)
            .attr("fill", _chart.initBubbleColor)
            .attr("r", 0);
        dc.transition(bubbleG, _chart.transitionDuration())
            .attr("r", function(d) {
                return _chart.bubbleR(d);
            })
            .attr("opacity", function(d) {
                return (_chart.bubbleR(d) > 0) ? 1 : 0;
            });

        _chart.doRenderLabel(bubbleGEnter);

        _chart.doRenderTitles(bubbleGEnter);
    }

    function updateNodes(bubbleG) {
        dc.transition(bubbleG, _chart.transitionDuration())
            .attr("transform", bubbleLocator)
            .selectAll("circle." + _chart.BUBBLE_CLASS)
            .attr("fill", _chart.updateBubbleColor)
            .attr("r", function(d) {
                return _chart.bubbleR(d);
            })
            .attr("opacity", function(d) {
                return (_chart.bubbleR(d) > 0) ? 1 : 0;
            });

        _chart.doUpdateLabels(bubbleG);
        _chart.doUpdateTitles(bubbleG);
    }

    function removeNodes(bubbleG) {
        bubbleG.exit().remove();
    }

    function bubbleX(d) {
        var x = _chart.x()(_chart.keyAccessor()(d)) + _chart.margins().left;
        if (isNaN(x))
            x = 0;
        return x;
    }

    function bubbleY(d) {
        var y = _chart.margins().top + _chart.y()(_chart.valueAccessor()(d));
        if (isNaN(y))
            y = 0;
        return y;
    }

    _chart.renderBrush = function(g) {
        // override default x axis brush from parent chart
    };

    _chart.redrawBrush = function(g) {
        // override default x axis brush from parent chart
        _chart.fadeDeselectedArea();
    };

    return _chart.anchor(parent, chartGroup);
 };
 dc.compositeChart = function(parent, chartGroup) {
    var SUB_CHART_CLASS = "sub";

    var _chart = dc.coordinateGridChart({});
    var _children = [];

    _chart.transitionDuration(500);

    dc.override(_chart, "generateG", function() {
        var g = this._generateG();

        for (var i = 0; i < _children.length; ++i) {
            var child = _children[i];

            generateChildG(child, i);

            if (child.dimension() == null) child.dimension(_chart.dimension());
            if (child.group() == null) child.group(_chart.group());
            child.chartGroup(_chart.chartGroup());
            child.svg(_chart.svg());
            child.height(_chart.height());
            child.width(_chart.width());
            child.margins(_chart.margins());
            child.xUnits(_chart.xUnits());
            child.transitionDuration(_chart.transitionDuration());
        }

        return g;
    });

    function generateChildG(child, i) {
        child.generateG(_chart.g());
        child.g().attr("class", SUB_CHART_CLASS + " _" + i);
    }

    _chart.plotData = function() {
        for (var i = 0; i < _children.length; ++i) {
            var child = _children[i];

            if (child.g() == null) {
                generateChildG(child, i);
            }

            child.x(_chart.x());
            child.y(_chart.y());
            child.xAxis(_chart.xAxis());
            child.yAxis(_chart.yAxis());

            child.plotData();

            child.invokeRenderlet(child);
        }
    };

    _chart.fadeDeselectedArea = function() {
        for (var i = 0; i < _children.length; ++i) {
            var child = _children[i];
            child.brush(_chart.brush());
            child.fadeDeselectedArea();
        }
    };

    _chart.compose = function(charts) {
        _children = charts;
        return _chart;
    };

    _chart.children = function(){
        return _children;
    };

    function getAllYAxisMinFromChildCharts() {
        var allMins = [];
        for (var i = 0; i < _children.length; ++i) {
            allMins.push(_children[i].yAxisMin());
        }
        return allMins;
    }

    _chart.yAxisMin = function() {
        return d3.min(getAllYAxisMinFromChildCharts());
    };

    function getAllYAxisMaxFromChildCharts() {
        var allMaxes = [];
        for (var i = 0; i < _children.length; ++i) {
            allMaxes.push(_children[i].yAxisMax());
        }
        return allMaxes;
    }

    _chart.yAxisMax = function() {
        return dc.utils.add(d3.max(getAllYAxisMaxFromChildCharts()), _chart.yAxisPadding());
    };

    function getAllXAxisMinFromChildCharts() {
        var allMins = [];
        for (var i = 0; i < _children.length; ++i) {
            allMins.push(_children[i].xAxisMin());
        }
        return allMins;
    }

    _chart.xAxisMin = function() {
        return dc.utils.subtract(d3.min(getAllXAxisMinFromChildCharts()), _chart.xAxisPadding());
    };

    function getAllXAxisMaxFromChildCharts() {
        var allMaxes = [];
        for (var i = 0; i < _children.length; ++i) {
            allMaxes.push(_children[i].xAxisMax());
        }
        return allMaxes;
    }

