mattbrehmer · July 24, 2017 16:37
diff --git a/index.html b/index.html
 <!doctype html>
 <html xmnls="http://www.w3.org/1999/xhtml">
 <head>

  <meta http-equiv="content-type" content="text/html; charset=UTF-8">
  <meta http-equiv="X-Content-Type-Options" content="nosniff">
  <meta http-equiv="cache-control" content="no-cache, no-store">
  <meta http-equiv="pragma" content="no-cache">
  <meta http-equiv="expires" content="0">
  <title>Sleep duration playground</title>
  <link rel="stylesheet" href="style.css" charset="UTF-8">

 </head>

 <body> 

 </body>

 <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.7.3/d3.min.js" charset="UTF-8"></script>
 <script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.10.6/moment.min.js" charset="UTF-8"></script>
 <script type="text/javascript" src="slumberVis.js" charset="UTF-8"></script>
 <script type="text/javascript" src="main.js" charset="UTF-8"></script>

 </html>
diff --git a/License.txt b/License.txt
 ------------------------------------------ START OF LICENSE -----------------------------------------

 Timeline Storyteller

 Copyright (c) Microsoft Corporation

 All rights reserved.

 MIT License

 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the ""Software""), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

 ----------------------------------------------- END OF LICENSE ------------------------------------------
diff --git a/main.js b/main.js
 var width = 0,
    height = 0,
    svg_dim = 0,
    inner_padding,
    chart_dim,
    padding = 0,
    main_svg,
    chart_g,
    all_data,
    slumber_vis = d3.slumberVis(),
    min_date,
    max_date,
    first_date,
    selected_week,
    selected_month,
    selected_year,
    last_date;

 (function () {
  "use strict";

  d3.select("body").on("keydown", function () {    

    switch(d3.event.keyCode) {

      case 32: 
        d3.selectAll('.data_element rect').style('opacity',0.3);
      break;       

      case 67: // 'C' toggle relative/absolute
        if (slumber_vis.comparison() == "relative") {
          slumber_vis.comparison("absolute");
          console.log("absolute mode");
          d3.select('#comparison_indicator').html("<p><strong>Comparison</strong>: absolute ('c' key)</p>");
        }
        else if (slumber_vis.comparison() == "absolute") {
          slumber_vis.comparison("relative");
          console.log("relative mode");
          d3.select('#comparison_indicator').html("<p><strong>Comparison</strong>: relative ('c' key)</p>");
        }
        redraw();
      break;

      case 82: // 'R' toggle representation
        if (slumber_vis.representation() == "radial") {
          slumber_vis.representation("linear");
          console.log("linear representation");
          d3.select('#representation_indicator').html("<p><strong>Representation</strong>: linear ('r' key)</p>");
        }
        else if (slumber_vis.representation() == "linear") {
          slumber_vis.representation("radial");
          console.log("radial representation");
          d3.select('#representation_indicator').html("<p><strong>Representation</strong>: radial ('r' key)</p>");
        }
        redraw();
      break;

      case 37: // move backward in time
        slumber_vis.exit_direction("right");
        console.log("move backward in time");

        if (slumber_vis.granularity() == "week"){
          first_date = moment(first_date).startOf('week').subtract(1,'weeks');
        }
        else if (slumber_vis.granularity() == "month"){
          first_date = moment(first_date).startOf('month').subtract(1,'months');
        }
        else if (slumber_vis.granularity() == "year"){
          first_date = moment(first_date).startOf('year').subtract(1,'years');
        }        
        
        redraw();
      break;

      case 39: // move forward in time
        slumber_vis.exit_direction("left");
        console.log("move forward in time");

        if (slumber_vis.granularity() == "week"){
          first_date = moment(first_date).startOf('week').add(1,'weeks');
        }
        else if (slumber_vis.granularity() == "month"){
          first_date = moment(first_date).startOf('month').add(1,'months');
        }
        else if (slumber_vis.granularity() == "year"){
          first_date = moment(first_date).startOf('year').add(1,'years');
        }

        redraw();
      break;

      case 38: // toggle larger granularity of time
        slumber_vis.exit_direction("left")
        console.log("larger granularity");

        if (slumber_vis.granularity() == "week"){
          slumber_vis.granularity("month")
          first_date = moment(first_date).startOf('month');
        }
        else if (slumber_vis.granularity() == "month"){
          slumber_vis.granularity("year")
          first_date = moment(first_date).startOf('year');
        }
         else {
          first_date = moment(first_date);
        }  

        d3.selectAll('.element_date tspan').text("");
        redraw();
      break;

      case 40: // toggle smaller granularity of time
        slumber_vis.exit_direction("right")
        console.log("smaller granularity");

        if (slumber_vis.granularity() == "month"){
          slumber_vis.granularity("week");
          first_date = moment(first_date).startOf('month').startOf("week");
        }
        else if (slumber_vis.granularity() == "year"){
          slumber_vis.granularity("month");
          first_date = moment(first_date).startOf('month');
        }
        else {
          first_date = moment(first_date);
        }

        d3.selectAll('.element_date tspan').text("");
        redraw();
      break;

      default:
      break;
    }    

  });

  d3.select("body").on("keyup", function () {    

    switch(d3.event.keyCode) {

      case 32: 
        d3.selectAll('.data_element rect').style('opacity',0);
      break; 

      default:
      break;

    };
  });

  slumber_vis.granularity("week");

  d3.select('body').append('div')
  .attr('id','main_div');

  main_svg = d3.select('#main_div').append('svg')
  .attr('id','main_svg');

  chart_g = main_svg.append('g')
  .attr('id','chart_g');

  d3.select('#main_div').append('div')
  .attr('class','indicator')
  .attr('id','comparison_indicator')
  .html("<p><strong>Comparison</strong>: relative ('c' key)</p>");

  d3.select('#main_div').append('div')
  .attr('class','indicator')
  .attr('id','representation_indicator')
  .html("<p><strong>Representation</strong>: linear ('r' key)</p>");

  d3.select('#main_div').append('div')
  .attr('class','indicator')
  .attr('id','date_indicator')
  .html("<p></p>");

  d3.select('#main_div').append('div')
  .attr('class','indicator')
  .attr('id','spacebar_indicator')
  .html("<p>(space key to show individual days)</p>");

  d3.csv("sleep.csv", function(error,data) {

    data.sort(function(x,y) {
      return d3.ascending(new Date(x.date_val).valueOf(),new Date(y.date_val).valueOf())
    })

    first_date = moment(data[0].date_val);
    min_date = first_date;
    max_date = moment(data[data.length - 1].date_val);
    selected_week = moment(first_date).week();
    selected_month = moment(first_date).month();
    selected_year = moment(first_date).year();

    all_data = data;

    last_date = d3.max(all_data, function(d){
      return new Date(d.date_val);
    })

    checkMissingDay(0);

