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Geo.transform d3v3 example
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| <html> | |
| <head> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.6.0/d3.js"></script> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/topojson/2.2.0/topojson.js"></script> | |
| </head> | |
| <body> | |
| <script> | |
| var width = 900; | |
| var height = 450; | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| function scale (scaleFactor,width,height,offsetX,offsetY) { | |
| return d3.geoTransform({ | |
| point: function(x, y) { | |
| this.stream.point( (x - width/2) * scaleFactor + width/2 - offsetX , - (y - height/2) * scaleFactor + height/2 + offsetY); | |
| } | |
| }); | |
| } | |
| d3.json("sa-all.json", function (error, sa){ | |
| var path = d3.geoPath().projection(scale(0.04,width,height,150,225)) | |
| svg.append("g") | |
| .selectAll("path") | |
| .data(sa.features) | |
| .enter().append("path") | |
| .attr("fill", "gray") | |
| .attr("d", path); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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