#Isotype - Circles
Circle based isotypes with masking. Note: masking is done via covering with another element that has the same colour as the background rather than using a clip-path. While isotype does not actually represent the data correctly, as they are based off heigh rather than actual values.
###ToDo:
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<html lang="en">
<head>
<meta charset="utf-8">
<title>Isotype - Circle</title>
<script src="https://d3js.org/d3.v3.min.js"></script>
</head>
<body>
<div id="chart" style="border: 2px dashed black"></div>
</body>
<script src="chart.js"></script>
</html>
https://d3js.org/d3.v3.min.js