D3 Examples - Spatial region By JianiGao

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<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <title>Spatial region</title>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
  </style>
</head>
​
<body>
<!--    There are more than one method to create the given marks.
            An easy way of implementation is simply use <rect> label within <svg>.
            The HTML code below will do the same job as the D3.js script.
​
    <svg width="960" height="500">
        <rect x="10" y="20" width="20" height="20"/>
        <rect x="45" y="40" width="40" height="40"/>
        <rect x="100" y="10" width="60" height="60"/>
    </svg>  
  
-->
  <script>
    // Feel free to change or delete any of the code you see in this editor!
    var svg = d3.select("body").append("svg")
      .attr("width", 960)
      .attr("height", 500)
​
    svg.append("rect")
      .attr("x", 10)
        .attr("y", 20)
        .attr("width", 20)
        .attr("height", 20)
    
    svg.append("rect")
      .attr("x", 40)
        .attr("y", 40)
        .attr("width", 40)
        .attr("height", 40)
    
    svg.append("rect")
      .attr("x", 100)
        .attr("y", 10)
        .attr("width", 60)
        .attr("height", 60)
​
  </script>
</body>
​
    