saraquigley · August 29, 2015 14:02
diff --git a/Readme.md b/Readme.md
diff --git a/idg.csv b/idg.csv
diff --git a/index.html b/index.html
 <!DOCTYPE html>
 <meta charset="utf-8">
 <title>sankey Experiment</title>
 <style>

 
 .node rect {
  cursor: move;
  fill-opacity: .9;
  shape-rendering: crispEdges;
 }
 
 .node text {
  pointer-events: none;
  text-shadow: 0 1px 0 #fff;
 }
 
 .link {
  fill: none;
  stroke: #000;
  stroke-opacity: .2;
 }
 
 .link:hover {
  stroke-opacity: .5;
 }
 
 </style>
 <body>
 
 <p id="chart">
 
 <script src="http://d3js.org/d3.v3.js"></script>
 <script src="sankey.js"></script>
 <script>
  
 var units = "Students";
 
 var margin = {top: 50, right: 10, bottom: 10, left: 10},
    width = 1400 - margin.left - margin.right,
    height = 740 - margin.top - margin.bottom;
 
 var formatNumber = d3.format(",.0f"),    // zero decimal places
    format = function(d) { return formatNumber(d) + " " + units; },
    color = d3.scale.category20();
 
 // append the svg canvas to the page
 var svg = d3.select("#chart").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
  .append("g")
    .attr("transform", 
          "translate(" + margin.left + "," + margin.top + ")");
 
 // Set the sankey diagram properties
 var sankey = d3.sankey()
    .nodeWidth(36)
    .nodePadding(10)
    .size([width, height]);
 
 var path = sankey.link();
 
 // load the data with d3.csv instead of d3.json
 //for another much simpler example uncomment the below
 // d3.csv("d3noob_example.csv", function(error, data) {
 d3.csv("idg.csv", function(error, data) {
 		//set up graph in same style as original example but empty
  		graph = {"nodes" : [], "links" : []};
  
                data.forEach(function (d) {
                    graph.nodes.push({ "name": d.source });
                    graph.nodes.push({ "name": d.target });

                    graph.links.push({ "source": d.source, "target": d.target, "value": +d.value });
                });

                //thanks Mike Bostock https://groups.google.com/d/msg/d3-js/pl297cFtIQk/Eso4q_eBu1IJ
                //this handy little function returns only the distinct / unique nodes
                graph.nodes = d3.keys(d3.nest()
                         .key(function (d) { return d.name; })
                         .map(graph.nodes));

                //it appears d3 with force layout wants a numeric source and target
                //so loop through each link replacing the text with its index from node
                graph.links.forEach(function (d, i) {
                    graph.links[i].source = graph.nodes.indexOf(graph.links[i].source);
                    graph.links[i].target = graph.nodes.indexOf(graph.links[i].target);
                });

                //now loop through each nodes to make nodes an array of objects rather than an array of strings
                graph.nodes.forEach(function (d, i) {
                    graph.nodes[i] = { "name": d };
                });
 
  sankey
      .nodes(graph.nodes)
      .links(graph.links)
      .layout(32);
 
 // add in the links
  var link = svg.append("g").selectAll(".link")
      .data(graph.links)
    .enter().append("path")
      .attr("class", "link")
      .attr("d", path)
      .style("stroke-width", function(d) { return Math.max(1, d.dy); })
      .sort(function(a, b) { return b.dy - a.dy; });
 
 // add the link titles
  link.append("title")
        .text(function(d) {
      	return d.source.name + " → " + 
                d.target.name + "\n" + format(d.value); });
 
 // add in the nodes
  var node = svg.append("g").selectAll(".node")
      .data(graph.nodes)
    .enter().append("g")
      .attr("class", "node")
      .attr("transform", function(d) { 
 		  return "translate(" + d.x + "," + d.y + ")"; })
    .call(d3.behavior.drag()
      .origin(function(d) { return d; })
      .on("dragstart", function() { 
 		  this.parentNode.appendChild(this); })
      .on("drag", dragmove));
 
 // add the rectangles for the nodes
  node.append("rect")
      .attr("height", function(d) { return d.dy; })
      .attr("width", sankey.nodeWidth())
      .style("fill", function(d) { 
 		  return d.color = color(d.name.replace(/ .*/, "")); })
      .style("stroke", function(d) { 
 		  return d3.rgb(d.color).darker(2); })
    .append("title")
      .text(function(d) { 
 		  return d.name + "\n" + format(d.value); });
 
 // add in the title for the nodes
  node.append("text")
      .attr("x", -6)
      .attr("y", function(d) { return d.dy / 2; })
      .attr("dy", ".35em")
      .attr("text-anchor", "end")
      .attr("transform", null)
      .text(function(d) { return d.name; })
    .filter(function(d) { return d.x < width / 2; })
      .attr("x", 6 + sankey.nodeWidth())
      .attr("text-anchor", "start");
 
 // the function for moving the nodes
  function dragmove(d) {
    d3.select(this).attr("transform", 
        "translate(" + (
        	   d.x = Math.max(0, Math.min(width - d.dx, d3.event.x))
        	) + "," + (
                   d.y = Math.max(0, Math.min(height - d.dy, d3.event.y))
            ) + ")");
    sankey.relayout();
    link.attr("d", path);
  }
 });
 