    _chart.xAxisMax = function() {
        return dc.utils.add(d3.max(getAllXAxisMaxFromChildCharts()), _chart.xAxisPadding());
    };

    return _chart.anchor(parent, chartGroup);
 };
 dc.geoChoroplethChart = function (parent, chartGroup) {
    var _chart = dc.singleSelectionChart(dc.colorChart(dc.baseChart({})));

    _chart.colorAccessor(function (d, i) {
        return d;
    });

    var _geoPath = d3.geo.path();

    var _geoJsons = [];

    _chart.doRender = function () {
        _chart.resetSvg();

        for (var layerIndex = 0; layerIndex < _geoJsons.length; ++layerIndex) {
            var states = _chart.svg().append("g")
                .attr("class", "layer" + layerIndex);

            var regionG = states.selectAll("g." + geoJson(layerIndex).name)
                .data(geoJson(layerIndex).data)
                .enter()
                .append("g")
                .attr("class", geoJson(layerIndex).name);

            regionG
                .append("path")
                .attr("fill", "white")
                .attr("d", _geoPath);

            regionG.append("title");

            plotData(layerIndex);
        }
    };

    function plotData(layerIndex) {
        var maxValue = dc.utils.groupMax(_chart.group(), _chart.valueAccessor());
        var data = generateLayeredData();

        if (isDataLayer(layerIndex)) {
            var regionG = renderRegionG(layerIndex);

            renderPaths(regionG, layerIndex, data, maxValue);

            renderTitle(regionG, layerIndex, data);
        }
    }

    function generateLayeredData() {
        var data = {};
        var groupAll = _chart.group().all();
        for (var i = 0; i < groupAll.length; ++i) {
            data[_chart.keyAccessor()(groupAll[i])] = _chart.valueAccessor()(groupAll[i]);
        }
        return data;
    }

    function isDataLayer(layerIndex) {
        return geoJson(layerIndex).keyAccessor;
    }

    function renderRegionG(layerIndex) {
        var regionG = _chart.svg()
            .selectAll(layerSelector(layerIndex))
            .classed("selected", function (d) {
                return isSelected(layerIndex, d);
            })
            .classed("deselected", function (d) {
                return isDeselected(layerIndex, d);
            })
            .attr("class", function (d) {
                var layerNameClass = geoJson(layerIndex).name;
                var regionClass = dc.utils.nameToId(geoJson(layerIndex).keyAccessor(d));
                var baseClasses = layerNameClass + " " + regionClass;
                if (isSelected(layerIndex, d)) baseClasses += " selected";
                if (isDeselected(layerIndex, d)) baseClasses += " deselected";
                return baseClasses;
            });
        return regionG;
    }

    function layerSelector(layerIndex) {
        return "g.layer" + layerIndex + " g." + geoJson(layerIndex).name;
    }

    function isSelected(layerIndex, d) {
        return _chart.hasFilter() && _chart.filter() == getKey(layerIndex, d);
    }

    function isDeselected(layerIndex, d) {
        return _chart.hasFilter() && _chart.filter() != getKey(layerIndex, d);
    }

    function getKey(layerIndex, d) {
        return geoJson(layerIndex).keyAccessor(d);
    }

    function geoJson(index) {
        return _geoJsons[index];
    }

    function renderPaths(regionG, layerIndex, data, maxValue) {
        var paths = regionG
            .select("path")
            .attr("fill", function (d) {
                var currentFill = d3.select(this).attr("fill");
                if (currentFill)
                    return currentFill;
                return "none";
            })
            .on("click", function (d) {
                return _chart.onClick(d, layerIndex);
            });

        dc.transition(paths, _chart.transitionDuration()).attr("fill", function (d, i) {
            return _chart.getColor(data[geoJson(layerIndex).keyAccessor(d)], i);
        });
    }

    _chart.onClick = function (d, layerIndex) {
        var selectedRegion = geoJson(layerIndex).keyAccessor(d);
        if (selectedRegion == _chart.filter()) {
            dc.events.trigger(function () {
                _chart.filter(null);
                dc.redrawAll(_chart.chartGroup());
            });
        } else {
            dc.events.trigger(function () {
                _chart.filter(selectedRegion);
                dc.redrawAll(_chart.chartGroup());
            });
        }
    };

    function renderTitle(regionG, layerIndex, data) {
        if (_chart.renderTitle()) {
            regionG.selectAll("title").text(function (d) {
                var key = getKey(layerIndex, d);
                var value = data[key];
                return _chart.title()({key: key, value: value});
            });
        }
    }

    _chart.doRedraw = function () {
        for (var layerIndex = 0; layerIndex < _geoJsons.length; ++layerIndex) {
            plotData(layerIndex);
        }
    };

