GeoJSON plates render correctly, whereas the TopoJSON plates do not. The plate that wraps the north pole is inverted, covering all of the oceans.
Created
October 28, 2013 20:36
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Topojson Paleogeography (normal order)
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| <!DOCTYPE html> | |
| <html lang="en" xml:lang="en" xmlns= "http://www.w3.org/1999/xhtml"> | |
| <head> | |
| <meta charset="utf-8"/> | |
| <meta http-equiv="Content-Language" content="en" /> | |
| <meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no, width=device-width"> | |
| <style> | |
| #map { | |
| height:400px; | |
| } | |
| .plates { | |
| fill: #fff; | |
| stroke:#000; | |
| stroke-width:1px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <p>Topojson</p> | |
| <div id="topoSvgMap"></div> | |
| <p>Geojson</p> | |
| <div id="svgMap"></div> | |
| <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script> | |
| <script src="http://d3js.org/topojson.v1.min.js"></script> | |
| <script src="http://d3js.org/d3.geo.projection.v0.min.js" charset="utf-8"></script> | |
| <script type="text/javascript"> | |
| var height = 500, | |
| width = 960; | |
| var projection = d3.geo.hammer() | |
| .scale(165) | |
| .translate([width / 2, height / 2]) | |
| .precision(.3); | |
| var path = d3.geo.path() | |
| .projection(projection); | |
| // Build the geojson map | |
| var svg = d3.select("#svgMap") | |
| .append("svg") | |
| .attr("height", height) | |
| .attr("width", width); | |
| svg.append("defs").append("path") | |
| .datum({type: "Sphere"}) | |
| .attr("id", "sphere") | |
| .attr("d", path); | |
| svg.append("use") | |
| .attr("class", "stroke") | |
| .attr("xlink:href", "#sphere"); | |
| svg.append("use") | |
| .attr("class", "fill") | |
| .attr("xlink:href", "#sphere"); | |
| d3.json("plates203.geojson", function(er, result) { | |
| svg.insert("path") | |
| .datum(result) | |
| .attr("class", "plates") | |
| .attr("d", path); | |
| }); | |
| // Build the topojson map | |
| var topoSvg = d3.select("#topoSvgMap") | |
| .append("svg") | |
| .attr("height", height) | |
| .attr("width", width); | |
| topoSvg.append("defs").append("path") | |
| .datum({type: "Sphere"}) | |
| .attr("id", "sphere") | |
| .attr("d", path); | |
| topoSvg.append("use") | |
| .attr("class", "stroke") | |
| .attr("xlink:href", "#sphere"); | |
| topoSvg.append("use") | |
| .attr("class", "fill") | |
| .attr("xlink:href", "#sphere"); | |
| d3.json("plates203.topojson", function(er, data) { | |
| topoSvg.insert("path") | |
| .datum(topojson.feature(data, data.objects.plates203)) | |
| .attr("class", "plates") | |
| .attr("d", path); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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