 </script>
 
 </body>
 </html>
diff --git a/sankey.js b/sankey.js
 //from Mike Bostock

 d3.sankey = function() {
  var sankey = {},
      nodeWidth = 24,
      nodePadding = 8,
      size = [1, 1],
      nodes = [],
      links = [];
 
  sankey.nodeWidth = function(_) {
    if (!arguments.length) return nodeWidth;
    nodeWidth = +_;
    return sankey;
  };
 
  sankey.nodePadding = function(_) {
    if (!arguments.length) return nodePadding;
    nodePadding = +_;
    return sankey;
  };
 
  sankey.nodes = function(_) {
    if (!arguments.length) return nodes;
    nodes = _;
    return sankey;
  };
 
  sankey.links = function(_) {
    if (!arguments.length) return links;
    links = _;
    return sankey;
  };
 
  sankey.size = function(_) {
    if (!arguments.length) return size;
    size = _;
    return sankey;
  };
 
  sankey.layout = function(iterations) {
    computeNodeLinks();
    computeNodeValues();
    computeNodeBreadths();
    computeNodeDepths(iterations);
    computeLinkDepths();
    return sankey;
  };
 
  sankey.relayout = function() {
    computeLinkDepths();
    return sankey;
  };
 
  sankey.link = function() {
    var curvature = .5;
 
    function link(d) {
      var x0 = d.source.x + d.source.dx,
          x1 = d.target.x,
          xi = d3.interpolateNumber(x0, x1),
          x2 = xi(curvature),
          x3 = xi(1 - curvature),
          y0 = d.source.y + d.sy + d.dy / 2,
          y1 = d.target.y + d.ty + d.dy / 2;
      return "M" + x0 + "," + y0
           + "C" + x2 + "," + y0
           + " " + x3 + "," + y1
           + " " + x1 + "," + y1;
    }
 
    link.curvature = function(_) {
      if (!arguments.length) return curvature;
      curvature = +_;
      return link;
    };
 
    return link;
  };
 
  // Populate the sourceLinks and targetLinks for each node.
  // Also, if the source and target are not objects, assume they are indices.
  function computeNodeLinks() {
    nodes.forEach(function(node) {
      node.sourceLinks = [];
      node.targetLinks = [];
    });
    links.forEach(function(link) {
      var source = link.source,
          target = link.target;
      if (typeof source === "number") source = link.source = nodes[link.source];
      if (typeof target === "number") target = link.target = nodes[link.target];
      source.sourceLinks.push(link);
      target.targetLinks.push(link);
    });
  }
 
  // Compute the value (size) of each node by summing the associated links.
  function computeNodeValues() {
    nodes.forEach(function(node) {
      node.value = Math.max(
        d3.sum(node.sourceLinks, value),
        d3.sum(node.targetLinks, value)
      );
    });
  }
 
  // Iteratively assign the breadth (x-position) for each node.
  // Nodes are assigned the maximum breadth of incoming neighbors plus one;
  // nodes with no incoming links are assigned breadth zero, while
  // nodes with no outgoing links are assigned the maximum breadth.
  function computeNodeBreadths() {
    var remainingNodes = nodes,
        nextNodes,
        x = 0;
 
    while (remainingNodes.length) {
      nextNodes = [];
      remainingNodes.forEach(function(node) {
        node.x = x;
        node.dx = nodeWidth;
        node.sourceLinks.forEach(function(link) {
          nextNodes.push(link.target);
        });
      });
      remainingNodes = nextNodes;
      ++x;
    }
 
    //
    moveSinksRight(x);
    scaleNodeBreadths((size[0] - nodeWidth) / (x - 1));
  }
 
  function moveSourcesRight() {
    nodes.forEach(function(node) {
      if (!node.targetLinks.length) {
        node.x = d3.min(node.sourceLinks, function(d) { return d.target.x; }) - 1;
      }
    });
  }
 
  function moveSinksRight(x) {
    nodes.forEach(function(node) {
      if (!node.sourceLinks.length) {
        node.x = x - 1;
      }
    });
  }
 
  function scaleNodeBreadths(kx) {
    nodes.forEach(function(node) {
      node.x *= kx;
    });
  }
 
  function computeNodeDepths(iterations) {
    var nodesByBreadth = d3.nest()
        .key(function(d) { return d.x; })
        .sortKeys(d3.ascending)
        .entries(nodes)
        .map(function(d) { return d.values; });
 
