Dot Matrix Chart

Dot Matrix Chart to qualitatively differentiate between various groups and categories

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<!doctype html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Dot Matrix Chart</title>
​
    <script src="https://d3js.org/d3.v3.min.js"></script>
    <!--<script src="../d3.min.js"></script>-->
    <link rel="stylesheet" type="text/css" href="style.css"/>
</head>
​
<body>
    <div id="chart"></div>
</body>
    <script type="text/javascript" src="main.js"></script>
</html>
    

Modified http://d3js.org/d3.v3.min.js to a secure url

https://d3js.org/d3.v3.min.js