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Custom Map Data in Datamaps
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<!DOCTYPE html>
<meta charset="utf-8">
<script src=""></script>
<script src=""></script>
<script src=""></script>
<div id="afghan" style="height: 500px; width: 900px;"></div>
var map = new Datamap({
element: document.getElementById('afghan'),
geographyConfig: {
dataUrl: 'customAfghanMap.topo.json'
scope: 'afghan',
fills: {
defaultFill: '#bada55',
someKey: '#fa0fa0'
data: {
'AFG-1758': {fillKey: 'someKey'},
'AFG-1747': {fillKey: 'someKey'}
setProjection: function(element) {
var projection = d3.geo.mercator()
.center([66.166667, 34.4444])
.translate([element.offsetWidth / 2, element.offsetHeight / 2]);
var path = d3.geo.path().projection(projection);
return {path: path, projection: projection};

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amupfill commented May 23, 2014

Thanks for this very useful example. I have been able to copy what you have, but when I try to use a different topojson file, I get the error: "Uncaught TypeError: Cannot read property 'offsetWidth' of null."

Have you come across this before? There doesn't seem to be anything fundamentally different between my topojson ( and yours, so I'm really not sure what's going on.

Code for my example is here:

All the best,


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Peege151 commented Apr 17, 2015

Can you post the queries you made with ogr2ogr and topojson in order to make the map that you show Using the queries:

ogr2ogr \
-f GeoJSON
-where "ADM0_A3 IN ('AFG')"


topojson \
--id-property adm1_code
-p name=NAME
-p name
-o customAfghanMap.topo.json

does not get me the same output in the customAfghanMap.topo.json.

Here is what I get:


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sayedisrar commented Jun 10, 2018

Dear Sir,
i want to display label on each label on the map of afghanistan, i tried many ways but could not display label,
will you help me please

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