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Created December 8, 2017 03:05
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U.S. Counties TopoJSON
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.block
license: gpl-3.0
height: 600
border: no
Raw
README.md
Raw
index.html
<!DOCTYPE html>
<style>
.counties :hover {
fill: red;
}
.county-borders {
fill: none;
stroke: #fff;
stroke-width: 0.5px;
stroke-linejoin: round;
stroke-linecap: round;
pointer-events: none;
}
</style>
<svg width="960" height="600"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script src="https://d3js.org/topojson.v2.min.js"></script>
<script>
var svg = d3.select("svg");
var path = d3.geoPath();
d3.json("https://d3js.org/us-10m.v1.json", function(error, us) {
if (error) throw error;
var set1 = d3.set([
48111, 48421, 48195, 48357, 48295, 48205, 48341, 48233, 48393, 48211,
48359, 48375, 48065, 48179, 48483, 48485, 48077, 48337, 48237, 48009,
48503, 48023, 48269, 48125, 48107, 48303, 48219, 48079, 48501, 48445,
48117, 48381, 48011, 48129, 48087, 48369, 48069, 48437, 48045, 48191,
48075, 48017, 48279, 48189, 48153, 48345, 48101, 48155, 48197, 48487,
48305, 48169
]);
var region1 = {type: "FeatureCollection", name: "myRegion", features: topojson.feature(us, us.objects.counties).features.filter(function(d) {return set1.has(d.id); })};
console.log(region1)
svg.append("g")
.attr("class", "counties")
.selectAll("path")
.data(topojson.feature(us, us.objects.counties).features)
.enter().append("path")
.attr("d", path);
svg.append("path")
.attr("class", "county-borders")
.attr("d", path(topojson.mesh(us, us.objects.counties, function(a, b) { return a !== b; })));
});
</script>
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