D3 Examples - TreeMapv2

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<!DOCTYPE html>
<meta charset="utf-8">
<style>
​
rect {
  fill: none;
  stroke: #fff;
}
​
text {
  font: 8px sans-serif;
}
​
</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>
​
var width = 960,
    height = 500,
    color = d3.scale.category20c();
​
var treemap = d3.layout.treemap()
    .padding(4)
    .size([width, height])
    .value(function(d) { return d.degree; });
​
var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);
​
d3.json("graph.json", function(error, json) {
  if (error) throw error;
    console.log(json);
  var cell = svg.data([json]).selectAll("g")
      .data(treemap.nodes)
    .enter().append("g")
      .attr("class", "cell")
      .attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
​
  cell.append("rect")
      .attr("width", function(d) { return d.dx; })
      .attr("height", function(d) { return d.dy; })
      .style("fill", function(d) { return d.children ? color(d.label) : null; });
​
  cell.append("text")
      .attr("x", function(d) { return d.dx / 2; })
      .attr("y", function(d) { return d.dy / 2; })
      .attr("dy", ".35em")
      .attr("text-anchor", "middle")
      .text(function(d) { return d.children ? null : d.label; });
});
​
</script>
    