    //
    initializeNodeDepth();
    resolveCollisions();
    for (var alpha = 1; iterations > 0; --iterations) {
      relaxRightToLeft(alpha *= .99);
      resolveCollisions();
      relaxLeftToRight(alpha);
      resolveCollisions();
    }
 
    function initializeNodeDepth() {
      var ky = d3.min(nodesByBreadth, function(nodes) {
        return (size[1] - (nodes.length - 1) * nodePadding) / d3.sum(nodes, value);
      });
 
      nodesByBreadth.forEach(function(nodes) {
        nodes.forEach(function(node, i) {
          node.y = i;
          node.dy = node.value * ky;
        });
      });
 
      links.forEach(function(link) {
        link.dy = link.value * ky;
      });
    }
 
    function relaxLeftToRight(alpha) {
      nodesByBreadth.forEach(function(nodes, breadth) {
        nodes.forEach(function(node) {
          if (node.targetLinks.length) {
            var y = d3.sum(node.targetLinks, weightedSource) / d3.sum(node.targetLinks, value);
            node.y += (y - center(node)) * alpha;
          }
        });
      });
 
      function weightedSource(link) {
        return center(link.source) * link.value;
      }
    }
 
    function relaxRightToLeft(alpha) {
      nodesByBreadth.slice().reverse().forEach(function(nodes) {
        nodes.forEach(function(node) {
          if (node.sourceLinks.length) {
            var y = d3.sum(node.sourceLinks, weightedTarget) / d3.sum(node.sourceLinks, value);
            node.y += (y - center(node)) * alpha;
          }
        });
      });
 
      function weightedTarget(link) {
        return center(link.target) * link.value;
      }
    }
 
    function resolveCollisions() {
      nodesByBreadth.forEach(function(nodes) {
        var node,
            dy,
            y0 = 0,
            n = nodes.length,
            i;
 
        // Push any overlapping nodes down.
        nodes.sort(ascendingDepth);
        for (i = 0; i < n; ++i) {
          node = nodes[i];
          dy = y0 - node.y;
          if (dy > 0) node.y += dy;
          y0 = node.y + node.dy + nodePadding;
        }
 
        // If the bottommost node goes outside the bounds, push it back up.
        dy = y0 - nodePadding - size[1];
        if (dy > 0) {
          y0 = node.y -= dy;
 
          // Push any overlapping nodes back up.
          for (i = n - 2; i >= 0; --i) {
            node = nodes[i];
            dy = node.y + node.dy + nodePadding - y0;
            if (dy > 0) node.y -= dy;
            y0 = node.y;
          }
        }
      });
    }
 
    function ascendingDepth(a, b) {
      return a.y - b.y;
    }
  }
 
  function computeLinkDepths() {
    nodes.forEach(function(node) {
      node.sourceLinks.sort(ascendingTargetDepth);
      node.targetLinks.sort(ascendingSourceDepth);
    });
    nodes.forEach(function(node) {
      var sy = 0, ty = 0;
      node.sourceLinks.forEach(function(link) {
        link.sy = sy;
        sy += link.dy;
      });
      node.targetLinks.forEach(function(link) {
        link.ty = ty;
        ty += link.dy;
      });
    });
 
    function ascendingSourceDepth(a, b) {
      return a.source.y - b.source.y;
    }
 
    function ascendingTargetDepth(a, b) {
      return a.target.y - b.target.y;
    }
  }
 
