D3 2.11’s d3.geo.path will automatically cut features for any aspect. Try
dragging to rotate the world and see a new aspect.
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Antemeridian Cutting
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| .background { | |
| fill: #a4bac7; | |
| } | |
| .foreground { | |
| fill: none; | |
| stroke: #333; | |
| stroke-width: 1.5px; | |
| } | |
| .graticule { | |
| fill: none; | |
| stroke: #fff; | |
| stroke-width: .5px; | |
| } | |
| .graticule:nth-child(2n) { | |
| stroke-dasharray: 2,2; | |
| } | |
| .land { | |
| fill: #d7c7ad; | |
| stroke: #766951; | |
| } | |
| .boundary { | |
| fill: none; | |
| stroke: #a5967e; | |
| } | |
| svg { | |
| cursor: move; | |
| } | |
| </style> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 500; | |
| var projection = d3.geo.albers().translate([width / 2 - .5, height / 1.75 - .5]).scale(120), | |
| path = d3.geo.path().projection(projection), | |
| graticule = d3.geo.graticule(); | |
| var svg = d3.select("body").append("svg") | |
| .datum({x: 0, y: 0}) | |
| .attr("width", width) | |
| .attr("height", height) | |
| .call(d3.behavior.drag() | |
| .origin(Object) | |
| .on("drag", function(d) { | |
| d.x = d3.event.x; | |
| d.y = d3.event.y; | |
| projection.rotate([d.x, -d.y, 0]); | |
| svg.selectAll("path").attr("d", path); | |
| })); | |
| svg.append("rect") | |
| .attr("class", "background") | |
| .attr("width", width) | |
| .attr("height", height); | |
| svg.selectAll(".graticule") | |
| .data(graticule.lines) | |
| .enter().append("path") | |
| .attr("class", "graticule") | |
| .attr("d", path); | |
| d3.json("/d/3682676/readme-boundaries.json", function(err, collection) { | |
| svg.insert("g", ".graticule") | |
| .attr("class", "boundary") | |
| .selectAll("path") | |
| .data(collection.geometries) | |
| .enter().append("path") | |
| .attr("d", path); | |
| }); | |
| d3.json("/d/3682676/readme-land.json", function(err, collection) { | |
| svg.insert("g", ".graticule,.boundary") | |
| .attr("class", "land") | |
| .selectAll("path") | |
| .data(collection.geometries) | |
| .enter().append("path") | |
| .attr("d", path); | |
| }); | |
| </script> |
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Hey Jason Davies, i've been working on this very project in another language.
Could we collaborate?