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October 13, 2018 16:28
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Quartic Authalic with D3v4
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| license: mit |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } | |
| svg { width:100%; height: 100% } | |
| .stroke { | |
| fill: none; | |
| stroke: #000; | |
| stroke-width: 2px; | |
| } | |
| .graticule { | |
| fill: none; | |
| stroke: #777; | |
| stroke-width: .5px; | |
| stroke-opacity: .5; | |
| } | |
| .land { | |
| fill: #222; | |
| stroke: #fff; | |
| stroke-width: 0.5px; | |
| } | |
| </style> | |
| <body> | |
| <script src="https://unpkg.com/d3@4"></script> | |
| <script src="https://unpkg.com/d3-geo-projection@2"></script> | |
| <script src="https://unpkg.com/topojson-client@3"></script> | |
| <script> | |
| var width = 900; | |
| var height = 500; | |
| var svg = d3.select("body").append("svg"); | |
| //Quartic Authalic: https://bl.ocks.org/mbostock/4463175 | |
| var projection = d3.geoHammer() | |
| .coefficient(Infinity) | |
| .scale(150) | |
| .translate([width / 2, height / 2]) | |
| .precision(.1); | |
| var path = d3.geoPath().projection(projection); | |
| var graticule = d3.geoGraticule(); | |
| var defs = svg.append("defs"); | |
| defs.append("path") | |
| .datum({type: "Sphere"}) | |
| .attr("id", "sphere") | |
| .attr("d", path); | |
| svg.append("use") | |
| .attr("class", "stroke") | |
| .attr("xlink:href", "#sphere"); | |
| /* | |
| defs.append("clipPath") | |
| .attr("id", "clip") | |
| .append("use") | |
| .attr("xlink:href", "#sphere"); | |
| svg.append("use") | |
| .attr("class", "fill") | |
| .attr("xlink:href", "#sphere"); | |
| svg.append("path") | |
| .datum(graticule) | |
| .attr("class", "graticule") | |
| .attr("clip-path", "url(#clip)") | |
| .attr("d", path); | |
| */ | |
| svg.append("path") | |
| .datum(graticule) | |
| .attr("class", "graticule") | |
| .attr("d", path); | |
| d3.json("https://unpkg.com/world-atlas@1/world/50m.json", function(error, world) { | |
| if (error) throw error; | |
| svg.selectAll("path") | |
| .data(topojson.feature(world, world.objects.countries).features) | |
| .enter().append("path") | |
| .attr("class", "land") | |
| .attr("d", path); | |
| }); | |
| </script> |
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