  function center(node) {
    return node.y + node.dy / 2;
  }
 
  function value(link) {
    return link.value;
  }
 
  return sankey;
 };
diff --git a/thumbnail.png b/thumbnail.png
source	target	value
iClg of Chemistry	dClg of Chemistry	247
iClg of Engineering	dClg of Chemistry	1
iClg of Engineering	dClg of Engineering	757
iClg of Env Design	dClg of Env Design	219
iClg of Natural Resources	dClg of Chemistry	2
iClg of Natural Resources	dClg of Engineering	4
iClg of Natural Resources	dClg of Env Design	2
iClg of Natural Resources	dClg of Natural Resources	388
iClg of Natural Resources	dHaas School of Business	1
iClg of Natural Resources	dL&S-Administered Programs	5
iClg of Natural Resources	dL&S-Arts & Humanities Div	7
iClg of Natural Resources	dL&S-Bio Sciences Div	9
iClg of Natural Resources	dL&S-Math & Phys Sci Div	1
iClg of Natural Resources	dL&S-Social Sciences Div	29
iClg of Natural Resources	dL&S-Undergraduate Div	12
iClg of Natural Resources	dNA	7
iClg of Natural Resources	dOther EVCP Programs	5
iHaas School of Business	dHaas School of Business	100
iL&S-Administered Programs	dClg of Chemistry	10
iL&S-Administered Programs	dClg of Engineering	4
iL&S-Administered Programs	dClg of Env Design	1
iL&S-Administered Programs	dClg of Natural Resources	5
iL&S-Administered Programs	dHaas School of Business	2
iL&S-Administered Programs	dL&S-Administered Programs	102
iL&S-Administered Programs	dL&S-Arts & Humanities Div	15
iL&S-Administered Programs	dL&S-Bio Sciences Div	11
iL&S-Administered Programs	dL&S-Math & Phys Sci Div	13
iL&S-Administered Programs	dL&S-Social Sciences Div	29
iL&S-Administered Programs	dL&S-Undergraduate Div	12
iL&S-Administered Programs	dNA	13
iL&S-Administered Programs	dOther EVCP Programs	18
iL&S-Arts & Humanities Div	dClg of Env Design	2
iL&S-Arts & Humanities Div	dClg of Natural Resources	6
iL&S-Arts & Humanities Div	dHaas School of Business	4
iL&S-Arts & Humanities Div	dL&S-Administered Programs	27
iL&S-Arts & Humanities Div	dL&S-Arts & Humanities Div	516
iL&S-Arts & Humanities Div	dL&S-Bio Sciences Div	8
iL&S-Arts & Humanities Div	dL&S-Math & Phys Sci Div	3
iL&S-Arts & Humanities Div	dL&S-Social Sciences Div	107
iL&S-Arts & Humanities Div	dL&S-Undergraduate Div	65
iL&S-Arts & Humanities Div	dNA	27
iL&S-Arts & Humanities Div	dOther EVCP Programs	39
iL&S-Bio Sciences Div	dClg of Chemistry	9
iL&S-Bio Sciences Div	dClg of Engineering	10
iL&S-Bio Sciences Div	dClg of Natural Resources	28
iL&S-Bio Sciences Div	dHaas School of Business	10
iL&S-Bio Sciences Div	dL&S-Administered Programs	80
iL&S-Bio Sciences Div	dL&S-Arts & Humanities Div	47
iL&S-Bio Sciences Div	dL&S-Bio Sciences Div	390
iL&S-Bio Sciences Div	dL&S-Math & Phys Sci Div	11
iL&S-Bio Sciences Div	dL&S-Social Sciences Div	75
iL&S-Bio Sciences Div	dL&S-Undergraduate Div	19
iL&S-Bio Sciences Div	dNA	14
iL&S-Bio Sciences Div	dOther EVCP Programs	75
iL&S-Math & Phys Sci Div	dClg of Chemistry	1
iL&S-Math & Phys Sci Div	dClg of Engineering	9
iL&S-Math & Phys Sci Div	dClg of Env Design	3
iL&S-Math & Phys Sci Div	dClg of Natural Resources	7
iL&S-Math & Phys Sci Div	dHaas School of Business	1
iL&S-Math & Phys Sci Div	dL&S-Administered Programs	28
iL&S-Math & Phys Sci Div	dL&S-Arts & Humanities Div	17
iL&S-Math & Phys Sci Div	dL&S-Bio Sciences Div	10
iL&S-Math & Phys Sci Div	dL&S-Math & Phys Sci Div	197
iL&S-Math & Phys Sci Div	dL&S-Social Sciences Div	47
iL&S-Math & Phys Sci Div	dL&S-Undergraduate Div	12
iL&S-Math & Phys Sci Div	dNA	18
iL&S-Math & Phys Sci Div	dOther EVCP Programs	42
iL&S-Social Sciences Div	dClg of Chemistry	1
iL&S-Social Sciences Div	dClg of Engineering	2
iL&S-Social Sciences Div	dClg of Env Design	4
iL&S-Social Sciences Div	dClg of Natural Resources	12
iL&S-Social Sciences Div	dHaas School of Business	25
iL&S-Social Sciences Div	dL&S-Administered Programs	81
iL&S-Social Sciences Div	dL&S-Arts & Humanities Div	73
iL&S-Social Sciences Div	dL&S-Bio Sciences Div	15
iL&S-Social Sciences Div	dL&S-Math & Phys Sci Div	8
iL&S-Social Sciences Div	dL&S-Social Sciences Div	738
iL&S-Social Sciences Div	dL&S-Undergraduate Div	109
iL&S-Social Sciences Div	dNA	18
iL&S-Social Sciences Div	dOther EVCP Programs	39
iL&S-Undeclared	dClg of Chemistry	12
iL&S-Undeclared	dClg of Engineering	15
iL&S-Undeclared	dClg of Env Design	14
iL&S-Undeclared	dClg of Natural Resources	34
iL&S-Undeclared	dHaas School of Business	118
iL&S-Undeclared	dL&S-Administered Programs	192
iL&S-Undeclared	dL&S-Arts & Humanities Div	161
iL&S-Undeclared	dL&S-Bio Sciences Div	155
iL&S-Undeclared	dL&S-Math & Phys Sci Div	41
iL&S-Undeclared	dL&S-Social Sciences Div	447
iL&S-Undeclared	dL&S-Undergraduate Div	275
iL&S-Undeclared	dNA	60
iL&S-Undeclared	dOther EVCP Programs	159
iL&S-Undergraduate Div	dClg of Engineering	1
iL&S-Undergraduate Div	dClg of Natural Resources	4
iL&S-Undergraduate Div	dHaas School of Business	2
iL&S-Undergraduate Div	dL&S-Administered Programs	22
iL&S-Undergraduate Div	dL&S-Arts & Humanities Div	28
iL&S-Undergraduate Div	dL&S-Bio Sciences Div	5
iL&S-Undergraduate Div	dL&S-Math & Phys Sci Div	3
iL&S-Undergraduate Div	dL&S-Social Sciences Div	66
iL&S-Undergraduate Div	dL&S-Undergraduate Div	218
iL&S-Undergraduate Div	dNA	10
iL&S-Undergraduate Div	dOther EVCP Programs	15
iNA	dClg of Chemistry	2
iNA	dClg of Engineering	5
iNA	dClg of Natural Resources	3
iNA	dL&S-Administered Programs	1
iNA	dL&S-Social Sciences Div	2
iNA	dL&S-Undergraduate Div	2
iNA	dNA	2
dClg of Chemistry	gClg of Chemistry	183
dClg of Chemistry	gClg of Engineering	12
dClg of Chemistry	gClg of Natural Resources	7
dClg of Chemistry	gHaas School of Business	1
dClg of Chemistry	gL&S-Administered Programs	7
dClg of Chemistry	gL&S-Arts & Humanities Div	7
dClg of Chemistry	gL&S-Bio Sciences Div	21
dClg of Chemistry	gL&S-Math & Phys Sci Div	7
