This shows what happens when using the us county data json from http://bl.ocks.org/mbostock/4122298 with Datamaps. Rendering does work properly with https://raw.githubusercontent.com/jgoodall/us-maps/master/topojson/county.json, but it takes upwards of 10 seconds to draw.
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August 29, 2015 14:24
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Datamaps with U.S. Counties
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="http://d3js.org/topojson.v1.min.js"></script> | |
| <script src="http://rawgithub.com/markmarkoh/datamaps/master/dist/datamaps.none.min.js"></script> | |
| <div id="counties" style="height: 500px; width: 900px;"></div> | |
| <script> | |
| var map = new Datamap({ | |
| element: document.getElementById('counties'), | |
| geographyConfig: { | |
| dataUrl: 'us.json' | |
| }, | |
| scope: 'counties', | |
| setProjection: function(element, options) { | |
| var projection, path; | |
| projection = d3.geo.albersUsa() | |
| .scale(element.offsetWidth) | |
| .translate([element.offsetWidth / 2, element.offsetHeight / 2 ]); | |
| path = d3.geo.path() | |
| .projection( projection ); | |
| return {path: path, projection: projection}; | |
| } | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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