This map is rendered dynamically using d3.js with topoJSON data from the us-atlas.
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November 12, 2020 00:10
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A simple vector map of Vermont's Counties.
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| .county-boundary { | |
| fill: none; | |
| stroke: #777; | |
| stroke-dasharray: 2,2; | |
| stroke-linejoin: round; | |
| } | |
| .state-boundary { | |
| fill: none; | |
| stroke: none; | |
| stroke-linejoin: round; | |
| } | |
| text { | |
| font-family: helvetica; | |
| fill: black; | |
| font-weight: 300; | |
| text-anchor: middle; | |
| } | |
| </style> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="http://d3js.org/topojson.v1.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 700; | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| var projection = d3.geo.mercator() | |
| var path = d3.geo.path() | |
| .projection(projection); | |
| d3.json("vt-counties.json", function(error, vt) { | |
| var vermont = topojson.feature(vt, vt.objects.counties); | |
| projection | |
| .scale(1) | |
| .translate([0, 0]); | |
| var b = path.bounds(vermont), | |
| s = .95 / Math.max((b[1][0] - b[0][0]) / width, (b[1][1] - b[0][1]) / height), | |
| t = [(width - s * (b[1][0] + b[0][0])) / 2, (height - s * (b[1][1] + b[0][1])) / 2]; | |
| projection | |
| .scale(s) | |
| .translate(t); | |
| svg.selectAll(".counties") | |
| .data(topojson.feature(vt, vt.objects.counties).features) | |
| .enter().append("path") | |
| .attr("class", function(d) {return "county " + d.properties.name;}) | |
| .attr("d", path) | |
| .style("fill", "white") | |
| .transition() | |
| .duration(3000) | |
| .style("fill", "#ddc"); | |
| svg.append("path") | |
| .datum(topojson.mesh(vt, vt.objects.counties, function(a, b){return a !== b; })) | |
| .attr("d", path) | |
| .attr("class", "county-boundary"); | |
| svg.selectAll(".county-label") | |
| .data(topojson.feature(vt, vt.objects.counties).features) | |
| .enter().append("text") | |
| .attr("transform", function(d) { return "translate(" + path.centroid(d) + ")"; }) | |
| .attr("dy", ".35em") | |
| .text(function(d) { return d.properties.name; }) | |
| .style("font-size", "0px") | |
| .transition() | |
| .delay(3500) | |
| .style("font-size", "12px"); | |
| }); | |
| d3.select(self.frameElement).style("height", height + "px"); | |
| </script> |
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