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Forked from mbostock/.block
Last active December 10, 2015 22:38
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D3 2.10 adds support for threshold scales which make it easy to apply arbitrary quantization.

<!DOCTYPE html>
<meta charset="utf-8">
<body>
<script src="https://raw.github.com/mbostock/d3/2.10.0/d3.v2.min.js"></script>
<script>
var width = 960,
height = 500;
var color = d3.scale.threshold()
.domain([2, 4, 6, 8, 10])
.range(["#f2f0f7", "#dadaeb", "#bcbddc", "#9e9ac8", "#756bb1", "#54278f"]);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
d3.json("unemployment.json", function(data) {
d3.json("readme.json", function(collection) {
svg.selectAll("path")
.data(collection.features)
.enter().append("path")
.attr("d", path)
.attr("class", function(d) { return color(data[d.id]); });
});
});
</script>
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