    _chart.overlayGeoJson = function (json, name, keyAccessor) {
        for (var i = 0; i < _geoJsons.length; ++i) {
            if (_geoJsons[i].name == name) {
                _geoJsons[i].data = json;
                _geoJsons[i].keyAccessor = keyAccessor;
                return _chart
            }
        }
        _geoJsons.push({name: name, data: json, keyAccessor: keyAccessor});
        return _chart;
    };

    _chart.projection = function (projection) {
        _geoPath.projection(projection);
        return _chart;
    };

    _chart.geoJsons = function () {
        return _geoJsons;
    };

    _chart.removeGeoJson = function (name) {
        var geoJsons = [];

        for (var i = 0; i < _geoJsons.length; ++i) {
            var layer = _geoJsons[i];
            if (layer.name != name) {
                geoJsons.push(layer);
            }
        }

        _geoJsons = geoJsons;

        return _chart;
    };

    return _chart.anchor(parent, chartGroup);
 };
 dc.bubbleOverlay = function(root, chartGroup) {
    var BUBBLE_OVERLAY_CLASS = "bubble-overlay";
    var BUBBLE_NODE_CLASS = "node";
    var BUBBLE_CLASS = "bubble";

    var _chart = dc.abstractBubbleChart(dc.baseChart({}));
    var _g;
    var _points = [];

    _chart.transitionDuration(750);

    _chart.radiusValueAccessor(function(d) {
        return d.value;
    });

    _chart.point = function(name, x, y) {
        _points.push({name: name, x: x, y: y});
        return _chart;
    };

    _chart.doRender = function() {
        _g = initOverlayG();

        _chart.r().range([_chart.MIN_RADIUS, _chart.width() * _chart.maxBubbleRelativeSize()]);

        initializeBubbles();

        _chart.fadeDeselectedArea();

        return _chart;
    };

    function initOverlayG() {
        _g = _chart.select("g." + BUBBLE_OVERLAY_CLASS);
        if (_g.empty())
            _g = _chart.svg().append("g").attr("class", BUBBLE_OVERLAY_CLASS);
        return _g;
    }

    function initializeBubbles() {
        var data = mapData();

        _points.forEach(function(point) {
            var nodeG = getNodeG(point, data);

            var circle = nodeG.select("circle." + BUBBLE_CLASS);

            if (circle.empty())
                circle = nodeG.append("circle")
                    .attr("class", BUBBLE_CLASS)
                    .attr("r", 0)
                    .attr("fill", _chart.initBubbleColor)
                    .on("click", _chart.onClick);

            dc.transition(circle, _chart.transitionDuration())
                .attr("r", function(d) {
                    return _chart.bubbleR(d);
                });

            _chart.doRenderLabel(nodeG);

            _chart.doRenderTitles(nodeG);
        });
    }

    function mapData() {
        var data = {};
        _chart.group().all().forEach(function(datum) {
            data[_chart.keyAccessor()(datum)] = datum;
        });
        return data;
    }

    function getNodeG(point, data) {
        var bubbleNodeClass = BUBBLE_NODE_CLASS + " " + dc.utils.nameToId(point.name);

        var nodeG = _g.select("g." + dc.utils.nameToId(point.name));

        if (nodeG.empty()) {
            nodeG = _g.append("g")
                .attr("class", bubbleNodeClass)
                .attr("transform", "translate(" + point.x + "," + point.y + ")");
        }

        nodeG.datum(data[point.name]);

        return nodeG;
    }

    _chart.doRedraw = function() {
        updateBubbles();

        _chart.fadeDeselectedArea();

        return _chart;
    };

    function updateBubbles() {
        var data = mapData();

        _points.forEach(function(point) {
            var nodeG = getNodeG(point, data);

            var circle = nodeG.select("circle." + BUBBLE_CLASS);

            dc.transition(circle, _chart.transitionDuration())
                .attr("r", function(d) {
                    return _chart.bubbleR(d);
                })
                .attr("fill", _chart.updateBubbleColor);

            _chart.doUpdateLabels(nodeG);

            _chart.doUpdateTitles(nodeG);
        });
    }

    _chart.debug = function(flag) {
        if(flag){
            var debugG = _chart.select("g." + dc.constants.DEBUG_GROUP_CLASS);

            if(debugG.empty())
                debugG = _chart.svg()
                    .append("g")
                    .attr("class", dc.constants.DEBUG_GROUP_CLASS);

            var debugText = debugG.append("text")
                .attr("x", 10)
                .attr("y", 20);

            debugG
                .append("rect")
                .attr("width", _chart.width())
                .attr("height", _chart.height())
                .on("mousemove", function() {
                    var position = d3.mouse(debugG.node());
                    var msg = position[0] + ", " + position[1];
                    debugText.text(msg);
                });
        }else{
            _chart.selectAll(".debug").remove();
        }

        return _chart;
    };