dClg of Chemistry	gL&S-Social Sciences Div	6
dClg of Chemistry	gL&S-Undergraduate Div	5
dClg of Chemistry	gNA	29
dClg of Engineering	gClg of Chemistry	3
dClg of Engineering	gClg of Engineering	686
dClg of Engineering	gClg of Env Design	4
dClg of Engineering	gClg of Natural Resources	3
dClg of Engineering	gHaas School of Business	5
dClg of Engineering	gL&S-Administered Programs	6
dClg of Engineering	gL&S-Arts & Humanities Div	6
dClg of Engineering	gL&S-Bio Sciences Div	8
dClg of Engineering	gL&S-Math & Phys Sci Div	16
dClg of Engineering	gL&S-Social Sciences Div	17
dClg of Engineering	gL&S-Undergraduate Div	5
dClg of Engineering	gNA	48
dClg of Env Design	gClg of Engineering	8
dClg of Env Design	gClg of Env Design	170
dClg of Env Design	gClg of Natural Resources	5
dClg of Env Design	gHaas School of Business	2
dClg of Env Design	gL&S-Administered Programs	3
dClg of Env Design	gL&S-Arts & Humanities Div	8
dClg of Env Design	gL&S-Bio Sciences Div	4
dClg of Env Design	gL&S-Math & Phys Sci Div	5
dClg of Env Design	gL&S-Social Sciences Div	16
dClg of Env Design	gL&S-Undergraduate Div	7
dClg of Env Design	gNA	17
dClg of Natural Resources	gClg of Engineering	1
dClg of Natural Resources	gClg of Env Design	2
dClg of Natural Resources	gClg of Natural Resources	377
dClg of Natural Resources	gHaas School of Business	2
dClg of Natural Resources	gL&S-Administered Programs	8
dClg of Natural Resources	gL&S-Arts & Humanities Div	5
dClg of Natural Resources	gL&S-Bio Sciences Div	15
dClg of Natural Resources	gL&S-Math & Phys Sci Div	7
dClg of Natural Resources	gL&S-Social Sciences Div	22
dClg of Natural Resources	gL&S-Undergraduate Div	16
dClg of Natural Resources	gNA	32
dHaas School of Business	gClg of Natural Resources	3
dHaas School of Business	gHaas School of Business	225
dHaas School of Business	gL&S-Administered Programs	4
dHaas School of Business	gL&S-Arts & Humanities Div	5
dHaas School of Business	gL&S-Bio Sciences Div	3
dHaas School of Business	gL&S-Math & Phys Sci Div	9
dHaas School of Business	gL&S-Social Sciences Div	11
dHaas School of Business	gL&S-Undergraduate Div	2
dHaas School of Business	gNA	1
dL&S-Administered Programs	gClg of Chemistry	1
dL&S-Administered Programs	gClg of Engineering	1
dL&S-Administered Programs	gClg of Env Design	1
dL&S-Administered Programs	gClg of Natural Resources	4
dL&S-Administered Programs	gHaas School of Business	7
dL&S-Administered Programs	gL&S-Administered Programs	443
dL&S-Administered Programs	gL&S-Arts & Humanities Div	7
dL&S-Administered Programs	gL&S-Bio Sciences Div	12
dL&S-Administered Programs	gL&S-Math & Phys Sci Div	4
dL&S-Administered Programs	gL&S-Social Sciences Div	31
dL&S-Administered Programs	gL&S-Undergraduate Div	6
dL&S-Administered Programs	gNA	21
dL&S-Arts & Humanities Div	gClg of Env Design	2
dL&S-Arts & Humanities Div	gClg of Natural Resources	4
dL&S-Arts & Humanities Div	gHaas School of Business	7
dL&S-Arts & Humanities Div	gL&S-Administered Programs	9
dL&S-Arts & Humanities Div	gL&S-Arts & Humanities Div	687
dL&S-Arts & Humanities Div	gL&S-Bio Sciences Div	20
dL&S-Arts & Humanities Div	gL&S-Math & Phys Sci Div	3
dL&S-Arts & Humanities Div	gL&S-Social Sciences Div	34
dL&S-Arts & Humanities Div	gL&S-Undergraduate Div	39
dL&S-Arts & Humanities Div	gNA	59
dL&S-Bio Sciences Div	gClg of Natural Resources	4
dL&S-Bio Sciences Div	gHaas School of Business	3
dL&S-Bio Sciences Div	gL&S-Administered Programs	6
dL&S-Bio Sciences Div	gL&S-Arts & Humanities Div	10
dL&S-Bio Sciences Div	gL&S-Bio Sciences Div	553
dL&S-Bio Sciences Div	gL&S-Math & Phys Sci Div	6
dL&S-Bio Sciences Div	gL&S-Social Sciences Div	5
dL&S-Bio Sciences Div	gL&S-Undergraduate Div	1
dL&S-Bio Sciences Div	gNA	15
dL&S-Math & Phys Sci Div	gClg of Engineering	1
dL&S-Math & Phys Sci Div	gClg of Natural Resources	1
dL&S-Math & Phys Sci Div	gHaas School of Business	1
dL&S-Math & Phys Sci Div	gL&S-Administered Programs	14
dL&S-Math & Phys Sci Div	gL&S-Arts & Humanities Div	6
dL&S-Math & Phys Sci Div	gL&S-Bio Sciences Div	4
dL&S-Math & Phys Sci Div	gL&S-Math & Phys Sci Div	230
dL&S-Math & Phys Sci Div	gL&S-Social Sciences Div	7
dL&S-Math & Phys Sci Div	gL&S-Undergraduate Div	2
dL&S-Math & Phys Sci Div	gNA	11
dL&S-Social Sciences Div	gClg of Natural Resources	8
dL&S-Social Sciences Div	gHaas School of Business	23
dL&S-Social Sciences Div	gL&S-Administered Programs	24
dL&S-Social Sciences Div	gL&S-Arts & Humanities Div	37
dL&S-Social Sciences Div	gL&S-Bio Sciences Div	26
dL&S-Social Sciences Div	gL&S-Math & Phys Sci Div	25
dL&S-Social Sciences Div	gL&S-Social Sciences Div	1271
dL&S-Social Sciences Div	gL&S-Undergraduate Div	52
dL&S-Social Sciences Div	gNA	74
dL&S-Undergraduate Div	gClg of Engineering	1
dL&S-Undergraduate Div	gClg of Natural Resources	6
dL&S-Undergraduate Div	gHaas School of Business	6
dL&S-Undergraduate Div	gL&S-Administered Programs	8
dL&S-Undergraduate Div	gL&S-Arts & Humanities Div	16
dL&S-Undergraduate Div	gL&S-Bio Sciences Div	3
dL&S-Undergraduate Div	gL&S-Social Sciences Div	32
dL&S-Undergraduate Div	gL&S-Undergraduate Div	602
dL&S-Undergraduate Div	gNA	50
dNA	gL&S-Administered Programs	1
dNA	gL&S-Undergraduate Div	1
dNA	gNA	167
dOther EVCP Programs	gClg of Engineering	1
dOther EVCP Programs	gClg of Env Design	1
dOther EVCP Programs	gClg of Natural Resources	13
dOther EVCP Programs	gHaas School of Business	22
dOther EVCP Programs	gL&S-Administered Programs	36
dOther EVCP Programs	gL&S-Arts & Humanities Div	64
dOther EVCP Programs	gL&S-Bio Sciences Div	52
dOther EVCP Programs	gL&S-Math & Phys Sci Div	54
dOther EVCP Programs	gL&S-Social Sciences Div	105
dOther EVCP Programs	gL&S-Undergraduate Div	39
dOther EVCP Programs	gNA	5
	<!DOCTYPE html>
	<meta charset="utf-8">
	<title>sankey Experiment</title>
	<style>


