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May 11, 2017 19:04
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| license: mit |
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| <!DOCTYPE html> | |
| <meta charset='utf-8'> | |
| <title>US Counties</title> | |
| <svg width="960" height="600" fill="none" stroke="#000" stroke-linejoin="round" stroke-linecap="round"></svg> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <script src="https://unpkg.com/topojson-client@3"></script> | |
| <script src="https://d3js.org/d3-scale-chromatic.v1.min.js"></script> | |
| <script> | |
| // This demo modified slightly from https://bl.ocks.org/mbostock/4108203 | |
| var svg = d3.select("svg").append("g") | |
| .attr('transform', 'scale(4)translate(-700, -100)'); | |
| var path = d3.geoPath(); | |
| // This color scale works for values ranging from 2 to 10 | |
| var color = d3.scaleThreshold() | |
| .domain(d3.range(2, 10).map(function(d) { return d * 100; })) | |
| .range(d3.schemeBlues[9]); | |
| var filename = "https://raw.githubusercontent.com/qaisarmehmood/umbcvis/master/Newyork.population%20Data.csv" | |
| d3.queue() | |
| .defer(d3.json,"https://unpkg.com/us-atlas@1/us/10m.json") | |
| .defer(d3.csv, filename) | |
| .await(ready); | |
| function ready(error, us, csv) { | |
| if (error) throw error; | |
| console.log('here is the csv data:', csv); | |
| var counties = topojson.feature(us, us.objects.counties).features; | |
| // Examine one of the county features in the developer console. | |
| // The "id" attribute is a 5-digit GEOID (state + county). | |
| // See: https://www.census.gov/geo/reference/geoidentifiers.html | |
| // Get New York counties | |
| newyork = counties.filter(function(d) { return d.id.slice(0,2) === "36"; }) | |
| svg.selectAll('path.county') | |
| .data( newyork ) | |
| .enter().append("path") | |
| .attr("d", path) | |
| .attr('fill', '#fff') | |
| .attr('fill-opacity', '0') | |
| .attr("stroke", "#aaa") | |
| .attr("stroke-width", 0.5) | |
| .on('mouseover', function(d) { console.log(d); }); | |
| svg.append("path") | |
| .attr("stroke", "#aaa") | |
| .attr("stroke-width", 0.5) | |
| .attr("d", path(topojson.mesh(us, us.objects.states, function(a, b) { return a !== b; }))); | |
| //var pop= newyork[4] | |
| console.log(counties[0]); | |
| var data = d3.map(); | |
| csv.forEach(function(d) { console.log(data.get(d.id)) }); | |
| svg.selectAll('path.county') | |
| .data( counties ) | |
| .enter().append("path") | |
| .attr("d", path) | |
| .attr("stroke", "#aaa") | |
| .attr("stroke-width", 0.5) | |
| .attr("fill", function(d) { return color( +data.get(d.id).Percent ); }); | |
| svg.append("path") | |
| .attr("stroke", "#aaa") | |
| .attr("stroke-width", 0.5) | |
| .attr("d", path(topojson.mesh(us, us.objects.states, function(a, b) { return a !== b; }))); | |
| svg.append("path") | |
| .attr | |
| svg.append("path") | |
| .attr("d", path(topojson.feature(us, us.objects.nation))); | |
| } | |
| </script> |
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