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Car accidents in Russia — bare+cities
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| license: mit |
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| <!DOCTYPE html> | |
| <html lang='en'> | |
| <head> | |
| <meta charset='utf-8'> | |
| <title>Accidents on the Road - Choropleth</title> | |
| <script src='http://d3js.org/d3.v4.js'></script> | |
| <script src='http://d3js.org/topojson.v1.js'></script> | |
| <script src='http://d3js.org/colorbrewer.v1.js'></script> | |
| </head> | |
| <body> | |
| <script type='text/javascript'> | |
| var width = 960 | |
| var height = 500 | |
| var colorDomain = d3.range(300, 1501, 300) | |
| var color = d3.scaleThreshold() | |
| .range(colorbrewer['RdYlGn'][6].reverse()) | |
| .domain(colorDomain) | |
| d3.queue() | |
| .defer(d3.json, 'http://d3-js.ru/data/russia.json') | |
| .defer(d3.csv, 'http://d3-js.ru/data/accidents.csv') | |
| .defer(d3.tsv, 'http://d3-js.ru/data/cities.tsv') | |
| .await(ready) | |
| function drawMap(svg, map, cities, rateById, projection) { | |
| var path = d3.geoPath() | |
| .projection(projection) | |
| var mapData = topojson.feature(map, map.objects.russia).features | |
| svg.append('g') | |
| .attr('class', 'region') | |
| .selectAll('path') | |
| .data(mapData) | |
| .enter() | |
| .append('path') | |
| .attr('stroke', 'white') | |
| .attr('stroke-width', 1) | |
| .attr('d', path) | |
| .style('fill', function (d) { | |
| return color(rateById[d.properties.region]) | |
| }) | |
| var city = svg.selectAll('g') | |
| .data(cities) | |
| .enter() | |
| .append('g') | |
| .attr('transform', function (d) { | |
| return 'translate(' + projection([d.lon, d.lat]) + ')' | |
| }) | |
| city.append('circle') | |
| .attr('r', 1.5) | |
| .style('fill', 'white') | |
| city.append('text'); | |
| city.selectAll('text') | |
| .attr('dy', -7) | |
| .text(function (d) { return d.City }) | |
| .attr('font-family', 'sans-serif') | |
| .attr('font-size', '11px') | |
| .attr('text-anchor', 'middle') | |
| } | |
| function ready(error, map, data, cities) { | |
| var svg = d3.select('body') | |
| .append('svg') | |
| .attr('width', width) | |
| .attr('height', height) | |
| .style('margin', '10px auto') | |
| var projection = d3.geoAlbers() | |
| .rotate([-105, 0]) | |
| .center([-10, 65]) | |
| .parallels([52, 64]) | |
| .scale(700) | |
| .translate([width * 0.5, height * 0.5]) | |
| var rateById = {} | |
| data.forEach(function (d) { | |
| rateById[d.RegionCode] = Number(d.Deaths) | |
| }) | |
| drawMap(svg, map, cities, rateById, projection) | |
| } | |
| </script> | |
| </body> | |
| </html> |
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