	.node rect {
	cursor: move;
	fill-opacity: .9;
	shape-rendering: crispEdges;
	}

	.node text {
	pointer-events: none;
	text-shadow: 0 1px 0 #fff;
	}

	.link {
	fill: none;
	stroke: #000;
	stroke-opacity: .2;
	}

	.link:hover {
	stroke-opacity: .5;
	}

	</style>
	<body>

	<p id="chart">

	<script src="http://d3js.org/d3.v3.js"></script>
	<script src="sankey.js"></script>
	<script>

	var units = "Students";

	var margin = {top: 50, right: 10, bottom: 10, left: 10},
	width = 1400 - margin.left - margin.right,
	height = 740 - margin.top - margin.bottom;

	var formatNumber = d3.format(",.0f"), // zero decimal places
	format = function(d) { return formatNumber(d) + " " + units; },
	color = d3.scale.category20();

	// append the svg canvas to the page
	var svg = d3.select("#chart").append("svg")
	.attr("width", width + margin.left + margin.right)
	.attr("height", height + margin.top + margin.bottom)
	.append("g")
	.attr("transform",
	"translate(" + margin.left + "," + margin.top + ")");

	// Set the sankey diagram properties
	var sankey = d3.sankey()
	.nodeWidth(36)
	.nodePadding(10)
	.size([width, height]);

	var path = sankey.link();

	// load the data with d3.csv instead of d3.json
	//for another much simpler example uncomment the below
	// d3.csv("d3noob_example.csv", function(error, data) {
	d3.csv("idg.csv", function(error, data) {
	//set up graph in same style as original example but empty
	graph = {"nodes" : [], "links" : []};

	data.forEach(function (d) {
	graph.nodes.push({ "name": d.source });
	graph.nodes.push({ "name": d.target });

	graph.links.push({ "source": d.source, "target": d.target, "value": +d.value });
	});

	//thanks Mike Bostock https://groups.google.com/d/msg/d3-js/pl297cFtIQk/Eso4q_eBu1IJ
	//this handy little function returns only the distinct / unique nodes
	graph.nodes = d3.keys(d3.nest()
	.key(function (d) { return d.name; })
	.map(graph.nodes));