    _chart.anchor(root, chartGroup);

    return _chart;
 };dc.rowChart = function(parent, chartGroup) {

    var _g;

    var _labelOffsetX = 10;

    var _labelOffsetY = 15;

    var _gap = 5;

    var _rowCssClass = "row";

    var _chart = dc.marginable(dc.singleSelectionChart(dc.colorChart(dc.baseChart({}))));

    var _xScale;

    var _xAxis = d3.svg.axis().orient("bottom");

    _chart.doRender = function() {
        _xScale = d3.scale.linear().domain([0, d3.max(_chart.group().all(), _chart.valueAccessor())]).range([0, _chart.effectiveWidth()]);

        _chart.resetSvg();

        _g = _chart.svg()
            .append("g")
            .attr("transform", "translate(" + _chart.margins().left + "," + _chart.margins().top + ")");

        _xAxis.scale(_xScale);

        _g.append("g").attr("class", "axis")
                        .attr("transform", "translate(0, " + _chart.effectiveHeight() + ")")
                        .call(_xAxis);

        drawGridLines();
        drawChart();

        return _chart;
    };

    _chart.title(function (d) {
        return _chart.keyAccessor()(d) + ": " + _chart.valueAccessor()(d) ;
    });

    _chart.label(function (d) {
        return _chart.keyAccessor()(d);
    });

    function drawGridLines() {
        var ticks = _xAxis.tickValues() ? _xAxis.tickValues() : _xScale.ticks(_xAxis.ticks()[0]);

        var gridLineG = _g.append("g")
                          .attr("class", "grid-line vertical");

        var lines = gridLineG.selectAll("line")
                             .data(ticks);

        var linesGEnter = lines.enter()
                               .append("line")
                               .attr("x1", function (d) { return _xScale(d); })
                               .attr("y1", function (d) { return 0; })
                               .attr("x2", function (d) { return _xScale(d); })
                               .attr("y2", function (d) { return _chart.effectiveHeight(); });
    }

    function drawChart() {
        var rows = _g.selectAll("g." + _rowCssClass)
                     .data(_chart.group().all());

        createElements(rows, _chart.group().all());
        removeElements(rows);
        updateElements(rows);
    }

    function createElements(rows, rowData) {
        var rowEnter = rows.enter()
                           .append("g")
                           .attr("class", function(d, i) {
                                return _rowCssClass + " _" + i;
                           });

        rowEnter.append("rect").attr("width", 0);

        createTitles(rowEnter);

        createLabels(rowEnter);
        updateLabels(rows);
    }

    function removeElements(rows) {
        rows.exit().remove();
    }

    function updateElements(rows) {
        var n = _chart.group().all().length;

        var height = (_chart.effectiveHeight() - (n + 1) * _gap) / n;

        var rect = rows.attr("transform", function(d, i) { return "translate(0," + ((i + 1) * _gap + i * height) + ")"; })
                       .select("rect")
                           .attr("height", height)
                           .attr("fill", _chart.getColor)
                           .on("click", onClick)
                           .classed("deselected", function (d) { return (_chart.hasFilter()) ? !_chart.isSelectedRow(d) : false; })
                           .classed("selected", function (d) { return (_chart.hasFilter()) ? _chart.isSelectedRow(d) : false; });

        dc.transition(rect, _chart.transitionDuration())
               .attr("width", function(d) {
                    return _xScale(_chart.valueAccessor()(d));
               });
    }

    function createTitles(rowEnter) {
        if (_chart.renderTitle()) {
            rowEnter.append("title").text(function(d) {
                return _chart.title()(d);
            });
        }
    }

    function createLabels(rowEnter) {
        if (_chart.renderLabel()) {
            rowEnter.append("text");
        }
    }

    function updateLabels(rows) {
        if (_chart.renderLabel()) {
            rows.select("text")
                        .attr("x", _labelOffsetX)
                        .attr("y", _labelOffsetY)
                        .attr("class", function (d, i) {
                            return _rowCssClass + " _" + i;
                        })
                        .text(function(d) {
                            return _chart.label()(d);
                        });
        }
    }

    function numberOfRows() {
        return _chart.group().all().length;
    }

    function rowHeight() {
        var n = numberOfRows();
        return (_chart.effectiveHeight() - (n + 1) * _gap) / n;
    }

    function onClick(d) {
        _chart.onClick(d);
    }

    _chart.doRedraw = function() {
        drawChart();
        return _chart;
    };

    _chart.xAxis = function () {
        return _xAxis;
    };

    _chart.gap = function(g) {
        if (!arguments.length) return _gap;
        _gap = g;
        return _chart;
    };

