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                <!DOCTYPE html>
    <meta charset="utf-8">
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>d3-voronoi-treemap usage</title>
    <meta name="description" content="d3-voronoi-treemap plugin to remake 'The Costs of Being Fat, in Actual Dollars'">
    <script src="//" charset="utf-8"></script>
    <script src=""></script>
    <script src=""></script>
    <script src=""></script>
      svg {
        background-color: #FFFFFF;

      #title {
        letter-spacing: 4px;
        font-weight: 700;
        font-size: x-large;

      text.tiny {
        font-size: 10pt;
      text.light {
        fill: lightgrey

      .world {
        stroke: lightgrey;
        stroke-width: 4px;

      .cell {
        stroke: white;
        stroke-width: 1px;

      .label {
        text-anchor: middle;
        fill: white;

      .label>.name {
        dominant-baseline: text-after-edge;

      .label>.value {
        dominant-baseline: text-before-edge;

      .hoverer {
        fill: transparent;
        stroke: white;

      .hoverer:hover {
        stroke-width: 3px;

      .legend-color {
        stroke-width: 1px;

      //begin: constants
      var _2PI = 2*Math.PI;
      //end: constants

      //begin: layout conf.
      var svgWidth = 600,
          svgHeight = 600,
          margin = {top: 10, right: 10, bottom: 10, left: 10},
          height = svgHeight - - margin.bottom,
          width = svgWidth - margin.left - margin.right,
          halfWidth = width/2,
          halfHeight = height/2,
          quarterWidth = width/4,
          quarterHeight = height/4,
          titleY = 20,
          legendsMinY = height - 20,
          treemapRadius = 290,
          treemapCenter = [halfWidth, halfHeight+5];
      //end: layout conf.

      //begin: treemap conf.
      var _voronoiTreemap = d3.voronoiTreemap();
      var hierarchy, circlingPolygon;
      //end: treemap conf.

      //begin: drawing conf.
      var fontScale = d3.scaleLinear();
      //end: drawing conf.

      //begin: reusable d3Selection
      var svg, drawingArea, treemapContainer;
      //end: reusable d3Selection

      var data = {"name": "world",
                  "children": [
                      "name": "Asia",
                      "color": "#f58321",
                      "children": [
                        {"name": "China", "weight": 30.84, "code": "CN"},
                        {"name": "Japan", "weight": 5.91, "code": "JP"},
                        {"name": "India", "weight": 2.83, "code": "IN"},
                        {"name": "South Korea", "weight": 1.86, "code": "KR"},
                        {"name": "Russia", "weight": 1.8, "code": "RU"},
                        {"name": "Indonesia", "weight": 1.16, "code": "ID"},
                        {"name": "Turkey", "weight": 0.97, "code": "TR"},
                        {"name": "Saudi Arabia", "weight": 0.87, "code": "SA"},
                        {"name": "Iran", "weight": 0.57, "code": "IR"},
                        {"name": "Thaïland", "weight": 0.53, "code": "TH"},
                        {"name": "United Arab Emirates", "weight": 0.5, "code": "AE"},
                        {"name": "Hong Kong", "weight": 0.42, "code": "HK"},
                        {"name": "Israel", "weight": 0.4, "code": "IL"},
                        {"name": "Malasya", "weight": 0.4, "code": "MY"},
                        {"name": "Singapore", "weight": 0.39, "code": "SG"},
                        {"name": "Philippines", "weight": 0.39, "code": "PH"}
                      "name": "North America",
                      "color": "#ef1621",
                      "children": [
                        {"name": "United States", "weight": 24.32, "code": "US"},
                        {"name": "Canada", "weight": 2.09, "code": "CA"},
                        {"name": "Mexico", "weight": 1.54, "code": "MX"}
                      "name": "Europe",
                      "color": "#77bc45",
                      "children": [
                        {"name": "Germany", "weight": 4.54, "code": "DE"},
                        {"name": "United Kingdom", "weight": 3.85, "code": "UK"},
                        {"name": "France", "weight": 3.26, "code": "FR"},
                        {"name": "Italy", "weight": 2.46, "code": "IT"},
                        {"name": "Spain", "weight": 1.62, "code": "ES"},
                        {"name": "Netherlands", "weight": 1.01, "code": "NL"},
                        {"name": "Switzerland", "weight": 0.9, "code": "CH"},
                        {"name": "Sweden", "weight": 0.67, "code": "SE"},
                        {"name": "Poland", "weight": 0.64, "code": "PL"},
                        {"name": "Belgium", "weight": 0.61, "code": "BE"},
                        {"name": "Norway", "weight": 0.52, "code": "NO"},
                        {"name": "Austria", "weight": 0.51, "code": "AT"},
                        {"name": "Denmark", "weight": 0.4, "code": "DK"},
                        {"name": "Ireland", "weight": 0.38, "code": "IE"}
                      "name": "South America",
                      "color": "#4aaaea",
                      "children": [
                        {"name": "Brazil", "weight": 2.39, "code": "BR"},
                        {"name": "Argentina", "weight": 0.79, "code": "AR"},
                        {"name": "Venezuela", "weight": 0.5, "code": "VE"},
                        {"name": "Colombia", "weight": 0.39, "code": "CO"}
                      "name": "Australia",
                      "color": "#00acad",
                      "children": [
                        {"name": "Australia", "weight": 1.81, "code": "AU"}
                      "name": "Africa",
                      "color": "#f575a3",
                      "children": [
                        {"name": "Nigeria", "weight": 0.65, "code": "NG"},
                        {"name": "Egypt", "weight": 0.45, "code": "EG"},
                        {"name": "South Africa", "weight": 0.42, "code": "ZA"}
                      "name": "Rest of the World",
                      "color": "#592c94",
                      "children": [
                        {"name": "Rest of the World", "weight": 9.41, "code": "RotW"}

