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d3 geo
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| license: mit |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <html> | |
| <head> | |
| <title>D3.js v4 Mapping Tutorial 1</title> | |
| <style> | |
| svg { | |
| font-family: sans-serif; | |
| } | |
| path.feature { | |
| fill: rgba(255, 0, 0, 0.5); | |
| } | |
| path.feature:hover { | |
| fill: rgba(255, 140, 0, 0.5); | |
| cursor: zoom-in; | |
| } | |
| text.halo { | |
| opacity: 0.7; | |
| stroke: #fff; | |
| stroke-width: 5px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script src="//cdnjs.cloudflare.com/ajax/libs/d3/4.3.0/d3.min.js"></script> | |
| <script> | |
| var projection = d3 | |
| .geoMercator() | |
| .scale(800) | |
| // .rotate([-0.25, 0.25, 0]) | |
| .center([77.5356944, 45.0747547]); | |
| var path = d3.geoPath().projection(projection); | |
| var map = d3.select("body") | |
| .append("svg") | |
| .attr("width", 960) | |
| .attr("height", 500); | |
| var labels = map.append('g').attr('class', 'labels') | |
| d3.json("qazaqstan.json", drawMaps); | |
| function drawMaps(geojson) { | |
| map.selectAll("path") | |
| .data(geojson.features) | |
| .enter() | |
| .append("path") | |
| .attr("d", path) | |
| .attr("fill", "steelblue") | |
| .attr("fill-opacity", 0.1) | |
| .attr("stroke", "steelblue") | |
| labels.selectAll('.label').data(geojson.features).enter().append('text') | |
| .attr("class", "halo") | |
| .attr('transform', function(d) { | |
| return "translate(" + path.centroid(d) + ")"; | |
| }) | |
| .style('text-anchor', 'middle') | |
| .text(function(d) { | |
| return d.properties.name | |
| }); | |
| labels.selectAll('.label').data(geojson.features).enter().append('text') | |
| .attr("class", "label") | |
| .attr('transform', function(d) { | |
| return "translate(" + path.centroid(d) + ")"; | |
| }) | |
| .style('text-anchor', 'middle') | |
| .text(function(d) { | |
| return d.properties.name | |
| }); | |
| } | |
| d3.json("cities.json", drawCities); | |
| function drawCities(geojson) { | |
| console.log(geojson) | |
| map.selectAll(".symbol") | |
| .data(geojson.features.sort(function(a, b) { return b.properties.population - a.properties.population; })) | |
| .enter().append("path") | |
| .attr("class", "symbol") | |
| .attr("d", path.pointRadius(function(d) { return radius(d.properties.population); })); | |
| } | |
| </script> | |
| </body> | |
| </html> |
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