Created
August 12, 2012 13:24
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Fitting a d3 geographic map to a given canvas size.
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8" /> | |
| <style type="text/css"> | |
| #container { | |
| width: 455px; | |
| margin: auto; | |
| } | |
| #small { | |
| width: 150px; | |
| height: 150px; | |
| } | |
| #large { | |
| width: 300px; | |
| height: 300px; | |
| } | |
| circle { | |
| fill: red; | |
| } | |
| </style> | |
| <script src="http://d3js.org/d3.v2.min.js" type="text/javascript"></script> | |
| <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js" type="text/javascript"></script> | |
| </head> | |
| <body> | |
| <div id="container"> | |
| <svg id="small"> | |
| </svg> | |
| <svg id="large"> | |
| </svg> | |
| </div> | |
| <script type="text/javascript"> | |
| d3.json("world.json", function(result) { | |
| renderMap("#small", $("#small").width(), result); | |
| renderMap("#large", $("#large").width(), result); | |
| }); | |
| function renderMap(id, size, result) { | |
| var projection = d3.geo.mercator(); | |
| projection.scale(size); | |
| projection.translate([size / 2, size / 2]); | |
| var map = d3.select(id); | |
| map.selectAll("path") | |
| .data(result.features) | |
| .enter() | |
| .append("path") | |
| .attr("d", d3.geo.path().projection(projection)); | |
| } | |
| </script> | |
| </body> | |
| </html> |
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