  })

  padding = {top: 10, right: 10, bottom: 10, left: 10};

  function checkMissingDay(index) {
    if ((index + 1) < all_data.length){

      if (moment(all_data[index].date_val).add(1,'d').toDate() < last_date && moment(all_data[index].date_val).add(1,'d').toDate().valueOf() != moment(all_data[index + 1].date_val).toDate().valueOf()){
        
        console.log("missing day: " + moment(all_data[index].date_val).add(1,'d').toDate());
        
        var missingDay = {
          "date_val": moment(all_data[index].date_val).add(1,'d').toDate(),
          "time_in_bed":"00",
          "time_asleep":"00",
          "time_awake":"00",
          "adjusted_time_in_bed":"12",
          "adjusted_time_asleep":"12",
          "adjusted_time_awake":"12"
        }
        
        all_data.splice(index+1,0,missingDay); 
      }


      checkMissingDay(index + 1);
      
    }
  };

  function getScrollbarWidth() {
    var outer = document.createElement("div");
    outer.style.visibility = "hidden";
    outer.style.width = "100px";
    document.body.appendChild(outer);

    var widthNoScroll = outer.offsetWidth;
    // force scrollbars
    outer.style.overflow = "scroll";

    // add innerdiv
    var inner = document.createElement("div");
    inner.style.width = "100%";
    outer.appendChild(inner);

    var widthWithScroll = inner.offsetWidth;

    // remove divs
    outer.parentNode.removeChild(outer);

    return widthNoScroll - widthWithScroll;
  }

  function redraw() {
    if (window.innerHeight < window.innerWidth) {
      width = window.innerWidth - getScrollbarWidth() - padding.left - padding.right - 2;
      height = width * 320 / 568 - getScrollbarWidth() - padding.top - padding.bottom - 2; //iphone 5 dimensions
      svg_dim = height - 2;
    }
    else {
      height = window.innerHeight - getScrollbarWidth() - padding.top - padding.bottom - 2;
      width = height * 320 / 568 - getScrollbarWidth() - padding.left - padding.right - 2; //iphone 5 dimensions
      svg_dim = width - 2;
    }

    inner_padding = svg_dim * 0.1;

    chart_dim = svg_dim * 0.8;

    d3.select('body')
    .style('width',window.innerWidth + 'px')
    .style('height',window.innerHeight + 'px');

    d3.select('#main_div')
    .style('height',height + 'px')
    .style('width',width + 'px')
    .style('transform',"translate( " + 0 + "," + ((window.innerHeight - getScrollbarWidth() - padding.top - padding.bottom - 2) / 2 - height / 2) + "px)")

    d3.select('#main_svg')
    .style('height',svg_dim + 'px')
    .style('width',svg_dim + 'px');
    
    chart_g.attr('transform','translate(' + inner_padding + ',' + inner_padding + ')')

    selected_week = first_date.week();
    selected_month = first_date.month();
    selected_year = first_date.year();

    if (new Date(first_date) < new Date(min_date)) {
      first_date = min_date;
    }   
    else if (new Date(first_date) > new Date(max_date)) {
      first_date = max_date;
    } 

    console.log("first date: " + first_date.toDate());

    d3.select('#date_indicator').html("<p><strong>Range</strong>: " + slumber_vis.granularity() + " beginning " + first_date.format("ddd MMM Do YYYY") + " (arrow keys)</p>")

    chart_g.call(slumber_vis);
    chart_g.call(slumber_vis);
  };

  var checkExist = setInterval(function() {
    if (all_data != undefined) {
      chart_g.datum(all_data);
      redraw();
      clearInterval(checkExist);
    }
  }, 100); // check every 100ms

  window.onresize = function(e) {
    console.log("redraw!")
    redraw();
  }

 })();
diff --git a/sleep.csv b/sleep.csv
diff --git a/slumberVis.js b/slumberVis.js
 (function () {

  "use strict";

  d3.slumberVis = function () {

    /**

    GLOBAL VARIABLES

    **/

    var chron_scale = d3.scaleLinear(),
        quant_scale = d3.scaleLinear(),
        transition_time = 750,
        comparison = "relative",
        representation = "linear",
        granularity,
        exit_direction = "left",
        update_path,
        enter_path;

    function slumberVis (selection) {
      selection.each(function (data){


        var filtered_data = data.filter(function(d) {
          if (granularity == "week"){
            return moment(d.date_val).week() == selected_week && (moment(d.date_val).year() == selected_year || (selected_week == 1 && moment(d.date_val).year() == (selected_year + 1)));
          }
          else if (granularity == "month"){
            return moment(d.date_val).month() == selected_month && moment(d.date_val).year() == selected_year;
          }
          else if (granularity == "year"){
            return moment(d.date_val).year() == selected_year;
          }

        });

        var min_time_asleep = d3.min(filtered_data, function(d){
          return +d.adjusted_time_asleep;
        });

        var max_time_awake = d3.max(filtered_data, function(d){
          return +d.adjusted_time_awake;
        });

        var max_duration = d3.max(filtered_data, function(d){
          return +d.adjusted_time_awake - d.adjusted_time_asleep;
        });

        var path_data = filtered_data.concat(filtered_data[filtered_data.length-1]);

        /**

        SCALES

        **/
        

       //update chronological time scale, map to time range

        //update chron_scale range
        if (granularity == "week"){
          chron_scale.range([0,chart_dim - chart_dim / 7]);
        }
        else if (granularity == "month"){
          chron_scale.range([0,chart_dim - chart_dim / 31]);
        }
        else if (granularity == "year"){
          chron_scale.range([0,chart_dim - chart_dim / 366]);
        }

        // update chron_scale domain
        if (granularity == "week"){
          chron_scale.domain([0,6]);
        }
        else if (granularity == "month"){
          chron_scale.domain([1,31]);
        }
        else if (granularity == "year"){
          chron_scale.domain([1,366]);
        }

        //update quantiatative scale, map to sleep duration range

        //update quant_scale range
        if (representation == "linear") {
          quant_scale.range([0,chart_dim]);
        }
        //update quant_scale range
        else {
          quant_scale.range([0,chart_dim * 0.6]);
        }

        // update chron_scale domain
        quant_scale.domain([0,16]);

        /**

        CHART CONTAINER

        **/

        /**

        VISIBLE RANGE

        **/

        var target_range = d3.select(this).selectAll(".target_range")
        .data([null]);

        var target_range_enter = target_range.enter()
        .append("g")
        .attr("class","target_range");            
        
        target_range_enter.append("rect")
        .attr("class","target_range");

        target_range_enter.append("circle")
        .attr("cx",chart_dim / 2)
        .attr("cy",chart_dim / 2)
        .attr("r",0)
        .attr("class","target_range");

        target_range_enter.append("text")
        .attr("id","target_range_start")
        .attr("x",-inner_padding)
        .attr("dx","0.25em")
        .attr("dy", "1em")
        .text("");

        target_range_enter.append("text")
        .attr("id","target_range_end")
        .attr("x",-inner_padding)
        .attr("dx","0.25em")        
        .attr("dy", "1em")
        .text("8 h");

        target_range_enter.append("rect")
        .attr("class","midnight")
        .attr("x",-inner_padding)
        .attr("width",svg_dim)
        .attr("height", "1px");

        target_range_enter.append("circle")
        .attr("class","midnight")
        .attr("cx",chart_dim / 2)
        .attr("cy",chart_dim / 2)
        .attr("r",0);

        target_range_enter.append("text")
        .attr("class","midnight")
        .attr("x",-inner_padding)
        .attr("dx","0.25em")
        .attr("dy", "1em")
        .text("0 h");

