USA Urban population. Data from census.gov.
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August 29, 2015 14:26
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Urban Population
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <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 = 600; | |
| var projection = d3.geo.albersUsa() | |
| .scale(1100) | |
| .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("us.json", function(error, us) { | |
| if (error) throw error; | |
| svg.append("g") | |
| .selectAll("path") | |
| .data(topojson.feature(us, us.objects.usa).features) | |
| .enter().append("path") | |
| .attr("d", path) | |
| .style("stroke","#000"); | |
| svg.append("g") | |
| .selectAll("path") | |
| .data(topojson.feature(us, us.objects.urban).features) | |
| .enter().append("path") | |
| .attr("d", path) | |
| .style("fill","#fff"); | |
| }); | |
| d3.select(self.frameElement).style("height", height + "px"); | |
| </script> |
ogr2ogr
-f GeoJSON
usa.json
cb_2014_us_nation_5m.shp
ogr2ogr
-f GeoJSON
urban.json
cb_2014_us_ua10_500k.shp
topojson
-o us.json
--
usa.json
urban.json
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