From the original block:
"Jason Davies’ implementation of the Chamberlin trimetric projection is available as d3.geo.chamberlin in the extended geographic projections plugin."
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { | |
| background: #fcfcfa; | |
| } | |
| .stroke { | |
| fill: none; | |
| stroke: #000; | |
| stroke-width: 3px; | |
| } | |
| .fill { | |
| fill: #fff; | |
| } | |
| .graticule { | |
| fill: none; | |
| stroke: #777; | |
| stroke-width: .5px; | |
| stroke-opacity: .5 | |
| } | |
| .land { | |
| fill: #222; | |
| } | |
| .boundary { | |
| fill: none; | |
| stroke: #fff; | |
| stroke-width: .5px; | |
| } | |
| </style> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="http://d3js.org/d3.geo.projection.v0.min.js"></script> | |
| <script src="http://d3js.org/topojson.v1.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 900; | |
| var projection = d3.geo.chamberlin() | |
| .points([[0, 50], [60, 50], [30, 5]]) | |
| .center([-2.5, -1.5]) | |
| .scale(510) | |
| .translate([width / 2, height / 2]) | |
| .precision(.1) | |
| .clipAngle(70); | |
| var path = d3.geo.path() | |
| .projection(projection); | |
| var graticule = d3.geo.graticule() | |
| .extent([[-15, 0], [70, 90]]); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| var defs = svg.append("defs"); | |
| defs.append("path") | |
| .attr("id", "outline") | |
| .datum(graticule.outline) | |
| .attr("d", path); | |
| defs.append("clipPath") | |
| .attr("id", "clip") | |
| .append("use") | |
| .attr("xlink:href", "#outline"); | |
| svg.append("use") | |
| .attr("class", "stroke") | |
| .attr("xlink:href", "#outline"); | |
| svg.append("use") | |
| .attr("class", "fill") | |
| .attr("xlink:href", "#outline"); | |
| svg.append("path") | |
| .datum(graticule) | |
| .attr("class", "graticule") | |
| .attr("d", path); | |
| d3.json("/mbostock/raw/4090846/world-50m.json", function(error, world) { | |
| var g = svg.insert("g", ".graticule") | |
| .attr("clip-path", "url(#clip)"); | |
| g.append("path") | |
| .datum(topojson.feature(world, world.objects.land)) | |
| .attr("class", "land") | |
| .attr("d", path); | |
| g.append("path") | |
| .datum(topojson.mesh(world, world.objects.countries, function(a, b) { return a !== b; })) | |
| .attr("class", "boundary") | |
| .attr("d", path); | |
| }); | |
| d3.select(self.frameElement).style("height", height + "px"); | |
| </script> |
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