        var target_range_update = target_range.transition()
        .duration(transition_time)
        .ease(d3.easeCubicInOut);

        target_range_update.selectAll('rect.midnight')
        .attr("width", function(){
          if (representation == "linear") {
            return svg_dim;
          }
          else {
            return 0;
          }
        })
        .attr("y",function() {
          if (comparison == "relative"){
            return 0;
          }
          else { // comparison == "absolute"
            return quant_scale( 6 );
          }
        });

        target_range_update.selectAll('circle.midnight')
        .attr("r", function(){
          if (representation == "radial" && comparison == "absolute") {
            return quant_scale( 6 );
          }
          else {
            return 0;
          }
        })

        target_range_update.selectAll('text.midnight')
        .attr("transform", function(){
          var x_pos,
              y_pos;

          if (representation == "linear") {
            x_pos = 0;
            if (comparison == "relative"){
              y_pos = 0;
            }
            else { // comparison == "absolute"
              y_pos = quant_scale( 6 );
            }
          }
          else { // representation == "radial"
            y_pos = chart_dim / 2;
            if (comparison == "relative"){
              x_pos = chart_dim / 2 + quant_scale( 2 );
            }
            else { // comparison == "absolute"
              x_pos = chart_dim / 2 - quant_scale( 4 );
            }
          }

          return "translate(" + x_pos +"," + y_pos + ")";
        })  
        .text(function() {          
          if (comparison == "relative"){
            return "0 h";
          }
          else { // comparison == "absolute"
            return "00:00";
          }
        });

        target_range_update.select('#target_range_start')
        .attr("transform", function(){
          var x_pos,
              y_pos;

          if (representation == "linear") {
            x_pos = 0;
            if (comparison == "relative"){
              y_pos = 0;
            }
            else { // comparison == "absolute"
              y_pos = quant_scale( 4 );
            }
          }
          else { // representation == "radial"
            y_pos = chart_dim / 2;
            if (comparison == "relative"){
              x_pos = chart_dim / 2;
            }
            else { // comparison == "absolute"
              x_pos = chart_dim / 2 - quant_scale( 2 );
            }
          }

          return "translate(" + x_pos +"," + y_pos + ")";
        })        
        .text(function() {          
          if (comparison == "relative" || representation == "radial"){
            return "";
          }
          else { // comparison == "absolute"
            return "22:00";
          }
        });

        target_range_update.select('#target_range_end')
        .attr("transform", function(){
          var x_pos,
              y_pos;

          if (representation == "linear") {
            x_pos = 0;
            if (comparison == "relative"){
              y_pos = quant_scale( 8 );
            }
            else { // comparison == "absolute"
              y_pos = quant_scale( 12 );
            }
          }
          else { // representation == "radial"
            y_pos = chart_dim / 2;
            if (comparison == "relative"){
              x_pos = chart_dim / 2 - quant_scale( 6 );
            }
            else { // comparison == "absolute"
              x_pos = chart_dim / 2 - quant_scale( 10 );
            }
          }

          return "translate(" + x_pos +"," + y_pos + ")";
        })         
        .text(function() {          
          if (comparison == "relative"){
            return "8 h";
          }
          else { // comparison == "absolute"
            return "06:00";
          }
        });        

        target_range_update.selectAll('rect.target_range')
        .attr('x', function(){
          var rect_x;
          if (representation == "linear") {
            rect_x = -inner_padding;
          }
          else { //representation == "radial"
            if (comparison == "relative") {
              rect_x = (chart_dim / 2) - quant_scale( 8 );
            }
            else { // comparison == "absolute"
              rect_x = (chart_dim / 2) - quant_scale( 12 );
            }            
          }
          return rect_x;
        })
        .attr('y', function(){
          var rect_y;
          if (representation == "linear") {
            if (comparison == "relative") {
              rect_y = 0;
            }
            else { // comparison == "absolute"
              rect_y = quant_scale( 4 );
            }
          }
          else { //representation == "radial"
            if (comparison == "relative") {
              rect_y = (chart_dim / 2) - quant_scale( 8 );
            }
            else { // comparison == "absolute"
              rect_y = (chart_dim / 2) - quant_scale( 12 );
            }            
          }
          return rect_y;
        })
        .attr('rx', function(){
          var rect_rx;
          if (representation == "linear") {
           rect_rx = 0;
          }
          else { //representation == "radial"
            if (comparison == "relative") {
              rect_rx = quant_scale( 8 );
            }
            else { // comparison == "absolute"
              rect_rx = quant_scale( 12 );
            }            
          }
          return rect_rx;
        })
        .attr('ry', function(){
          var rect_ry;
          if (representation == "linear") {
            rect_ry = 0;
          }
          else { //representation == "radial"
            if (comparison == "relative") {
              rect_ry = quant_scale( 8 );
            }
            else { // comparison == "absolute"
              rect_ry = quant_scale( 12 );
            }            
          }
          return rect_ry;          
        })
        .attr('width', function(){
          var rect_width;
          if (representation == "linear") {
           rect_width = svg_dim;
          }
          else { //representation == "radial"
            if (comparison == "relative") {
              rect_width = quant_scale( 16 );
            }
            else { // comparison == "absolute"
              rect_width = quant_scale( 24 );
            }            
          }
          return rect_width;
        })
        .attr('height', function(){
          var rect_height;
          if (representation == "linear") {
            rect_height = quant_scale( 8 );
          }
          else { //representation == "radial"
            if (comparison == "relative") {
              rect_height = quant_scale( 16 );
            }
            else { // comparison == "absolute"
              rect_height = quant_scale( 24 );
            }            
          }
          return rect_height;
        });        

        target_range_update.selectAll('circle.target_range')
        .attr("r", function(){
          if (representation == "radial" && comparison == "absolute") {
            return quant_scale( 4 );
          }
          else {
            return 0;
          }
        })

        /**

        DATA POINT ENTER

        **/

        var data_elements = d3.select(this).selectAll(".data_element")
        .data(filtered_data, function(d) {
          return d.date_val;
        });

        var data_element_enter = data_elements.enter()
        .append("g")
        .attr("class","data_element")
        .attr("id", function (d) {
          return "data_element_" + d.date_val;
        })        
        .attr("transform", function() {
          if (exit_direction == "right") {
            return "translate(" + (-2 * inner_padding) + ",0)";
          }
          else {
            return "translate(" + svg_dim + ",0)";
          }
        });     

        data_element_enter.append("line")
        .attr("x0", 0)
        .attr("x1",0)
        .attr("y0",0)
        .attr("y1",chart_dim)
        .style("opacity", 0.1);

        data_element_enter.append("rect")
        .attr("height", 0)  
        .style("fill", function(d){
          if (moment(d.date_val).weekday() == 5 || moment(d.date_val).weekday() == 6) {
            return "#00ad9c";
          }
          else {
            return "#009688";
          }
        })
        .style("stroke", function(d){
          if (moment(d.date_val).weekday() == 5 || moment(d.date_val).weekday() == 6) {
            return "#00ad9c";
          }
          else {
            return "#009688";
          }
        })      
        .attr("y", function(d){
          if (comparison == "relative"){
            return 0;
          }
          else { // comparison == "absolute"
            return quant_scale( d.adjusted_time_asleep - 6 );
          }
        })       
        .attr("width", function(d) {
          if (granularity == "week"){
            return chart_dim  / 7;
          }
          else if (granularity == "month"){
            return chart_dim  / 31;
          }
          else if (granularity == "year"){
            return chart_dim  / 366;
          }          
        });            

