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<html> |
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<head> |
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<style> |
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body { |
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margin: 0; |
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font-family: "Helvetica Neue", sans-serif; |
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} |
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#map .subunit { |
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fill: #ddd; |
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stroke: #fff; |
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stroke-width: 1px; |
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} |
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#map .subunit.selected { |
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stroke: #000; |
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stroke-width: 2px; |
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} |
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#map .subunit-boundary { |
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fill: none; |
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stroke: #3a403d; |
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} |
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#map .place, |
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.place-label { |
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pointer-events: none; |
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} |
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#map .place-label { |
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font-size: .7em; |
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text-shadow: 0px 0px 2px #fff; |
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} |
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#tip { |
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position: absolute; |
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background: #fff; |
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opacity: .9; |
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padding: 10px; |
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} |
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#legend { |
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position: absolute; |
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left: 10px; |
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top: 10px; |
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} |
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#legend .legend-title { |
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margin-bottom: 4px; |
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font-weight: bold; |
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} |
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#legend .legend-item { |
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margin-bottom: 4px; |
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font-size: .8em; |
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} |
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#legend .legend-swatch, |
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#legend .legend-value { |
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display: inline-block; |
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vertical-align: bottom; |
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} |
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#legend .legend-swatch { |
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width: 16px; |
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height: 16px; |
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margin-right: 4px; |
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} |
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</style> |
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</head> |
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<body> |
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<div id="tip"></div> |
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<div id="legend"> |
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<div class="legend-title">Legend</div> |
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</div> |
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<div id="map"></div> |
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<script src="https://d3js.org/d3.v4.min.js"></script> |
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<script src="https://unpkg.com/d3-moveto@0.0.3/build/d3-moveto.js"></script> |
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<script src="https://cdnjs.cloudflare.com/ajax/libs/topojson/1.6.20/topojson.min.js"></script> |
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<script src="https://unpkg.com/jeezy@1.12.0/lib/jeezy.min.js"></script> |
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<script src="https://cdnjs.cloudflare.com/ajax/libs/chroma-js/1.3.4/chroma.min.js"></script> |
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<script> |
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var match_property = "dist", |
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value_property = "value", |
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colors = ["#edf8fb", "#b2e2e2", "#66c2a4", "#2ca25f", "#006d2c"], |
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breakType = "e"; |
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var width = window.innerWidth, |
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height = window.innerHeight; |
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var projection = d3.geoMercator(); |
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var path = d3.geoPath() |
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.projection(projection) |
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.pointRadius(2); |
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var svg = d3.select("#map").append("svg") |
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.attr("width", width) |
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.attr("height", height); |
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d3.queue() |
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.defer(d3.json, "map.json") |
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.defer(d3.csv, "data.csv") |
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.await(ready); |
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function ready(error, geo, data) { |
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if (error) throw error; |
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centerZoom(geo, width, height); |
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drawSubUnits(geo); |
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drawPlaces(geo); |
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drawOuterBoundary(geo); |
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fillSubUnits(data); |
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drawTip(data); |
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drawLegend(data); |
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window.addEventListener("resize", resize); |
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function resize(){ |
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var width = window.innerWidth, |
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height = window.innerHeight; |
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svg.attr("width", width).attr("height", height); |
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centerZoom(geo, width, height); |
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d3.selectAll("path").attr("d", path); |
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d3.selectAll("text").attr("transform", function(d) { return "translate(" + projection(d.geometry.coordinates) + ")"; }); |
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} |
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} |
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function drawLegend(data, breakType, breakCount) { |
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var breakCount = colors.length; |
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var limits = chroma.limits(data.map(function(d) { |
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return +d[value_property]; |
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}), breakType, breakCount); |
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colors.forEach(function(color, color_index) { |
