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D3 Orthographic Projection with TopoJSON
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| <html> | |
| <head> | |
| <title>D3 Orthographic Projection with TopoJSON</title> | |
| <script src="//cdnjs.cloudflare.com/ajax/libs/d3/3.4.4/d3.min.js" charset="utf-8"></script> | |
| <script src="//cdnjs.cloudflare.com/ajax/libs/topojson/1.1.0/topojson.min.js" charset="utf-8"></script> | |
| </head> | |
| <body> | |
| <div id="map-container"></div> | |
| <script> | |
| var width = 500, | |
| height = 500; | |
| d3.json('land.topojson', function(error, data) { | |
| if (error) { return error; } | |
| // Transform the TopoJSON data to GeoJSON | |
| var geojson = topojson.feature(data, data.objects.land); | |
| var div = d3.select('#map-container'), | |
| svg = div.selectAll('#map-container').data([geojson]); | |
| // Create the SVG container | |
| svg.enter().append('svg') | |
| .attr('width', width) | |
| .attr('height', height); | |
| // Create and configure the projection | |
| var projection = d3.geo.orthographic() | |
| .scale(width / 2) | |
| .translate([width / 2, height / 2]) | |
| .clipAngle(90); | |
| // Create and configure the geo path generator | |
| var path = d3.geo.path() | |
| .projection(projection); | |
| // Globe | |
| var globe = svg.append('path').datum({type: 'Sphere'}) | |
| .attr('d', path) | |
| .attr('class', 'globe') | |
| .attr('fill', '#6D9BB9'); | |
| var land = svg.selectAll('path.feature').data([geojson]) | |
| .enter() | |
| .append('path') | |
| .attr('d', path) | |
| .attr('class', 'feature') | |
| .attr('fill', '#DEE1CB'); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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| URL = http://www.naturalearthdata.com/http//www.naturalearthdata.com/download/50m/physical/ne_50m_land.zip | |
| ne_50m_land.zip: | |
| curl -LO $(URL) | |
| ne_50m_land.shp: ne_50m_land.zip | |
| unzip ne_50m_land.zip | |
| touch ne_50m_land.shp | |
| land.json: ne_50m_land.shp | |
| ogr2ogr -f GeoJSON land.json ne_50m_land.shp | |
| land.topojson: land.json | |
| topojson -o land.topojson land.json | |
| clean: | |
| rm ne_50m_land* | |
| rm land.json |
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