        data_element_enter.append("text")
        .attr("class","element_start")
        .attr('text-anchor', "middle")
        .attr("dy","-1em")
        .attr("y", function(d){
          if (comparison == "relative"){
            return 0;
          }
          else { // comparison == "absolute"
            return quant_scale( d.adjusted_time_asleep - 6 );
          }
        });

        data_element_enter.append("text")
        .attr("class","element_end")
        .attr('text-anchor', "middle")
        .attr("y", function(d){
          if (comparison == "relative"){
            return 0;
          }
          else { // comparison == "absolute"
            return quant_scale( d.adjusted_time_asleep - 6 );
          }
        })
        .attr("dy","1.5em");

        var element_date_top = data_element_enter.append("text")
        .attr("class","element_date");
        
        element_date_top.append("tspan")
        .attr("class","element_weekday_top")
        .attr("dy","-2em")
        .style('fill', function(d){
          if (granularity == "year") {
            return "#999";
          }
          else if (moment(d.date_val).weekday() == 5 || moment(d.date_val).weekday() == 6) {
            return "#f99";
          }
        })
        .text(function(d){
          if (representation == "radial"){
            return "";
          }
          else {
            if (granularity == "week"){
              return moment(d.date_val).format('ddd');
            }
            else if (granularity == "month" && moment(d.date_val).weekday() == 0){
              return moment(d.date_val).format('ddd');
            }
            else if (granularity == "year" && moment(d.date_val).date() == 1){
              return moment(d.date_val).format('MMM');
            }
            else {
              return "";
            }                      
          }
        });

        element_date_top.append("tspan")
        .attr("class","element_date_top")
        .attr("dy","1.5em")        
        .text(function(d){
          if (representation == "radial"){
            return "";
          }
          else {
            if (granularity == "week"){
              return moment(d.date_val).format('MM/DD');
            }     
            else if (granularity == "month" && moment(d.date_val).weekday() == 0){
              return moment(d.date_val).format('MM/DD');
            }              
            else {
              return "";
            }                     
          }
        });

        var element_date_bottom = data_element_enter.append("text")
        .attr("class","element_date")
        .attr("y", chart_dim);
        
        element_date_bottom.append("tspan")
        .attr("class","element_weekday_bottom")
        .attr("dy","1em")
        .style('fill', function(d){
          if (moment(d.date_val).weekday() == 5 || moment(d.date_val).weekday() == 6) {
            return "#f99";
          }
        })
        .text(function(d){     
          if (representation == "radial"){
            return "";
          }
          else {
            if (granularity == "week"){
            return moment(d.date_val).add(1,'d').format('ddd');
            }
            else if (granularity == "month" && moment(d.date_val).weekday() == 0){
              return moment(d.date_val).add(1,'d').format('ddd');
            }
            else if (granularity == "year" && moment(d.date_val).date() == 1){
            return moment(d.date_val).format('MMM');
            }
            else {
              return "";
            }             
          }     
        });

        element_date_bottom.append("tspan")
        .attr("class","element_date_bottom")
        .attr("dy","1.5em")
        .text(function(d){
          if (representation == "radial"){
            return "";
          }
          else {
            if (granularity == "week"){
              return moment(d.date_val).add(1,'d').format('MM/DD');
            }  
            else if (granularity == "month" && moment(d.date_val).weekday() == 0){
              return moment(d.date_val).add(1,'d').format('MM/DD');
            }                 
            else {
              return "";
            }           
          }
        });

        data_element_enter.selectAll('text tspan')    
        .attr('text-anchor', "middle")
        .attr('x', 0)                    
        .attr("dx", function(d) {
          if (granularity == "week"){
            return (chart_dim  / 7) / 2 + "px";
          }
          else if (granularity == "month"){
             return (chart_dim  / 31) / 2 + "px";
          }
          else if (granularity == "year"){
             return (chart_dim  / 366) / 2 + "px";
          }          
        });

        /**

        DATA POINT UPDATE (STAGE 1)

        **/

        var data_element_update = data_elements
        .transition()
        .delay(function(d,i){
          if (exit_direction == "right") {
            return (filtered_data.length - i) * transition_time * 0.5 / filtered_data.length;
          }
          else {
            return i * transition_time * 0.5 / filtered_data.length;
          }
        })
        .duration(transition_time)
        .ease(d3.easeCubicIn);        

        data_element_update.attr("transform",function(d,i){
          if (representation == "linear") {
            var chron_pos = 0;
            if (granularity == "week"){
              chron_pos = chron_scale( moment(d.date_val).weekday() );
            }
            else if (granularity == "month"){
              chron_pos = chron_scale( moment(d.date_val).date() );
            }
            else if (granularity == "year"){
              chron_pos = chron_scale( moment(d.date_val).dayOfYear() );
            }
            return "translate(" + chron_pos + ",0)";
          }
          else { //representation == "radial"
            var rotation = -180;
            if (granularity == "week"){
              rotation += moment(d.date_val).weekday() / 7 * 360;
            }
            else if (granularity == "month"){
              rotation += (moment(d.date_val).date() - 1) / 31 * 360;
            }
            else if (granularity == "year"){
              rotation += (moment(d.date_val).dayOfYear() - 1) / 366 * 360;
            }
            return "translate(" + (chart_dim / 2) + "," + (chart_dim / 2) + ")rotate(" + rotation + ")";
          }          
        });

        data_element_update.select('rect')   
        .attr("width", function(d) {
          if (granularity == "week"){
            return chart_dim  / 7;
          }
          else if (granularity == "month"){
            return chart_dim  / 31;
          }
          else if (granularity == "year"){
            return chart_dim  / 366;
          }          
        })
        .attr("x", function(d) {
          if (representation == "radial") {
            if (granularity == "week"){
              return -0.5 * chart_dim  / 7;
            }
            else if (granularity == "month"){
              return -0.5 * chart_dim  / 31;
            }
            else if (granularity == "year"){
              return -0.5 * chart_dim  / 366;
            } 
          }
          else {
            return 0;
          }                   
        });        

        data_element_update.select("line")
        .style("opacity", function(d){
          if (granularity == "week"){
            return 0.6;
          }
          else if (granularity == "month" && (moment(d.date_val).weekday() == 0 || moment(d.date_val).date() == 1)){
            return 0.6;
          }
          else if (granularity == "year" && moment(d.date_val).date() == 1){
            return 0.6;
          } 
          else {
            return 0.1;
          }
        })
        .style("stroke", function(d){
          if (granularity == "week"){
            return "#009688";
          }
          else if (granularity == "month" && moment(d.date_val).weekday() == 0){
            return "#009688";
          }
          else if (granularity == "month" && moment(d.date_val).date() == 1){
            return "#ff0000";
          }
          else if (granularity == "year" && moment(d.date_val).date() == 1){
            return "#009688";
          } 
          else {
            return "#999";
          }
        });

