Basic US map with d3 based on https://bost.ocks.org/mike/map/
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October 5, 2016 16:03
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US Map
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style type="text/css"> | |
| body { | |
| margin: 60px auto; | |
| width: 1000px; | |
| font-family: arial, sans; | |
| } | |
| .subunit.USB { | |
| fill: #ddc; | |
| } | |
| .place-label { | |
| fill: #000; | |
| fill-opacity: .5; | |
| font-size: 8px; | |
| text-anchor: middle; | |
| } | |
| .place-label:hover { | |
| fill: red; | |
| fill-opacity: 1; | |
| font-size: 1em; | |
| font-weight: 500; | |
| } | |
| .place { | |
| fill: #000; | |
| fill-opacity: .7; | |
| } | |
| </style> | |
| <body> | |
| </body> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js" charset="utf-8"></script> | |
| <script src="http://d3js.org/topojson.v1.min.js"></script> | |
| <script type="text/javascript"> | |
| var width = 1000, | |
| height = 600; | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| d3.json("us.json", function(error, us) { | |
| if (error) return console.error(error); | |
| // console.log(us); | |
| var subunits = topojson.feature(us, us.objects.subunits); | |
| var projection = d3.geo.albers() | |
| .scale(1000) | |
| .center([0, 35]) | |
| .translate([width / 2, height / 2]); | |
| var path = d3.geo.path() | |
| .projection(projection) | |
| .pointRadius(2); | |
| svg.append("path") | |
| .datum(subunits) | |
| .attr("d", path); | |
| svg.selectAll(".subunit") | |
| .data(topojson.feature(us, us.objects.subunits).features) | |
| .enter().append("path") | |
| .attr("class", function(d) { return "subunit " + d.id; }) | |
| .attr("d", path); | |
| svg.append("path") | |
| .datum(topojson.feature(us, us.objects.places)) | |
| .attr("d", path) | |
| .attr("class", "place"); | |
| svg.selectAll(".place-label") | |
| .data(topojson.feature(us, us.objects.places).features) | |
| .enter().append("text") | |
| .attr("class", "place-label") | |
| .attr("transform", function(d) { return "translate(" + projection(d.geometry.coordinates) + ")"; }) | |
| .attr("dy", ".35em") | |
| .text(function(d) { return d.properties.name; }); | |
| svg.selectAll(".place-label") | |
| .attr("x", function(d) { return d.geometry.coordinates[0] > -1 ? 6 : -6; }) | |
| .style("text-anchor", function(d) { return d.geometry.coordinates[0] > -1 ? "start" : "end"; }); | |
| }); | |
| </script> |
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