    _chart.labelOffsetX = function (o) {
        if (!arguments.length) return _labelOffsetX;
        _labelOffset = o;
        return _chart;
    };

    _chart.labelOffsetY = function (o) {
        if (!aruguments.length) return _labelOffsetY;
        _labelOffset = o;
        return _chart;
    };

    _chart.isSelectedRow = function (d) {
        return _chart.filter() == _chart.keyAccessor()(d);
    };

    return _chart.anchor(parent, chartGroup);
 };
diff --git a/index.html b/index.html
 <!DOCTYPE html>
 <html lang='en'>
 <head>
  <meta charset='utf-8'>
  <meta content='width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0' name='viewport'>

  <title>dc.js Experiment</title>

  <script src='d3.js' type='text/javascript'></script>
  <script src='crossfilter.js' type='text/javascript'></script>
  <script src='dc.js' type='text/javascript'></script>
  <script src='jquery-1.9.1.min.js' type='text/javascript'></script>
  <script src='bootstrap.min.js' type='text/javascript'></script>

  <link href='bootstrap.min.css' rel='stylesheet' type='text/css'>
  <link href='dc.css' rel='stylesheet' type='text/css'>

  <style type="text/css"></style>
 </head>

 <body>

 <div class='container' id='main-container'>
 <div class='content'>
 <div class='container' style='font: 12px sans-serif;'>

  <div class='row'>
    <div class='span12'>
      <h3>New Zealand Earthquakes</h3>
      <div class='row'>
        <div class='pie-graph span6' id='dc-magnitude-chart'>
        <h4>Events by Magnitude</h4>
        </div>
        <div class='pie-graph span6' id='dc-depth-chart'>
 	      <h4>Events by Depth (km)</h4>
        </div>    
      </div>
    </div>
  </div>

  <div class='row'>
    <div class='span12' id='dc-time-chart'>
      <h4>Events per hour</h4>
    </div>
  </div>

  <div class='row'>
 	<div class='pie-graph span12'>
      <table class='table table-hover' id='dc-table-graph'>
        <thead>
          <tr class='header'>
            <th>DTG</th>
            <th>Lat</th>
            <th>Long</th>
            <th>Depth</th>
            <th>Magnitude</th>
            <th>Google Map</th>
            <th>OSM Map</th>
          </tr>
        </thead>
      </table>
 	</div>
  </div>

 <H5>Generated with 
  <a href="http://nickqizhu.github.io/dc.js/">dc.js</a>,
  <a href="http://square.github.io/crossfilter/">crossfilter</a>, 
  <a href="http://d3js.org/">d3.js</a> and 
  <a href="http://twitter.github.io/bootstrap/">bootstrap</a>.
 </H5>
 <p>Earthquake data via <a href="http://geonet.org.nz">Geonet</a>.</p>

 </div>
 </div>
 </div>
  
 <script>
  
 /**********************************
 * Step0: Load data from json file *
 **********************************/

 // load data from a csv file
 d3.csv("quakes.csv", function (data) {

  // format our data
  var dtgFormat = d3.time.format("%Y-%m-%dT%H:%M:%S");
  
  data.forEach(function(d) { 
    d.dtg   = dtgFormat.parse(d.origintime.substr(0,19)); 
    d.lat   = +d.latitude;
    d.long  = +d.longitude;
    d.mag   = d3.round(+d.magnitude,1);
    d.depth = d3.round(+d.depth,0);
  });

 /******************************************************
 * Step1: Create the dc.js chart objects & ling to div *
 ******************************************************/

  var magnitudeChart = dc.barChart("#dc-magnitude-chart");
  var depthChart = dc.barChart("#dc-depth-chart");
  var timeChart = dc.lineChart("#dc-time-chart");
  var dataTable = dc.dataTable("#dc-table-graph");

 /****************************************
 * 	Run the data through crossfilter    *
 ****************************************/

  var facts = crossfilter(data);  // Gets our 'facts' into crossfilter

 /******************************************************
 * Create the Dimensions                               *
 * A dimension is something to group or filter by.     *
 * Crossfilter can filter by exact value, or by range. *
 ******************************************************/

  // for Magnitude
  var magValue = facts.dimension(function (d) {
    return d.mag;       // group or filter by magnitude
  });
  var magValueGroupSum = magValue.group()
    .reduceSum(function(d) { return d.mag; });	// sums the magnitudes per magnitude
  var magValueGroupCount = magValue.group()
    .reduceCount(function(d) { return d.mag; }) // counts the number of the facts by magnitude

  // For datatable
  var timeDimension = facts.dimension(function (d) {
    return d.dtg;
  }); // group or filter by time

  // for Depth
  var depthValue = facts.dimension(function (d) {
    return d.depth;
  });
  var depthValueGroup = depthValue.group();
  