        data_element_update.selectAll('text')   
        .attr('text-anchor', "middle")
        .attr('x', 0)  
        .attr("dx", function(d) {
          if (granularity == "week"){
            return (chart_dim  / 7) / 2 + "px";
          }
          else if (granularity == "month"){
             return (chart_dim  / 31) / 2 + "px";
          }
          else if (granularity == "year"){
             return (chart_dim  / 366) / 2 + "px";
          }          
        });

        data_element_update.selectAll('.element_weekday_top')
        .attr('dy', function(d) {
          if (representation == "radial"){
            var rotation = -180;
            if (granularity == "week"){
              rotation += moment(d.date_val).weekday() / 7 * 360;
            }
            else if (granularity == "month"){
              rotation += (moment(d.date_val).date() - 1) / 31 * 360;
            }
            else if (granularity == "year"){
              rotation += (moment(d.date_val).dayOfYear() - 1) / 366 * 360;
            }
            if (rotation < -90 || rotation > 90) {
              return "2em";
            }
            else {
              return "-2em";
            }
          }
          else {
            return "-2em";
          }
        });

        data_element_update.selectAll('tspan')
        .attr('text-anchor', "middle")
        .attr('x', 0)         
        .attr("dx", function(d) {
          if (representation == "linear"){
            if (granularity == "week"){
              return (chart_dim  / 7) / 2 + "px";
            }
            else if (granularity == "month"){
              return (chart_dim  / 31) / 2 + "px";
            }
            else if (granularity == "year"){
              return (chart_dim  / 366) / 2 + "px";
            } 
          }
          else { //representation == "radial"
            var rotation = -180;
            if (granularity == "week"){
              rotation += moment(d.date_val).weekday() / 7 * 360;
            }
            else if (granularity == "month"){
              rotation += (moment(d.date_val).date() - 1) / 31 * 360;
            }
            else if (granularity == "year"){
              rotation += (moment(d.date_val).dayOfYear() - 1) / 366 * 360;
            }
            if (rotation > -90 && rotation < 90) {
              if (granularity == "week"){
                return -1 * (chart_dim  / 7) / 4 + "px";
              }
              else if (granularity == "month"){
                return -1 * (chart_dim  / 31) / 4 + "px";
              }
              else if (granularity == "year"){
                return -1 * (chart_dim  / 366) / 4 + "px";
              }
            }
            else {
              if (granularity == "week"){
                return (chart_dim  / 7) / 4 + "px";
              }
              else if (granularity == "month"){
                return (chart_dim  / 31) / 4 + "px";
              }
              else if (granularity == "year"){
                return (chart_dim  / 366) / 4 + "px";
              }
            }            
          }
        });

        data_element_update.select(".element_date")
        .attr("transform", function(d){          
          if (representation == "radial") {
            var rotation = -180;
            if (granularity == "week"){
              rotation += moment(d.date_val).weekday() / 7 * 360;
            }
            else if (granularity == "month"){
              rotation += (moment(d.date_val).date() - 1) / 31 * 360;
            }
            else if (granularity == "year"){
              rotation += (moment(d.date_val).dayOfYear() - 1) / 366 * 360;
            }
            if (rotation < -90 || rotation > 90) {
              rotation = 180;
            }
            else {
              rotation = 0;
            }
            if (comparison == "relative") {
              return ("translate(0," + (chart_dim * 0.575) + ")rotate(" + rotation + ")")
            }
            else {
              return ("translate(0," + (chart_dim * 0.625) + ")rotate(" + rotation + ")")
            }
          }
        });

        data_element_update.selectAll('.element_start')
        .text("");

         data_element_update.selectAll('.element_end')
        .text("");

        /**

        DATA POINT UPDATE (STAGE 2)

        **/

        var data_element_second_update = data_elements.transition()
        .delay(function(d,i){
          return transition_time * 1.5 + i * transition_time * 0.5 / filtered_data.length;
        })
        .duration(transition_time * 0.5)
        .ease(d3.easeCubicInOut);

        data_element_second_update.select('rect')
        .attr('height',function(d){
          return quant_scale( d.adjusted_time_awake - d.adjusted_time_asleep );
        })
        .attr("y",function(d) {
          if (comparison == "relative"){
            return 0;
          }
          else { // comparison == "absolute"
            return quant_scale( d.adjusted_time_asleep - 6 );
          }
        });

        data_element_second_update.select('.element_start')
        .attr("y",function(d) {
          if (comparison == "relative"){
            return 0;
          }
          else { // comparison == "absolute"
            return quant_scale( d.adjusted_time_asleep - 6 );
          }
        })
        .text(function(d) {
          if (representation == "radial"){
            return "";
          }
          else {
            if (comparison == "relative"){
              return "";
            }
            else { // comparison == "absolute"
              if (d.adjusted_time_asleep == min_time_asleep || granularity == "week") {    
                var element_start_time = ""
                if (Math.floor(d.time_asleep) < 10) {
                  element_start_time += "0";
                }
                element_start_time += Math.floor(d.time_asleep) + ":";
                if (Math.floor(d.time_asleep % 1 * 60) < 10) {
                  element_start_time += "0";
                }
                element_start_time += Math.floor(d.time_asleep % 1 * 60);
                return element_start_time;
              }
            }           
          }
        });

        data_element_second_update.select('.element_end')
        .attr("y",function(d) {
          if (comparison == "relative"){
            return quant_scale( d.adjusted_time_awake - d.adjusted_time_asleep );
          }
          else { // comparison == "absolute"
            return quant_scale( d.adjusted_time_awake - 6 );
          }
        })
        .text(function(d) {
          if (representation == "radial"){
            return "";
          }
          else {
            if (comparison == "relative"){
              if ((d.adjusted_time_awake - d.adjusted_time_asleep) == max_duration || granularity == "week") {
                return (d.adjusted_time_awake - d.adjusted_time_asleep).toFixed(1) + " h";
              }
              else {
                return "";
              }
              
            }
            else { // comparison == "absolute"
              if (d.adjusted_time_awake == max_time_awake || granularity == "week") {
                var element_end_time = ""
                if (Math.floor(d.time_awake) < 10) {
                  element_end_time += "0";
                }
                element_end_time += Math.floor(d.time_awake) + ":";
                if (Math.floor(d.time_awake % 1 * 60) < 10) {
                  element_end_time += "0";
                }
                element_end_time += Math.floor(d.time_awake % 1 * 60);
                return element_end_time;
              }
              else {
                return "";
              }
            }
          }
        });

        data_element_second_update.select(".element_weekday_top")
        .style('fill', function(d){
          if (granularity == "year") {
            return "#999";
          }
          else if (moment(d.date_val).weekday() == 5 || moment(d.date_val).weekday() == 6) {
            return "#f99";
          }
        })
        .text(function(d){   
          if (granularity == "week"){
            return moment(d.date_val).format('ddd');
          }
          else if (granularity == "month" && moment(d.date_val).weekday() == 0){
            return moment(d.date_val).format('ddd');
          }
          else if (granularity == "year" && moment(d.date_val).date() == 1){
            return moment(d.date_val).format('MMM');
          }
          else {
            return "";
          }                
        });

