This choropleth encodes the area of each county using color on a log scale from red to blue.
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연습 02 : Korea Area Choropleth
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license: gpl-3.0 |
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
.states { | |
fill: none; | |
stroke: #fff; | |
stroke-linejoin: round; | |
} | |
</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 fill = d3.scale.log() | |
.domain([10, 500]) | |
.range(["brown", "steelblue"]); | |
var projection = d3.geo.mercator() | |
.center([126.9895, 37.5551]) | |
.scale(70000) | |
.translate([width/2, height/2]); | |
var path = d3.geo.path().projection(projection); | |
var svg = d3.select("body").append("svg") | |
.attr("width", width) | |
.attr("height", height); | |
d3.json(".seoul_submunicipalities_topo.json", function(error, kor) { | |
if (error) throw error; | |
svg.append("g") | |
.attr("class", "counties") | |
.selectAll("path") | |
.data(topojson.feature(kor, kor.objects.seoul_submunicipalities_geo).features) | |
.enter().append("path") | |
.attr("d", path) | |
.style("fill", function(d) { return fill(path.area(d)); }); | |
svg.append("path") | |
.datum(topojson.mesh(kor, kor.objects.seoul_submunicipalities_geo, function(a, b) { return a.id !== b.id; })) | |
.attr("class", "states") | |
.attr("d", path); | |
}); | |
</script> |
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