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d3.select("#legend").append("div") |
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.attr("class", "legend-item") |
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.html("<div class='legend-swatch' style='background: " + color + "'></div><div class='legend-value'>" + jz.str.numberLakhs(limits[color_index].toFixed(1)) + " - " + jz.str.numberLakhs(limits[color_index + 1].toFixed(1)) + "</div>"); |
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}); |
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} |
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function fillSubUnits(data, breakType, breakCount) { |
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var breakCount = colors.length; |
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var limits = chroma.limits(data.map(function(d) { |
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return +d[value_property]; |
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}), breakType, breakCount); |
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svg.selectAll(".subunit") |
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.style("fill", function(d, i) { |
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var match = matchData(d, data); |
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var return_color = []; |
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limits.forEach(function(limit, limit_index) { |
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if (+match[value_property] >= limit && +match[value_property] <= limits[limit_index + 1]) { |
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return_color.push(colors[limit_index]); |
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} |
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}); |
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return return_color[0]; |
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}); |
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} |
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function drawTip(data) { |
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svg.selectAll(".subunit") |
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.on("mouseover", function(d) { |
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d3.select("#tip").style("display", "block"); |
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var match = matchData(d, data); |
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// make the content |
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var keys = Object.keys(match); |
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var content = keys.map(function(key) { |
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return "<b>" + key + "</b>: " + match[key]; |
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}).join("<br />"); |
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d3.select("#tip").html(content); |
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d3.select(".subunit." + jz.str.toSlugCase(d.properties[match_property])).classed("selected", true).moveToFront(); |
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d3.selectAll(".place").moveToFront(); |
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d3.selectAll(".place-label").moveToFront(); |
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}) |
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.on("mousemove", function() { |
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// tip positioning |
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var coordinates = [0, 0]; |
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coordinates = d3.mouse(this); |
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var x = coordinates[0]; |
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var y = coordinates[1]; |
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d3.select("#tip") |
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.style("left", x + 20) |
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.style("top", y - 20); |
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}) |
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.on("mouseout", function() { |
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d3.select("#tip").style("display", "none"); |
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d3.selectAll(".subunit").classed("selected", false); |
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d3.select(".subunit-boundary").moveToFront(); |
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}); |
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} |
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function matchData(d, data) { |
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return data.filter(function(e) { |
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return d.properties[match_property] == e[match_property]; |
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})[0]; |
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} |
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function centerZoom(data, width, height) { |
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projection.fitSize([width, height], topojson.feature(data, data.objects.polygons)); |
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} |
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function drawOuterBoundary(data) { |
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var boundary = topojson.mesh(data, data.objects.polygons, function(a, b) { return a === b; }); |
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svg.append("path") |
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.datum(boundary) |
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.attr("d", path) |
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.attr("class", "subunit-boundary"); |
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} |
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function drawPlaces(data) { |
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svg.append("path") |
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.datum(topojson.feature(data, data.objects.places)) |
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.attr("d", path) |
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.attr("class", "place"); |
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svg.selectAll(".place-label") |
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.data(topojson.feature(data, data.objects.places).features) |
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.enter().append("text") |
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.attr("class", "place-label") |
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.attr("transform", function(d) { |
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return "translate(" + projection(d.geometry.coordinates) + ")"; |
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}) |
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.attr("dy", ".35em") |
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.attr("x", function(d) { |
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return projection(d.geometry.coordinates)[0] <= width / 2 ? -6 : 6; |
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}) |
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.style("text-anchor", function(d) { |
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return projection(d.geometry.coordinates)[0] <= width / 2 ? "end" : "start"; |
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}) |
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.text(function(d) { |
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return d.properties.name; |
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}); |
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} |
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function drawSubUnits(data) { |
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svg.selectAll(".subunit") |
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.data(topojson.feature(data, data.objects.polygons).features) |
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.enter().append("path") |
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.attr("class", function(d) { |
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return "subunit " + jz.str.toSlugCase(d.properties[match_property]); |
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}) |
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.attr("d", path); |
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} |
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</script> |
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</body> |
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</html> |