  // define a daily volume Dimension
  var volumeByDay = facts.dimension(function(d) {
    return d3.time.hour(d.dtg);
  });
  // map/reduce to group sum
  var volumeByDayGroup = volumeByDay.group()
    .reduceCount(function(d) { return d.dtg; });

 /***************************************
 * 	Step4: Create the Visualisations   *
 ***************************************/
  
  // Magnitide Bar Graph Summed
  magnitudeChart.width(480)
    .height(150)
    .margins({top: 10, right: 10, bottom: 20, left: 40})
    .dimension(magValue)								// the values across the x axis
    .group(magValueGroupSum)							// the values on the y axis
 	.transitionDuration(500)
    .centerBar(true)	
 	.gap(56)                                            // bar width Keep increasing to get right then back off.
    .x(d3.scale.linear().domain([0.5, 7.5]))
 	.elasticY(true)
 	.xAxis().tickFormat(function(v) {return v;});	

  // Depth bar graph
  depthChart.width(480)
    .height(150)
    .margins({top: 10, right: 10, bottom: 20, left: 40})
    .dimension(depthValue)
    .group(depthValueGroup)
 	.transitionDuration(500)
    .centerBar(true)	
 	.gap(1)                    // bar width Keep increasing to get right then back off.
    .x(d3.scale.linear().domain([0, 100]))
 	.elasticY(true)
 	.xAxis().tickFormat(function(v) {return v;});

  // time graph
  timeChart.width(960)
    .height(100)
    .margins({top: 10, right: 10, bottom: 20, left: 40})
    .dimension(volumeByDay)
    .group(volumeByDayGroup)
    .transitionDuration(500)
 	.elasticY(true)
    .x(d3.time.scale().domain([new Date(2013, 6, 18), new Date(2013, 6, 24)])) // scale and domain of the graph
    .xAxis();

  // Table of earthquake data
  dataTable.width(960).height(800)
    .dimension(timeDimension)
 	.group(function(d) { return "List of all earthquakes corresponding to the filters"
 	 })
 	.size(10)							// number of rows to return
    .columns([
      function(d) { return d.dtg; },
      function(d) { return d.lat; },
      function(d) { return d.long; },
      function(d) { return d.depth; },
      function(d) { return d.mag; },
 	  function(d) { return '<a href=\"http://maps.google.com/maps?z=11&t=m&q=loc:' + d.lat + '+' + d.long +"\" target=\"_blank\">Google Map</a>"},
 	  function(d) { return '<a href=\"http://www.openstreetmap.org/?mlat=' + d.lat + '&mlon=' + d.long +'&zoom=11'+ "\" target=\"_blank\"> OSM Map</a>"}
    ])
    .sortBy(function(d){ return d.dtg; })
    .order(d3.ascending);

 /****************************
 * Step6: Render the Charts  *
 ****************************/
 			
  dc.renderAll();
  
 });
  
 </script>
    
 </body>
 </html>
diff --git a/jquery-1.9.1.min.js b/jquery-1.9.1.min.js
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diff --git a/quakes.csv b/quakes.csv
diff --git a/thumbnail.png b/thumbnail.png
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	float: left;
	}

	.dc-chart rect.bar {
	stroke: none;
	fill: steelblue;
	}

	.dc-chart rect.bar:hover {
	fill-opacity: .5;
	}

	.dc-chart rect.stack1 {
	stroke: none;
	fill: red;
	}

	.dc-chart rect.stack2 {
	stroke: none;
	fill: green;
	}

	.dc-chart rect.deselected {
	stroke: none;
	fill: #ccc;
	}

	.dc-chart .sub .bar {
	stroke: none;
	fill: #ccc;
	}

	.dc-chart .pie-slice {
	fill: white;
	font-size: 12px;
	cursor: pointer;
	}

	.dc-chart .pie-slice :hover{
	fill-opacity: .8;
	}

	.dc-chart .selected path{
	stroke-width: 3;
	stroke: #ccc;
	fill-opacity: 1;
	}

	.dc-chart .deselected path{
	strok: none;
	fill-opacity: .5;
	fill: #ccc;
	}

	.dc-chart .axis path, .axis line {
	fill: none;
	stroke: #000;
	shape-rendering: crispEdges;
	}

	.dc-chart .axis text {
	font: 10px sans-serif;
	}

	.dc-chart .grid-line line {
	fill: none;
	stroke: #ccc;
	opacity: .5;
	shape-rendering: crispEdges;
	}

	.dc-chart .brush rect.background {
	z-index: -999;
	}

	.dc-chart .brush rect.extent {
	fill: steelblue;
	fill-opacity: .125;
	}

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	fill: #eee;
	stroke: #666;
	}

