A combination of Mike Bostock’s Atlantis projection and Jason Davies' Automatically Colored World Map
-
-
Save syntagmatic/4653097 to your computer and use it in GitHub Desktop.
Colored Atlantis Projection
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| html, body { | |
| background: #f3f3f3; | |
| } | |
| .country { | |
| fill: #ccc; | |
| stroke: #fff; | |
| stroke-width: .5px; | |
| stroke-linejoin: round; | |
| } | |
| .graticule { | |
| fill: none; | |
| stroke: #000; | |
| stroke-opacity: .5; | |
| 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.v0.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 880; | |
| var projection = d3.geo.mollweide() | |
| .rotate([30, -45, 90]) | |
| .scale(150) | |
| .translate([width * .46, height / 2]) | |
| .precision(.1); | |
| var path = d3.geo.path() | |
| .projection(projection); | |
| var graticule = d3.geo.graticule() | |
| .step([10, 10]) | |
| .extent([[-180, -80], [180, 80 + 1e-3]]); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .append("g") | |
| .attr("transform", "rotate(90 480,480)"); | |
| svg.append("g") | |
| .attr("class", "graticule") | |
| .selectAll("path") | |
| .data(graticule.lines) | |
| .enter().append("path") | |
| .attr("d", path); | |
| d3.json("readme-world.json", function(error, world) { | |
| var neighbors = topojson.neighbors(world, world.objects.countries.geometries), | |
| colors = d3.scale.category10().range().map(function(c) { c = d3.hcl(c); c.c *= .8; c.h = c.h*0.9 + 100; c.l = 60; return c; }), | |
| nColors = colors.length, | |
| colorByObject = {}; | |
| world.objects.countries.geometries.forEach(function(o, index) { | |
| var oNeighbours = neighbors[index] || [], | |
| m = oNeighbours.length; | |
| nextColor: | |
| for (var i = 0; i < nColors; ++i) { | |
| var color = colors[i]; | |
| for (var j = 0; j < m; ++j) { | |
| if (colorByObject[oNeighbours[j].id] === color) continue nextColor; | |
| } | |
| colorByObject[o.id] = color; | |
| break; | |
| } | |
| }); | |
| svg.selectAll(".country") | |
| .data(topojson.object(world, world.objects.countries).geometries) | |
| .enter().insert("path", ".graticule") | |
| .attr("class", "country") | |
| .attr("d", path) | |
| .style("fill", function(d) { return colorByObject[d.id]; }); | |
| }); | |
| topojson.neighbors = function(topology, objects) { | |
| var objectsByArc = topology.arcs.map(function() { return []; }); | |
| function line(arcs, index) { | |
| for (var i = 0, n = arcs.length, arc; i < n; ++i) { | |
| if ((arc = arcs[i]) < 0) arc = ~arc; | |
| objectsByArc[arc].push(index); | |
| } | |
| } | |
| function polygon(arcs, i) { | |
| arcs.forEach(function(arc) { line(arc, i); }); | |
| } | |
| function geometry(o, i) { | |
| geometryType[o.type](o.arcs, i); | |
| } | |
| var geometryType = { | |
| LineString: line, | |
| MultiLineString: polygon, | |
| Polygon: polygon, | |
| MultiPolygon: function(arcs, i) { arcs.forEach(function(arc) { polygon(arc, i); }); } | |
| }; | |
| objects.forEach(geometry); | |
| var neighbors = []; | |
| objectsByArc.forEach(function(d) { | |
| if (d.length < 2) return; | |
| if (!neighbors[d[0]]) neighbors[d[0]] = []; | |
| if (!neighbors[d[1]]) neighbors[d[1]] = []; | |
| neighbors[d[0]].push(objects[d[1]]); | |
| neighbors[d[1]].push(objects[d[0]]); | |
| }); | |
| return neighbors; | |
| }; | |
| d3.select(self.frameElement).style("height", height + "px"); | |
| </script> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment