A Swiss cantons TopoJSON example, via interactivethings.
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September 6, 2021 20:26
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Swiss Cantons
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| license: gpl-3.0 |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| .canton { | |
| fill: #bbb; | |
| } | |
| .canton-boundary { | |
| fill: none; | |
| stroke: #fff; | |
| stroke-linejoin: round; | |
| } | |
| text { | |
| font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; | |
| font-size: 10px; | |
| text-anchor: middle; | |
| } | |
| </style> | |
| <body> | |
| <script src="//d3js.org/d3.v3.min.js"></script> | |
| <script src="//d3js.org/topojson.v1.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 600; | |
| var projection = d3.geo.albers() | |
| .rotate([0, 0]) | |
| .center([8.3, 46.8]) | |
| .scale(16000) | |
| .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); | |
| d3.json("readme-swiss.json", function(error, swiss) { | |
| if (error) throw error; | |
| var cantons = topojson.feature(swiss, swiss.objects.cantons); | |
| svg.append("path") | |
| .datum(cantons) | |
| .attr("class", "canton") | |
| .attr("d", path); | |
| svg.append("path") | |
| .datum(topojson.mesh(swiss, swiss.objects.cantons, function(a, b) { return a !== b; })) | |
| .attr("class", "canton-boundary") | |
| .attr("d", path); | |
| svg.selectAll("text") | |
| .data(cantons.features) | |
| .enter().append("text") | |
| .attr("transform", function(d) { return "translate(" + path.centroid(d) + ")"; }) | |
| .attr("dy", ".35em") | |
| .text(function(d) { return d.properties.name; }); | |
| }); | |
| </script> |
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