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	fill: none;
	stroke: steelblue;
	stroke-width: 1.5px;
	}

	.dc-chart circle.dot{
	fill: steelblue;
	}

	.dc-chart g.stack1 path.line {
	stroke: green;
	}

	.dc-chart g.stack1 circle.dot{
	fill: green;
	}

	.dc-chart g.stack2 path.line {
	stroke: red;
	}

	.dc-chart g.stack2 circle.dot{
	fill: red;
	}

	.dc-chart g.dc-tooltip path{
	fill: none;
	stroke: grey;
	stroke-opacity: .8;
	}

	.dc-chart path.area {
	fill: steelblue;
	fill-opacity: .3;
	stroke: none;
	}

	.dc-chart g.stack1 path.area {
	fill: green;
	}

	.dc-chart g.stack2 path.area {
	fill: red;
	}

	.dc-chart .node {
	font-size: 0.7em;
	cursor: pointer;
	}

	.dc-chart .node :hover{
	fill-opacity: .8;
	}

	.dc-chart .selected circle {
	stroke-width: 3;
	stroke: #ccc;
	fill-opacity: 1;
	}

	.dc-chart .deselected circle {
	strok: none;
	fill-opacity: .5;
	fill: #ccc;
	}

	.dc-chart .bubble {
	stroke: none;
	fill-opacity: 0.6;
	}

	.dc-data-count {
	float: right;
	margin-top: 15px;
	margin-right: 15px;
	}

	.dc-data-count .filter-count {
	color: #3182bd;
	font-weight: bold;
	}

	.dc-data-count .total-count {
	color: #3182bd;
	font-weight: bold;
	}

	.dc-data-table {}

	.dc-chart g.state{
	cursor: pointer;
	}

	.dc-chart g.state :hover{
	fill-opacity: .8;
	}

	.dc-chart g.state path {
	stroke: white;
	}

	.dc-chart g.selected path {
	}

	.dc-chart g.deselected path {
	fill: grey;
	}

	.dc-chart g.selected text {
	}

	.dc-chart g.deselected text {
	display: none;
	}

	.dc-chart g.county path {
	stroke: white;
	fill: none;
	}

	.dc-chart g.debug rect{
	fill: blue;
	fill-opacity: .2;
	}

	.dc-chart g.row rect {
	fill-opacity: 0.8;
	cursor: pointer;
	}

	.dc-chart g.row rect:hover {
	fill-opacity: 0.6;
	}

	.dc-chart g.row text {
	fill: black; /modified from white by Eamonn O'Loughlin /
	font-size: 12px;
	}
	<!DOCTYPE html>
	<html lang='en'>
	<head>
	<meta charset='utf-8'>
	<meta content='width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0' name='viewport'>

	<title>dc.js Experiment</title>

	<script src='d3.js' type='text/javascript'></script>
	<script src='crossfilter.js' type='text/javascript'></script>
	<script src='dc.js' type='text/javascript'></script>
	<script src='jquery-1.9.1.min.js' type='text/javascript'></script>
	<script src='bootstrap.min.js' type='text/javascript'></script>

	<link href='bootstrap.min.css' rel='stylesheet' type='text/css'>
	<link href='dc.css' rel='stylesheet' type='text/css'>

	<style type="text/css"></style>
	</head>

	<body>

	<div class='container' id='main-container'>
	<div class='content'>
	<div class='container' style='font: 12px sans-serif;'>

	<div class='row'>
	<div class='span12'>
	<h3>New Zealand Earthquakes</h3>
	<div class='row'>
	<div class='pie-graph span6' id='dc-magnitude-chart'>
	<h4>Events by Magnitude</h4>
	</div>
	<div class='pie-graph span6' id='dc-depth-chart'>
	<h4>Events by Depth (km)</h4>
	</div>
	</div>
	</div>
	</div>

	<div class='row'>
	<div class='span12' id='dc-time-chart'>
	<h4>Events per hour</h4>
	</div>
	</div>

	<div class='row'>
	<div class='pie-graph span12'>
	<table class='table table-hover' id='dc-table-graph'>
	<thead>
	<tr class='header'>
	<th>DTG</th>
	<th>Lat</th>
	<th>Long</th>
	<th>Depth</th>
	<th>Magnitude</th>
	<th>Google Map</th>
	<th>OSM Map</th>
	</tr>
	</thead>
	</table>
	</div>
	</div>

	<H5>Generated with
	<a href="http://nickqizhu.github.io/dc.js/">dc.js</a>,
	<a href="http://square.github.io/crossfilter/">crossfilter</a>,
	<a href="http://d3js.org/">d3.js</a> and
	<a href="http://twitter.github.io/bootstrap/">bootstrap</a>.
	</H5>
	<p>Earthquake data via <a href="http://geonet.org.nz">Geonet</a>.</p>