	//it appears d3 with force layout wants a numeric source and target
	//so loop through each link replacing the text with its index from node
	graph.links.forEach(function (d, i) {
	graph.links[i].source = graph.nodes.indexOf(graph.links[i].source);
	graph.links[i].target = graph.nodes.indexOf(graph.links[i].target);
	});

	//now loop through each nodes to make nodes an array of objects rather than an array of strings
	graph.nodes.forEach(function (d, i) {
	graph.nodes[i] = { "name": d };
	});

	sankey
	.nodes(graph.nodes)
	.links(graph.links)
	.layout(32);

	// add in the links
	var link = svg.append("g").selectAll(".link")
	.data(graph.links)
	.enter().append("path")
	.attr("class", "link")
	.attr("d", path)
	.style("stroke-width", function(d) { return Math.max(1, d.dy); })
	.sort(function(a, b) { return b.dy - a.dy; });

	// add the link titles
	link.append("title")
	.text(function(d) {
	return d.source.name + " → " +
	d.target.name + "\n" + format(d.value); });

	// add in the nodes
	var node = svg.append("g").selectAll(".node")
	.data(graph.nodes)
	.enter().append("g")
	.attr("class", "node")
	.attr("transform", function(d) {
	return "translate(" + d.x + "," + d.y + ")"; })
	.call(d3.behavior.drag()
	.origin(function(d) { return d; })
	.on("dragstart", function() {
	this.parentNode.appendChild(this); })
	.on("drag", dragmove));

	// add the rectangles for the nodes
	node.append("rect")
	.attr("height", function(d) { return d.dy; })
	.attr("width", sankey.nodeWidth())
	.style("fill", function(d) {
	return d.color = color(d.name.replace(/ .*/, "")); })
	.style("stroke", function(d) {
	return d3.rgb(d.color).darker(2); })
	.append("title")
	.text(function(d) {
	return d.name + "\n" + format(d.value); });

	// add in the title for the nodes
	node.append("text")
	.attr("x", -6)
	.attr("y", function(d) { return d.dy / 2; })
	.attr("dy", ".35em")
	.attr("text-anchor", "end")
	.attr("transform", null)
	.text(function(d) { return d.name; })
	.filter(function(d) { return d.x < width / 2; })
	.attr("x", 6 + sankey.nodeWidth())
	.attr("text-anchor", "start");

	// the function for moving the nodes
	function dragmove(d) {
	d3.select(this).attr("transform",
	"translate(" + (
	d.x = Math.max(0, Math.min(width - d.dx, d3.event.x))
	) + "," + (
	d.y = Math.max(0, Math.min(height - d.dy, d3.event.y))
	) + ")");
	sankey.relayout();
	link.attr("d", path);
	}
	});

	</script>

	</body>
	</html>
	//from Mike Bostock

	d3.sankey = function() {
	var sankey = {},
	nodeWidth = 24,
	nodePadding = 8,
	size = [1, 1],
	nodes = [],
	links = [];

	sankey.nodeWidth = function(_) {
	if (!arguments.length) return nodeWidth;
	nodeWidth = +_;
	return sankey;
	};

	sankey.nodePadding = function(_) {
	if (!arguments.length) return nodePadding;
	nodePadding = +_;
	return sankey;
	};

	sankey.nodes = function(_) {
	if (!arguments.length) return nodes;
	nodes = _;
	return sankey;
	};

	sankey.links = function(_) {
	if (!arguments.length) return links;
	links = _;
	return sankey;
	};

	sankey.size = function(_) {
	if (!arguments.length) return size;
	size = _;
	return sankey;
	};

	sankey.layout = function(iterations) {
	computeNodeLinks();
	computeNodeValues();
	computeNodeBreadths();
	computeNodeDepths(iterations);
	computeLinkDepths();
	return sankey;
	};

	sankey.relayout = function() {
	computeLinkDepths();
	return sankey;
	};

	sankey.link = function() {
	var curvature = .5;

	function link(d) {
	var x0 = d.source.x + d.source.dx,
	x1 = d.target.x,
	xi = d3.interpolateNumber(x0, x1),
	x2 = xi(curvature),
	x3 = xi(1 - curvature),
	y0 = d.source.y + d.sy + d.dy / 2,
	y1 = d.target.y + d.ty + d.dy / 2;
	return "M" + x0 + "," + y0
	+ "C" + x2 + "," + y0
	+ " " + x3 + "," + y1
	+ " " + x1 + "," + y1;
	}

	link.curvature = function(_) {
	if (!arguments.length) return curvature;
	curvature = +_;
	return link;
	};

	return link;
	};

	// Populate the sourceLinks and targetLinks for each node.
	// Also, if the source and target are not objects, assume they are indices.
	function computeNodeLinks() {
	nodes.forEach(function(node) {
	node.sourceLinks = [];
	node.targetLinks = [];
	});
	links.forEach(function(link) {
	var source = link.source,
	target = link.target;
	if (typeof source === "number") source = link.source = nodes[link.source];
	if (typeof target === "number") target = link.target = nodes[link.target];
	source.sourceLinks.push(link);
	target.targetLinks.push(link);
	});
	}

