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niallmackenzie/index.html

Last active October 22, 2015 12:20
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index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.municipality {
fill: #ccc;
}
.municipality :hover {
fill: orange;
}
.mesh {
fill: none;
stroke: #fff;
stroke-width: .5px;
stroke-linejoin: round;
}
.county-boundary {
fill: none;
stroke: #fff;
stroke-width: 2.5px;
pointer-events: none;
}
</style>
<body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/topojson/1.6.19/topojson.min.js"></script>
<script>
var width = 960,
height = 500;
var projection = d3.geo.mercator()
// Create a path generator
var path = d3.geo.path()
.projection(projection);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
d3.json("swedenFullKommun.json", function(error, swedenFullKommun) {
if (error) throw error;
var komms = topojson.feature(swedenFullKommun, swedenFullKommun.objects.swedenFullKommun3),
jkKom = komms.features.filter(function(d) { return d.properties.KnKod == '0665'; })[0];
// Create a unit projection
projection
.scale(1)
.translate([0, 0]);
// Compute the bounds of a feature of interest, then derive scale & translate
var b = path.bounds(jkKom),
// The first (boundary percetage) value is a great cheat to control the zoom
s = .25 / Math.max((b[1][0] - b[0][0]) / width, (b[1][1] - b[0][1]) / height),
t = [(width - s * (b[1][0] + b[0][0])) / 2, (height - s * (b[1][1] + b[0][1])) / 2];
// Update the projection to use computed scale & translate
projection
.scale(s)
.translate(t);
svg.append("g")
.attr("class", "municipality")
.selectAll("path")
.data(topojson.feature(swedenFullKommun, swedenFullKommun.objects.swedenFullKommun3).features)
.enter().append("path")
.attr("d", path)
.append("title")
.text(function(d) { return d.properties.KnNamn; });
svg.append("path")
.datum(topojson.mesh(swedenFullKommun, swedenFullKommun.objects.swedenFullKommun3, function(a, b) { return a !== b; }))
.attr("class", "mesh")
.attr("d", path);
svg.append("path")
.datum(topojson.mesh(swedenFullKommun, swedenFullKommun.objects.swedenFullKommun3, function(a, b) { return a.properties.LnKod !== b.properties.LnKod; }))
.attr("class", "county-boundary")
.attr("d", path);
});
</script>
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swedenFullKommun.json
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