A sort of colorized old atlas map style with a relief layer by Richard Edes Harrison. Uses a turbulence filter and some compositing to soften/distress the path fills and blurs the stroke. The stroke around each state is kept on the inner edge only by clipping each state to itself.
See also: Plain filled version, Unfilled version
US TopoJSON via Mike Bostock
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| svg { | |
| background: url('harrison.png') no-repeat center center; | |
| background-size: contain; | |
| } | |
| .state { | |
| stroke-width: 2px; | |
| } | |
| rect { | |
| stroke: none; | |
| fill: rgba(224,186,148,0.3); | |
| } | |
| </style> | |
| <body> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.16/d3.min.js"></script> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/topojson/1.6.20/topojson.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 500; | |
| var projection = d3.geo.albers() | |
| .rotate([96, 0]) | |
| .parallels([29.5, 45.5]) | |
| .center([-0.62, 38.65]) | |
| .scale(1065) | |
| .translate([width / 2, height / 2]) | |
| .precision(.1); | |
| var path = d3.geo.path() | |
| .projection(projection); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| var defs = svg.append("defs"); | |
| svg.append("rect") | |
| .attr("width", width) | |
| .attr("height", height); | |
| var colors = ["#00d565", "#d5008e", "#d5d500", "#0ab0cc", "#bf5a15"]; | |
| d3.json("us.json", function(err, us) { | |
| var neighbors = topojson.neighbors(us.objects.states.geometries), | |
| features = topojson.feature(us, us.objects.states).features; | |
| features.forEach(function(d,i){ | |
| // Greedy color selection | |
| d.properties.color = colors.filter(function(c){ | |
| return neighbors[i].map(function(n){ | |
| return features[n].properties.color; | |
| }).indexOf(c) === -1; | |
| })[0]; | |
| // Mix it up a bit, get fifth color in | |
| colors.push(colors.shift()); | |
| // circular <use> doesn't work in FF | |
| defs.append("clipPath") | |
| .attr("id", "clip" + i) | |
| .append("path") | |
| .attr("d", path(d)); | |
| }); | |
| svg.selectAll(".state") | |
| .data(features) | |
| .enter() | |
| .append("path") | |
| .attr("class", "state") | |
| .attr("d", path) | |
| .style("fill",function(d){ | |
| return transparent(d.properties.color, 0.3); | |
| }) | |
| .style("stroke",function(d,i){ | |
| return d.properties.color; | |
| }) | |
| .attr("clip-path", function(d,i){ | |
| return "url(#clip" + i + ")"; | |
| }) | |
| .attr("filter", "url(#splotch)"); | |
| var filter = defs.append("filter") | |
| .attr("id", "splotch"); | |
| filter.append("feTurbulence") | |
| .attr("type", "fractalNoise") | |
| .attr("baseFrequency", ".01,.01") | |
| .attr("numOctaves", 4); | |
| filter.append("feColorMatrix") | |
| .attr("values", "0 0 0 0 0, 0 0 0 0 0, 0 0 0 0 0, 0 0 0 -0.9 1.2") | |
| .attr("result", "texture"); | |
| filter.append("feComposite") | |
| .attr("in", "SourceGraphic") | |
| .attr("in2", "texture") | |
| .attr("operator", "in"); | |
| filter.append("feGaussianBlur") | |
| .attr("stdDeviation", 3.5); | |
| }); | |
| function transparent(color, alpha) { | |
| var rgb = d3.rgb(color); | |
| return "rgba(" + [rgb.r, rgb.g, rgb.b, alpha].join(",") + ")"; | |
| } | |
| </script> |