        data_element_second_update.select(".element_date_top")
        .text(function(d){          
          if (granularity == "week"){
            return moment(d.date_val).format('MM/DD');
          }     
          else if (granularity == "month" && moment(d.date_val).weekday() == 0){
            return moment(d.date_val).format('MM/DD');
          }              
          else {
            return "";
          }   
        });
        
        
        data_element_second_update.select(".element_weekday_bottom")
        .style('fill', function(d){
          if (granularity == "year") {
            return "#999";
          }
          else if (moment(d.date_val).weekday() == 5 || moment(d.date_val).weekday() == 6) {
            return "#f99";
          }
        })
        .text(function(d){     
          if (representation == "radial"){
            return "";
          }
          else {
            if (granularity == "week"){
            return moment(d.date_val).add(1,'d').format('ddd');
            }
            else if (granularity == "month" && moment(d.date_val).weekday() == 0){
              return moment(d.date_val).add(1,'d').format('ddd');
            }
            else if (granularity == "year" && moment(d.date_val).date() == 1){
            return moment(d.date_val).format('MMM');
            }
            else {
              return "";
            }           
          }     
        });

        data_element_second_update.select(".element_date_bottom")
        .text(function(d){
          if (representation == "radial"){
            return "";
          }
          else {
            if (granularity == "week"){
              return moment(d.date_val).add(1,'d').format('MM/DD');
            }  
            else if (granularity == "month" && moment(d.date_val).weekday() == 0){
              return moment(d.date_val).add(1,'d').format('MM/DD');
            }                 
            else {
              return "";
            }
          }     
        });        

        /**

        DATA POINT EXIT

        **/
       
        data_elements.exit()
        .transition()
        .duration(transition_time)
        .attr("transform", function() {
          if (exit_direction == "right") {
            return "translate(" + svg_dim + ",0)";
          }
          else {
            return "translate(" + -svg_dim + ",0)";
          }

        }) 
        .remove();

        /** 
         
        PATH ENTER 
        
        **/

        if (representation == "linear") {
          update_path = d3.area()
          .x(function(d,i){
            var chron_pos = 0;
            if (granularity == "week"){
              chron_pos = moment(d.date_val).weekday();
            }
            else if (granularity == "month"){
              chron_pos = moment(d.date_val).date();
            }
            else if (granularity == "year"){
              chron_pos = moment(d.date_val).dayOfYear();
            }
            if (i == path_data.length - 1){
              chron_pos++;
            }
            return chron_scale( chron_pos );
          })     
          .y1(function(d,i){
            if (comparison == "relative"){
              return quant_scale( d.adjusted_time_awake - d.adjusted_time_asleep );
            }
            else { // comparison == "absolute"
              return quant_scale( d.adjusted_time_asleep - 6 ) + quant_scale( d.adjusted_time_awake - d.adjusted_time_asleep );
            } 
          })
          .y0(function(d,i){
            if (comparison == "relative"){
              return 0;
            }
            else { // comparison == "absolute"
              return quant_scale( d.adjusted_time_asleep - 6 );
            }          
          })
          .curve( d3.curveStepAfter );
        }
        else {
          update_path = d3.radialArea()
          .angle(function(d,i) {
            var chron_pos;
            if (granularity == "week"){
              chron_pos = moment(d.date_val).weekday() / 7 * 2 * Math.PI;
            }
            else if (granularity == "month"){
              chron_pos = (moment(d.date_val).date() - 1) / 31 * 2 * Math.PI;
            }
            else if (granularity == "year"){
              chron_pos = (moment(d.date_val).dayOfYear() - 1) / 366 * 2 * Math.PI;
            }
            
            if (i == path_data.length - 1){
              chron_pos = 2 * Math.PI;
            }
            return chron_pos ;
          })
          .outerRadius(function(d,i) {
            if (i == path_data.length - 1){
              if (comparison == "relative"){
                return quant_scale( path_data[0].adjusted_time_awake - path_data[0].adjusted_time_asleep );
              }
              else { // comparison == "absolute"
                return quant_scale( path_data[0].adjusted_time_asleep - 6 ) + quant_scale( path_data[0].adjusted_time_awake - path_data[0].adjusted_time_asleep );
              }
            }
            else {
              if (comparison == "relative"){
                return quant_scale( d.adjusted_time_awake - d.adjusted_time_asleep );
              }
              else { // comparison == "absolute"
                return quant_scale( d.adjusted_time_asleep - 6 ) + quant_scale( d.adjusted_time_awake - d.adjusted_time_asleep );
              } 
            }                                   
          })
          .innerRadius(function(d,i){

            if (i == path_data.length - 1) {
              if (comparison == "relative"){
                return 0;
              }
              else { // comparison == "absolute"
                return quant_scale( path_data[0].adjusted_time_asleep - 6 );
              }
            } 
            else {
              if (comparison == "relative"){
                return 0;
              }
              else { // comparison == "absolute"
                return quant_scale( d.adjusted_time_asleep - 6 );
              }
            }            
          })
          .curve( d3.curveNatural )
        }


        var data_path = d3.select(this).selectAll(".data_path")
        .data([null]);

        var data_path_enter = data_path.enter()
        .append("g")
        .attr("class","data_path");      

        data_path_enter.append('path')
        .attr('d',update_path(path_data))    
        .style("opacity",0.3) 
        .style("fill", "#999")
        .style("stroke", "1px solid transparent"); 

        /** 
         
        PATH UPDATE 
        
        **/

        var data_path_update = data_path.transition()
        .duration(transition_time)
        .ease(d3.easeCubicInOut);

        data_path_update.selectAll('.data_path path')
        .attr('transform',function(){
          if (representation == "linear") {
            return "translate(0,0)";
          }
          else {
            return "translate(" + (chart_dim / 2) + "," + (chart_dim / 2) + ")"
          }
        })
        .attr('d',update_path(path_data))    
        .style('fill','#ff3333');    

      });
    }

    /**

    PRIVATE HELPER FUNCTIONS

    **/

    /**

    PUBLIC HELPER FUNCTIONS

    **/

    /**

    GETTER / SETTER FUNCTIONS

    **/

    //getter / setter for relative / absolute comparison
    slumberVis.comparison = function (x) {
      if (!arguments.length) {
        return comparison;
      }
      comparison = x;
      return slumberVis;
    };

    //getter / setter for radial / linear representation
    slumberVis.representation = function (x) {
      if (!arguments.length) {
        return representation;
      }
      representation = x;
      return slumberVis;
    };

    //getter / setter for temporal granularity
    slumberVis.granularity = function (x) {
      if (!arguments.length) {
        return granularity;
      }
      granularity = x;
      return slumberVis;
    };

    //getter / setter for exit_direction
    slumberVis.exit_direction = function (x) {
      if (!arguments.length) {
        return exit_direction;
      }
      exit_direction = x;
      return slumberVis;
    };

    //getter / setter for chron_scale
    slumberVis.chron_scale = function (x) {
      if (!arguments.length) {
        return chron_scale;
      }
      chron_scale = x;
      return slumberVis;
    };

    //getter / setter for quant_scale
    slumberVis.quant_scale = function (x) {
      if (!arguments.length) {
        return quant_scale;
      }
      quant_scale = x;
      return slumberVis;
    };

    return slumberVis;

