valv

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <script src="https://d3js.org/d3-hierarchy.v1.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0;
    	background-color: #222;
    }
    rect { fill: #FFF; }
  </style>
</head>

<body>
  <script>
		var width = screen.availWidth;
    var height = screen.availHeight;
    
    var svg = d3.select("body").append("svg")
      .attr("width", width)
      .attr("height", height)
    
    var treemapNode = svg.append("g")
    	.attr("transform", "translate("+(width/2-180)+","+(height/2-180)+")")
    
    var data =
        [{
  language:
          {name: "English", code: "en"},
  categories: [
    {name: "People",
     subcategories: [
       {name: "Politicians", articles: [
         {quality: 100}, {quality: 50}
       ]},
       {name: "Scientists", articles: [
         {quality: 120}, {quality: 30}
       ]}
     ]},
     {name: "Things",
      subcategories: [
       {name: "Materials", articles: [
         {quality: 55}, {quality: 85}
       ]},
       {name: "Electronics", articles: [
         {quality: 50}, {quality: 30}
       ]}
     ]}
    ]
 }]
    
    
    
    var node = d3.hierarchy(data[0], function(d){
      return d.categories || d.subcategories || d.articles || null;
    })
    
    var treemap = d3.treemap()
    .size([360, 360])
    .padding(2);

</script>
</body>

https://d3js.org/d3.v4.min.js

https://d3js.org/d3-hierarchy.v1.min.js