	// Compute the value (size) of each node by summing the associated links.
	function computeNodeValues() {
	nodes.forEach(function(node) {
	node.value = Math.max(
	d3.sum(node.sourceLinks, value),
	d3.sum(node.targetLinks, value)
	);
	});
	}

	// Iteratively assign the breadth (x-position) for each node.
	// Nodes are assigned the maximum breadth of incoming neighbors plus one;
	// nodes with no incoming links are assigned breadth zero, while
	// nodes with no outgoing links are assigned the maximum breadth.
	function computeNodeBreadths() {
	var remainingNodes = nodes,
	nextNodes,
	x = 0;

	while (remainingNodes.length) {
	nextNodes = [];
	remainingNodes.forEach(function(node) {
	node.x = x;
	node.dx = nodeWidth;
	node.sourceLinks.forEach(function(link) {
	nextNodes.push(link.target);
	});
	});
	remainingNodes = nextNodes;
	++x;
	}

	//
	moveSinksRight(x);
	scaleNodeBreadths((size[0] - nodeWidth) / (x - 1));
	}

	function moveSourcesRight() {
	nodes.forEach(function(node) {
	if (!node.targetLinks.length) {
	node.x = d3.min(node.sourceLinks, function(d) { return d.target.x; }) - 1;
	}
	});
	}

	function moveSinksRight(x) {
	nodes.forEach(function(node) {
	if (!node.sourceLinks.length) {
	node.x = x - 1;
	}
	});
	}

	function scaleNodeBreadths(kx) {
	nodes.forEach(function(node) {
	node.x *= kx;
	});
	}

	function computeNodeDepths(iterations) {
	var nodesByBreadth = d3.nest()
	.key(function(d) { return d.x; })
	.sortKeys(d3.ascending)
	.entries(nodes)
	.map(function(d) { return d.values; });

	//
	initializeNodeDepth();
	resolveCollisions();
	for (var alpha = 1; iterations > 0; --iterations) {
	relaxRightToLeft(alpha *= .99);
	resolveCollisions();
	relaxLeftToRight(alpha);
	resolveCollisions();
	}

	function initializeNodeDepth() {
	var ky = d3.min(nodesByBreadth, function(nodes) {
	return (size[1] - (nodes.length - 1) * nodePadding) / d3.sum(nodes, value);
	});

	nodesByBreadth.forEach(function(nodes) {
	nodes.forEach(function(node, i) {
	node.y = i;
	node.dy = node.value * ky;
	});
	});

	links.forEach(function(link) {
	link.dy = link.value * ky;
	});
	}

	function relaxLeftToRight(alpha) {
	nodesByBreadth.forEach(function(nodes, breadth) {
	nodes.forEach(function(node) {
	if (node.targetLinks.length) {
	var y = d3.sum(node.targetLinks, weightedSource) / d3.sum(node.targetLinks, value);
	node.y += (y - center(node)) * alpha;
	}
	});
	});

	function weightedSource(link) {
	return center(link.source) * link.value;
	}
	}

	function relaxRightToLeft(alpha) {
	nodesByBreadth.slice().reverse().forEach(function(nodes) {
	nodes.forEach(function(node) {
	if (node.sourceLinks.length) {
	var y = d3.sum(node.sourceLinks, weightedTarget) / d3.sum(node.sourceLinks, value);
	node.y += (y - center(node)) * alpha;
	}
	});
	});

	function weightedTarget(link) {
	return center(link.target) * link.value;
	}
	}

	function resolveCollisions() {
	nodesByBreadth.forEach(function(nodes) {
	var node,
	dy,
	y0 = 0,
	n = nodes.length,
	i;

	// Push any overlapping nodes down.
	nodes.sort(ascendingDepth);
	for (i = 0; i < n; ++i) {
	node = nodes[i];
	dy = y0 - node.y;
	if (dy > 0) node.y += dy;
	y0 = node.y + node.dy + nodePadding;
	}

	// If the bottommost node goes outside the bounds, push it back up.
	dy = y0 - nodePadding - size[1];
	if (dy > 0) {
	y0 = node.y -= dy;

	// Push any overlapping nodes back up.
	for (i = n - 2; i >= 0; --i) {
	node = nodes[i];
	dy = node.y + node.dy + nodePadding - y0;
	if (dy > 0) node.y -= dy;
	y0 = node.y;
	}
	}
	});
	}

	function ascendingDepth(a, b) {
	return a.y - b.y;
	}
	}

	function computeLinkDepths() {
	nodes.forEach(function(node) {
	node.sourceLinks.sort(ascendingTargetDepth);
	node.targetLinks.sort(ascendingSourceDepth);
	});
	nodes.forEach(function(node) {
	var sy = 0, ty = 0;
	node.sourceLinks.forEach(function(link) {
	link.sy = sy;
	sy += link.dy;
	});
	node.targetLinks.forEach(function(link) {
	link.ty = ty;
	ty += link.dy;
	});
	});

	function ascendingSourceDepth(a, b) {
	return a.source.y - b.source.y;
	}

	function ascendingTargetDepth(a, b) {
	return a.target.y - b.target.y;
	}
	}

	function center(node) {
	return node.y + node.dy / 2;
	}

	function value(link) {
	return link.value;
	}

	return sankey;
	};