20-class clustering of biodiversity driver zones

<!DOCTYPE html>
<meta charset="utf-8">
<title>Biodiversity Driver Zone Dendrogram</title>
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<body>
<script src="https://d3js.org/d3.v3.min.js"></script>
<script>

var radius = 960 / 2;

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d3.json("ecogwr20.json", function(error, root) {
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Modified http://d3js.org/d3.v3.min.js to a secure url

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