      var json = JSON.stringify(data);


      hierarchy = d3.hierarchy(data).sum(function(d){ return d.weight; });


      function initData(rootData) {
        circlingPolygon = computeCirclingPolygon(treemapRadius);
        fontScale.domain([3, 20]).range([8, 20]).clamp(true);

      function computeCirclingPolygon(radius) {
        var points = 60,
            increment = _2PI/points,
            circlingPolygon = [];

        for (var a=0, i=0; i<points; i++, a+=increment) {
            [radius + radius*Math.cos(a), radius + radius*Math.sin(a)]

        return circlingPolygon;

      function initLayout(rootData) {
        svg ="svg")
          .attr("width", svgWidth)
          .attr("height", svgHeight);

        drawingArea = svg.append("g")
          .classed("drawingArea", true)
          .attr("transform", "translate("+[margin.left,]+")");

        treemapContainer = drawingArea.append("g")
          .classed("treemap-container", true)
          .attr("transform", "translate("+treemapCenter+")");

          .classed("world", true)
          .attr("transform", "translate("+[-treemapRadius,-treemapRadius]+")")
          .attr("d", "M"+circlingPolygon.join(",")+"Z");

      function drawTreemap(hierarchy) {
        var leaves=hierarchy.leaves();

        var cells = treemapContainer.append("g")
        .classed('cells', true)
        .attr("transform", "translate("+[-treemapRadius,-treemapRadius]+")")
        .classed("cell", true)
        .attr("d", function(d){ return "M"+d.polygon.join(",")+"z"; })
        .style("fill", function(d){

        var labels = treemapContainer.append("g")
        .classed('labels', true)
        .attr("transform", "translate("+[-treemapRadius,-treemapRadius]+")")
        .classed("label", true)
        .attr("transform", function(d){
          return "translate("+[,]+")";
        .style("font-size", function(d){ return fontScale(; });

          .classed("name", true)
          return (<1)? :;
          .classed("value", true)
          .text(function(d){ return; });

        var hoverers = treemapContainer.append("g")
        .classed('hoverers', true)
        .attr("transform", "translate("+[-treemapRadius,-treemapRadius]+")")
        .classed("hoverer", true)
        .attr("d", function(d){ return "M"+d.polygon.join(",")+"z"; });

          .text(function(d) { return + "\n" + d.value; });