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Last active December 20, 2015 01:29
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D3 Sat view with hover - again so I don't lose it
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.graticule {
fill: none;
stroke: #999;
}
.states {
fill: none;
stroke: #fff;
stroke-linejoin: round;
}
.counties :hover {
fill: yellow !important;
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="http://d3js.org/d3.geo.projection.v0.min.js"></script>
<script src="http://d3js.org/topojson.v0.min.js"></script>
<script>
var width = 1200,
height = 800;
var projection = d3.geo.satellite()
.distance(1.1)
.scale(4500)
.rotate([82.00, -34.50, 32.12])
.center([-2, 5])
.tilt(30)
.clipAngle(25);
var graticule = d3.geo.graticule()
.extent([[-113, 27], [-47 + 1e-6, 57 + 1e-6]])
.step([3, 3]);
var fill = d3.scale.log()
.domain([10, 500])
.range(["brown", "steelblue"]);
var path = d3.geo.path().projection(projection);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
svg.append("path")
.datum(graticule)
.attr("class", "graticule")
.attr("d", path);
d3.json("us.json", function(error, us) {
svg.append("g")
.attr("class", "counties")
.selectAll("path")
.data(topojson.object(us, us.objects.counties).geometries)
.enter().append("path")
.attr("d", path)
.style("fill", function(d) { return fill(path.area(d)); });
svg.append("path")
.datum(topojson.mesh(us, us.objects.states, function(a, b) { return a.id !== b.id; }))
.attr("class", "states")
.attr("d", path);
});
</script>
December 17, 2012 | Thanks, Mike!
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