A treemap recursively subdivides area into rectangles; the area of any node in the tree corresponds to its value. This example uses color to encode different packages of the Flare visualization toolkit. Treemap design invented by Ben Shneiderman. Squarified algorithm by Bruls, Huizing and van Wijk.
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| { | |
| "name": "layout", | |
| "children": [ | |
| {"name": "Delivery", "size": 2.26}, | |
| {"name": "Printing", "size": 0.9}, | |
| {"name": "Cotton", "size": 0.6}, | |
| {"name": "Shipping", "size": 0.07} | |
| ] | |
| } |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { | |
| font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; | |
| font-size: 16px; | |
| font-weight: bold; | |
| color: #fff; | |
| margin: auto; | |
| position: relative; | |
| width: 1920px; | |
| } | |
| form { | |
| position: absolute; | |
| right: 10px; | |
| top: 10px; | |
| } | |
| .node { | |
| border: solid 2px white; | |
| font: 10px sans-serif; | |
| line-height: 12px; | |
| overflow: hidden; | |
| position: absolute; | |
| text-indent: 2px; | |
| } | |
| </style> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var margin = {top: 0, right: 0, bottom: 0, left: 0}, | |
| width = 1920 - margin.left - margin.right, | |
| height = 1080 - margin.top - margin.bottom; | |
| var color = d3.scale.category20c(); | |
| var treemap = d3.layout.treemap() | |
| .size([width, height]) | |
| .sticky(true) | |
| .value(function(d) { return d.size; }); | |
| var div = d3.select("body").append("div") | |
| .style("position", "relative") | |
| .style("width", (width + margin.left + margin.right) + "px") | |
| .style("height", (height + margin.top + margin.bottom) + "px") | |
| .style("left", margin.left + "px") | |
| .style("top", margin.top + "px"); | |
| d3.json("flare.json", function(error, root) { | |
| var node = div.datum(root).selectAll(".node") | |
| .data(treemap.nodes) | |
| .enter().append("div") | |
| .attr("class", "node") | |
| .call(position) | |
| .style("background", function(d) { return d.children ? color(d.name) : null; }) | |
| .text(function(d) { return d.children ? null : d.name; }); | |
| }); | |
| function position() { | |
| this.style("left", function(d) { return d.x + "px"; }) | |
| .style("top", function(d) { return d.y + "px"; }) | |
| .style("width", function(d) { return Math.max(0, d.dx - 1) + "px"; }) | |
| .style("height", function(d) { return Math.max(0, d.dy - 1) + "px"; }); | |
| } | |
| </script> | |
| </body> | |
| </html> |
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