  }

 })();
diff --git a/style.css b/style.css
 @charset "UTF-8";

 body, input, textarea, select, text {
  font-family: "Segoe UI Web Regular","wf_segoe-ui_normal","Segoe UI","Segoe UI Symbol","Myriad","Calibri","UnDotum","Optima","Tahoma","Century Gothic","Helvetica Neue","BBAlpha Sans","S60 Sans","Arial",sans-serif;
  margin: 0px;
  padding: 0px;
  font-size: 1em;
 }

 @media only screen
 	and (min-device-width : 320px)
 	and (max-device-width : 480px) {
 		body {
 			font-size: 2em;
    }
 }

 #main_div {
  border: 1px solid #ccc;
  display: block;
  margin: auto;
  padding: 10px;
 }

 #main_svg {
  border: 1px solid #f99;
 }

 .chart_range {
  z-index: -1;
  border: 0px solid transparent;
  fill: #fff;
 }

 rect.midnight, text.midnight {
  border: 1px solid #999;
  fill: #999;
  font-size: 0.8em;
 }

 .target_range {
  z-index: -1;  
  fill: #eee;
 }

 circle.target_range {
  fill: #fff;
  stroke: transparent;
  stroke-width: 0px;
 }

 circle.midnight {
  stroke-width: 1px;
  stroke: #999;
  fill: transparent;
 }

 #target_range_start, #target_range_end {
  fill: #999;
  font-size: 0.8em;
 }

 .data_element {
  fill: #009688;  
  z-index: 1;
 }

 .data_element line {
  stroke: #999;
  stroke-width: 1px;
  opacity: 0.1;  
 }

 .data_element rect, .data_element path{
  stroke: #009688;
  stroke-width: 2px;
  opacity: 0;
 }

 .data_element .element_end, .data_element .element_start {
  opacity: 0.6;
  font-size: 0.8em;
 }

 .radial_data_element rect, .radial_data_element path {
  stroke: #009688;
  stroke-width: 2px;
 }

 .data_element text {
  text-align: center; 
 }

 .element_date {
  fill: #999;
  font-size: 0.8em;
 }

 .indicator {
  width: 100%;
  text-align: center;
 }
diff --git a/thumbnail.png b/thumbnail.png
	<!doctype html>
	<html xmnls="http://www.w3.org/1999/xhtml">
	<head>

	<meta http-equiv="content-type" content="text/html; charset=UTF-8">
	<meta http-equiv="X-Content-Type-Options" content="nosniff">
	<meta http-equiv="cache-control" content="no-cache, no-store">
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="expires" content="0">
	<title>Sleep duration playground</title>
	<link rel="stylesheet" href="style.css" charset="UTF-8">

	</head>

	<body>

	</body>

	<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.7.3/d3.min.js" charset="UTF-8"></script>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.10.6/moment.min.js" charset="UTF-8"></script>
	<script type="text/javascript" src="slumberVis.js" charset="UTF-8"></script>
	<script type="text/javascript" src="main.js" charset="UTF-8"></script>

	</html>
	------------------------------------------ START OF LICENSE -----------------------------------------

	Timeline Storyteller

	Copyright (c) Microsoft Corporation

	All rights reserved.

	MIT License

	Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the ""Software""), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

	The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

	THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

	----------------------------------------------- END OF LICENSE ------------------------------------------
	var width = 0,
	height = 0,
	svg_dim = 0,
	inner_padding,
	chart_dim,
	padding = 0,
	main_svg,
	chart_g,
	all_data,
	slumber_vis = d3.slumberVis(),
	min_date,
	max_date,
	first_date,
	selected_week,
	selected_month,
	selected_year,
	last_date;

	(function () {
	"use strict";

	d3.select("body").on("keydown", function () {

	switch(d3.event.keyCode) {

	case 32:
	d3.selectAll('.data_element rect').style('opacity',0.3);
	break;

	case 67: // 'C' toggle relative/absolute
	if (slumber_vis.comparison() == "relative") {
	slumber_vis.comparison("absolute");
	console.log("absolute mode");
	d3.select('#comparison_indicator').html("<p><strong>Comparison</strong>: absolute ('c' key)</p>");
	}
	else if (slumber_vis.comparison() == "absolute") {
	slumber_vis.comparison("relative");
	console.log("relative mode");
	d3.select('#comparison_indicator').html("<p><strong>Comparison</strong>: relative ('c' key)</p>");
	}
	redraw();
	break;

	case 82: // 'R' toggle representation
	if (slumber_vis.representation() == "radial") {
	slumber_vis.representation("linear");
	console.log("linear representation");
	d3.select('#representation_indicator').html("<p><strong>Representation</strong>: linear ('r' key)</p>");
	}
	else if (slumber_vis.representation() == "linear") {
	slumber_vis.representation("radial");
	console.log("radial representation");
	d3.select('#representation_indicator').html("<p><strong>Representation</strong>: radial ('r' key)</p>");
	}
	redraw();
	break;

	case 37: // move backward in time
	slumber_vis.exit_direction("right");
	console.log("move backward in time");

	if (slumber_vis.granularity() == "week"){
	first_date = moment(first_date).startOf('week').subtract(1,'weeks');
	}
	else if (slumber_vis.granularity() == "month"){
	first_date = moment(first_date).startOf('month').subtract(1,'months');
	}
	else if (slumber_vis.granularity() == "year"){
	first_date = moment(first_date).startOf('year').subtract(1,'years');
	}

	redraw();
	break;

	case 39: // move forward in time
	slumber_vis.exit_direction("left");
	console.log("move forward in time");

	if (slumber_vis.granularity() == "week"){
	first_date = moment(first_date).startOf('week').add(1,'weeks');
	}
	else if (slumber_vis.granularity() == "month"){
	first_date = moment(first_date).startOf('month').add(1,'months');
	}
	else if (slumber_vis.granularity() == "year"){
	first_date = moment(first_date).startOf('year').add(1,'years');
	}

	redraw();
	break;

	case 38: // toggle larger granularity of time
	slumber_vis.exit_direction("left")
	console.log("larger granularity");

	if (slumber_vis.granularity() == "week"){
	slumber_vis.granularity("month")
	first_date = moment(first_date).startOf('month');
	}
	else if (slumber_vis.granularity() == "month"){
	slumber_vis.granularity("year")
	first_date = moment(first_date).startOf('year');
	}
	else {
	first_date = moment(first_date);
	}

	d3.selectAll('.element_date tspan').text("");
	redraw();
	break;

	case 40: // toggle smaller granularity of time
	slumber_vis.exit_direction("right")
	console.log("smaller granularity");

	if (slumber_vis.granularity() == "month"){
	slumber_vis.granularity("week");
	first_date = moment(first_date).startOf('month').startOf("week");
	}
	else if (slumber_vis.granularity() == "year"){
	slumber_vis.granularity("month");
	first_date = moment(first_date).startOf('month');
	}
	else {
	first_date = moment(first_date);
	}

	d3.selectAll('.element_date tspan').text("");
	redraw();
	break;

	default:
	break;
	}

	});

	d3.select("body").on("keyup", function () {

	switch(d3.event.keyCode) {

	case 32:
	d3.selectAll('.data_element rect').style('opacity',0);
	break;

	default:
	break;

