D3 Examples - Hexbin polar area chart

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<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="description" content="Hexbin polar area chart" />
    <title>Hexbin polar area chart</title>
    <link rel="stylesheet" href="index.css">
    <script src="https://d3js.org/d3.v3.min.js"></script>
    <script src="https://d3js.org/d3.hexbin.v0.min.js?5c6e4f0"></script>
</head>
<body>
  <svg height="500" width="960">
    <defs>
      <clipPath id="left">
        <rect x="0" y="0" width="480" height="500" />
      </clipPath>
      <clipPath id="right">
        <rect x="480" y="0" width="480" height="500" />
      </clipPath>
    </defs>
  </svg>
  
  <script src="index.js"></script>
</body>
</html>
    