	</div>
	</div>
	</div>

	<script>

	/**********************************
	* Step0: Load data from json file *
	**********************************/

	// load data from a csv file
	d3.csv("quakes.csv", function (data) {

	// format our data
	var dtgFormat = d3.time.format("%Y-%m-%dT%H:%M:%S");

	data.forEach(function(d) {
	d.dtg = dtgFormat.parse(d.origintime.substr(0,19));
	d.lat = +d.latitude;
	d.long = +d.longitude;
	d.mag = d3.round(+d.magnitude,1);
	d.depth = d3.round(+d.depth,0);
	});

	/******************************************************
	* Step1: Create the dc.js chart objects & ling to div *
	******************************************************/

	var magnitudeChart = dc.barChart("#dc-magnitude-chart");
	var depthChart = dc.barChart("#dc-depth-chart");
	var timeChart = dc.lineChart("#dc-time-chart");
	var dataTable = dc.dataTable("#dc-table-graph");

	/****************************************
	* Run the data through crossfilter *
	****************************************/

	var facts = crossfilter(data); // Gets our 'facts' into crossfilter

	/******************************************************
	* Create the Dimensions *
	* A dimension is something to group or filter by. *
	* Crossfilter can filter by exact value, or by range. *
	******************************************************/

	// for Magnitude
	var magValue = facts.dimension(function (d) {
	return d.mag; // group or filter by magnitude
	});
	var magValueGroupSum = magValue.group()
	.reduceSum(function(d) { return d.mag; }); // sums the magnitudes per magnitude
	var magValueGroupCount = magValue.group()
	.reduceCount(function(d) { return d.mag; }) // counts the number of the facts by magnitude

	// For datatable
	var timeDimension = facts.dimension(function (d) {
	return d.dtg;
	}); // group or filter by time

	// for Depth
	var depthValue = facts.dimension(function (d) {
	return d.depth;
	});
	var depthValueGroup = depthValue.group();

	// define a daily volume Dimension
	var volumeByDay = facts.dimension(function(d) {
	return d3.time.hour(d.dtg);
	});
	// map/reduce to group sum
	var volumeByDayGroup = volumeByDay.group()
	.reduceCount(function(d) { return d.dtg; });

	/***************************************
	* Step4: Create the Visualisations *
	***************************************/

	// Magnitide Bar Graph Summed
	magnitudeChart.width(480)
	.height(150)
	.margins({top: 10, right: 10, bottom: 20, left: 40})
	.dimension(magValue) // the values across the x axis
	.group(magValueGroupSum) // the values on the y axis
	.transitionDuration(500)
	.centerBar(true)
	.gap(56) // bar width Keep increasing to get right then back off.
	.x(d3.scale.linear().domain([0.5, 7.5]))
	.elasticY(true)
	.xAxis().tickFormat(function(v) {return v;});

	// Depth bar graph
	depthChart.width(480)
	.height(150)
	.margins({top: 10, right: 10, bottom: 20, left: 40})
	.dimension(depthValue)
	.group(depthValueGroup)
	.transitionDuration(500)
	.centerBar(true)
	.gap(1) // bar width Keep increasing to get right then back off.
	.x(d3.scale.linear().domain([0, 100]))
	.elasticY(true)
	.xAxis().tickFormat(function(v) {return v;});

	// time graph
	timeChart.width(960)
	.height(100)
	.margins({top: 10, right: 10, bottom: 20, left: 40})
	.dimension(volumeByDay)
	.group(volumeByDayGroup)
	.transitionDuration(500)
	.elasticY(true)
	.x(d3.time.scale().domain([new Date(2013, 6, 18), new Date(2013, 6, 24)])) // scale and domain of the graph
	.xAxis();

	// Table of earthquake data
	dataTable.width(960).height(800)
	.dimension(timeDimension)
	.group(function(d) { return "List of all earthquakes corresponding to the filters"
	})
	.size(10) // number of rows to return
	.columns([
	function(d) { return d.dtg; },
	function(d) { return d.lat; },
	function(d) { return d.long; },
	function(d) { return d.depth; },
	function(d) { return d.mag; },
	function(d) { return '<a href=\"http://maps.google.com/maps?z=11&t=m&q=loc:' + d.lat + '+' + d.long +"\" target=\"_blank\">Google Map</a>"},
	function(d) { return '<a href=\"http://www.openstreetmap.org/?mlat=' + d.lat + '&mlon=' + d.long +'&zoom=11'+ "\" target=\"_blank\"> OSM Map</a>"}
	])
	.sortBy(function(d){ return d.dtg; })
	.order(d3.ascending);

	/****************************
	* Step6: Render the Charts *
	****************************/

	dc.renderAll();

	});

	</script>

	</body>
	</html>