	};
	});

	slumber_vis.granularity("week");

	d3.select('body').append('div')
	.attr('id','main_div');

	main_svg = d3.select('#main_div').append('svg')
	.attr('id','main_svg');

	chart_g = main_svg.append('g')
	.attr('id','chart_g');

	d3.select('#main_div').append('div')
	.attr('class','indicator')
	.attr('id','comparison_indicator')
	.html("<p><strong>Comparison</strong>: relative ('c' key)</p>");

	d3.select('#main_div').append('div')
	.attr('class','indicator')
	.attr('id','representation_indicator')
	.html("<p><strong>Representation</strong>: linear ('r' key)</p>");

	d3.select('#main_div').append('div')
	.attr('class','indicator')
	.attr('id','date_indicator')
	.html("<p></p>");

	d3.select('#main_div').append('div')
	.attr('class','indicator')
	.attr('id','spacebar_indicator')
	.html("<p>(space key to show individual days)</p>");

	d3.csv("sleep.csv", function(error,data) {

	data.sort(function(x,y) {
	return d3.ascending(new Date(x.date_val).valueOf(),new Date(y.date_val).valueOf())
	})

	first_date = moment(data[0].date_val);
	min_date = first_date;
	max_date = moment(data[data.length - 1].date_val);
	selected_week = moment(first_date).week();
	selected_month = moment(first_date).month();
	selected_year = moment(first_date).year();

	all_data = data;

	last_date = d3.max(all_data, function(d){
	return new Date(d.date_val);
	})

	checkMissingDay(0);

	})

	padding = {top: 10, right: 10, bottom: 10, left: 10};

	function checkMissingDay(index) {
	if ((index + 1) < all_data.length){

	if (moment(all_data[index].date_val).add(1,'d').toDate() < last_date && moment(all_data[index].date_val).add(1,'d').toDate().valueOf() != moment(all_data[index + 1].date_val).toDate().valueOf()){

	console.log("missing day: " + moment(all_data[index].date_val).add(1,'d').toDate());

	var missingDay = {
	"date_val": moment(all_data[index].date_val).add(1,'d').toDate(),
	"time_in_bed":"00",
	"time_asleep":"00",
	"time_awake":"00",
	"adjusted_time_in_bed":"12",
	"adjusted_time_asleep":"12",
	"adjusted_time_awake":"12"
	}

	all_data.splice(index+1,0,missingDay);
	}


	checkMissingDay(index + 1);

	}
	};

	function getScrollbarWidth() {
	var outer = document.createElement("div");
	outer.style.visibility = "hidden";
	outer.style.width = "100px";
	document.body.appendChild(outer);

	var widthNoScroll = outer.offsetWidth;
	// force scrollbars
	outer.style.overflow = "scroll";

	// add innerdiv
	var inner = document.createElement("div");
	inner.style.width = "100%";
	outer.appendChild(inner);

	var widthWithScroll = inner.offsetWidth;

	// remove divs
	outer.parentNode.removeChild(outer);

	return widthNoScroll - widthWithScroll;
	}

	function redraw() {
	if (window.innerHeight < window.innerWidth) {
	width = window.innerWidth - getScrollbarWidth() - padding.left - padding.right - 2;
	height = width * 320 / 568 - getScrollbarWidth() - padding.top - padding.bottom - 2; //iphone 5 dimensions
	svg_dim = height - 2;
	}
	else {
	height = window.innerHeight - getScrollbarWidth() - padding.top - padding.bottom - 2;
	width = height * 320 / 568 - getScrollbarWidth() - padding.left - padding.right - 2; //iphone 5 dimensions
	svg_dim = width - 2;
	}

	inner_padding = svg_dim * 0.1;

	chart_dim = svg_dim * 0.8;

	d3.select('body')
	.style('width',window.innerWidth + 'px')
	.style('height',window.innerHeight + 'px');

	d3.select('#main_div')
	.style('height',height + 'px')
	.style('width',width + 'px')
	.style('transform',"translate( " + 0 + "," + ((window.innerHeight - getScrollbarWidth() - padding.top - padding.bottom - 2) / 2 - height / 2) + "px)")

	d3.select('#main_svg')
	.style('height',svg_dim + 'px')
	.style('width',svg_dim + 'px');

	chart_g.attr('transform','translate(' + inner_padding + ',' + inner_padding + ')')

	selected_week = first_date.week();
	selected_month = first_date.month();
	selected_year = first_date.year();

	if (new Date(first_date) < new Date(min_date)) {
	first_date = min_date;
	}
	else if (new Date(first_date) > new Date(max_date)) {
	first_date = max_date;
	}

	console.log("first date: " + first_date.toDate());

	d3.select('#date_indicator').html("<p><strong>Range</strong>: " + slumber_vis.granularity() + " beginning " + first_date.format("ddd MMM Do YYYY") + " (arrow keys)</p>")

	chart_g.call(slumber_vis);
	chart_g.call(slumber_vis);
	};

	var checkExist = setInterval(function() {
	if (all_data != undefined) {
	chart_g.datum(all_data);
	redraw();
	clearInterval(checkExist);
	}
	}, 100); // check every 100ms

	window.onresize = function(e) {
	console.log("redraw!")
	redraw();
	}

	})();
	@charset "UTF-8";

	body, input, textarea, select, text {
	font-family: "Segoe UI Web Regular","wf_segoe-ui_normal","Segoe UI","Segoe UI Symbol","Myriad","Calibri","UnDotum","Optima","Tahoma","Century Gothic","Helvetica Neue","BBAlpha Sans","S60 Sans","Arial",sans-serif;
	margin: 0px;
	padding: 0px;
	font-size: 1em;
	}

	@media only screen
	and (min-device-width : 320px)
	and (max-device-width : 480px) {
	body {
	font-size: 2em;
	}
	}

	#main_div {
	border: 1px solid #ccc;
	display: block;
	margin: auto;
	padding: 10px;
	}

	#main_svg {
	border: 1px solid #f99;
	}

	.chart_range {
	z-index: -1;
	border: 0px solid transparent;
	fill: #fff;
	}

	rect.midnight, text.midnight {
	border: 1px solid #999;
	fill: #999;
	font-size: 0.8em;
	}

	.target_range {
	z-index: -1;
	fill: #eee;
	}

	circle.target_range {
	fill: #fff;
	stroke: transparent;
	stroke-width: 0px;
	}

	circle.midnight {
	stroke-width: 1px;
	stroke: #999;
	fill: transparent;
	}

	#target_range_start, #target_range_end {
	fill: #999;
	font-size: 0.8em;
	}

	.data_element {
	fill: #009688;
	z-index: 1;
	}

	.data_element line {
	stroke: #999;
	stroke-width: 1px;
	opacity: 0.1;
	}

	.data_element rect, .data_element path{
	stroke: #009688;
	stroke-width: 2px;
	opacity: 0;
	}

	.data_element .element_end, .data_element .element_start {
	opacity: 0.6;
	font-size: 0.8em;
	}

	.radial_data_element rect, .radial_data_element path {
	stroke: #009688;
	stroke-width: 2px;
	}

	.data_element text {
	text-align: center;
	}

	.element_date {
	fill: #999;
	font-size: 0.8em;
	}

	.indicator {
	width: 100%;
	text-align: center;
	}