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From GeoJSON to TopoJSON in D3.js
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<!doctype html>
<meta charset="utf-8">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<title>Maps in D3js</title>
<meta name="description" content="Maps in d3js">
<meta name="author" content="Edward Mac Gillavry">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<meta name="apple-mobile-web-app-title" content="d3js">
<link rel="shortcut icon" href="">
body {
background-color: #fffaf5;
svg {
background-color: #fffaf5;
.gemeente {
fill: #ccc;
stroke-width: 0.4;
stroke: #fff;
<script src=""></script>
<script src=""></script>
let width = 450,
height = 600,
svg ="body")
.attr('width', width)
.attr('height', height);
d3.json("gemeenten2017.topojson", function(error, municipalities) {
if (error) throw error;
let gemeenten = topojson.feature(municipalities, municipalities.objects.municipalities);
let projection = d3.geoMercator()
.fitSize([width, height], gemeenten);
let path = d3.geoPath()
.attr("d", path)
.text(function(d) { return});
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