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@bradoyler
Forked from mbostock/.block
Last active Jun 1, 2016
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U.S. TopoJSON
license: gpl-3.0

These state boundaries are extracted from a single TopoJSON file. States are stroked in thin black, and the country in thick black.

<!DOCTYPE html>
<meta charset="utf-8">
<style>
path {
fill: none;
stroke: #000;
stroke-width: .5px;
}
.land-boundary {
stroke-width: 1px;
}
.county-boundary {
stroke: #aaa;
}
</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<script>
var width = 960,
height = 500;
var path = d3.geo.path();
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
d3.json("/mbostock/raw/4090846/us.json", function(error, topology) {
if (error) throw error;
svg.append("path")
.datum(topojson.feature(topology, topology.objects.land))
.attr("d", path)
.attr("class", "land-boundary");
svg.append("path")
.datum(topojson.mesh(topology, topology.objects.states, function(a, b) { return a !== b; }))
.attr("d", path)
.attr("class", "state-boundary");
});
</script>
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