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Constrained Voronoi with Derived Areas
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/> | |
| <script type="text/javascript" src="http://d3js.org/d3.v2.min.js"></script> | |
| <style type="text/css"> | |
| circle { | |
| stroke: #EFEDF5; | |
| fill: #EFEDF5; | |
| } | |
| line { | |
| stroke: #EFEDF5; | |
| pointer-events: none | |
| } | |
| path{ | |
| stroke: black | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <select id="colorSelect" onchange="setColor('menu')"> | |
| <option value="density">Density</option> | |
| <option value="equity">Equity</option> | |
| <option value="area">Area</option> | |
| <option value="statecode">State</option> | |
| <option value="green">Green</option> | |
| <option value="unpaved">Unpaved</option> | |
| </select> | |
| <div id="chart"> | |
| </div> | |
| <script type="text/javascript"> | |
| statesKey = {"AZ": 9,"CA": 9,"CO": 8,"DC": 3,"FL": 4,"GA": 4,"IL": 5,"MA": 1,"MI": 5,"NC": 4,"NM": 6,"NV": 9,"NY": 2,"OH": 5,"OR": 10,"PA": 3,"TN": 4,"TX": 6,"VA": 3,"WA": 10,"WI": 5}; | |
| w = 960, | |
| h = 960, | |
| links = [], | |
| voronoiVertices = [], | |
| color = d3.scale.quantize().domain([7000, 10000]).range(d3.range(2, 9)); | |
| var numVertices = 50; | |
| // vertices = d3.range(numVertices).map(function(d) { return {x: d.x, y: d.y}; }) | |
| d3.json("neighborhoods.json", function(json) { | |
| /* vertices = [{x: 0, y: 1, narea: 10}, {x: 100, y: 100, narea: 10}, {x: 0, y: 100, narea: 100}, {x: 100, y: 0, narea: 500}, {x: 0, y: 1, narea: 500}, {x: 100, y: 100, narea: 10}, {x: 0, y: 100, narea: 10}, {x: 100, y: 0, narea: 10}, | |
| {x: 0, y: 1, narea: 10}, {x: 100, y: 100, narea: 10}, {x: 0, y: 100, narea: 100}, {x: 100, y: 0, narea: 500}, {x: 0, y: 1, narea: 500}, {x: 100, y: 100, narea: 10}, {x: 0, y: 100, narea: 10}, {x: 100, y: 0, narea: 10}, | |
| {x: 0, y: 1, narea: 10}, {x: 100, y: 100, narea: 10}, {x: 0, y: 100, narea: 100}, {x: 100, y: 0, narea: 500}, {x: 0, y: 1, narea: 500}, {x: 100, y: 100, narea: 10}, {x: 0, y: 100, narea: 10}, {x: 100, y: 0, narea: 10} | |
| ] | |
| */ | |
| vertices = json; | |
| sizeMin = d3.min(vertices, function (d) { return d["area"];}); | |
| sizeMax = d3.max(vertices, function (d) { return d["area"];}); | |
| sizeMed = (sizeMin + sizeMax ) / 2; | |
| var prevEventScale = 1; | |
| xMin = d3.min(vertices, function (d) { return d["x"];}); | |
| xMax = d3.max(vertices, function (d) { return d["x"];}); | |
| yMin = d3.min(vertices, function (d) { return d["y"];}); | |
| yMax = d3.max(vertices, function (d) { return d["y"];}); | |
| sizeRamp = d3.scale.linear().domain([sizeMin,sizeMed,sizeMax]).range([-50,-250,-1000]); | |
| xRamp = d3.scale.linear().domain([xMin,xMax]).range([225,700]).clamp(true) | |
| yRamp = d3.scale.linear().domain([yMin,yMax]).range([700,225]).clamp(true) | |
| for ( n in vertices) { | |
| vertices[n]["x"] = xRamp(vertices[n]["x"]); | |
| vertices[n]["y"] = yRamp(vertices[n]["y"]); | |
| vertices[n]["statecode"] = statesKey[vertices[n]["state"]]; | |
| } | |
| /* var zoom = d3.behavior.zoom().on("zoom", function(d,i) { | |
| if (d3.event.scale > prevEventScale) { | |
| vertices.push(function(d) { return {x: d.x, y: d.y}; }) | |
| } else if (vertices.length > 2) { | |
| vertices.pop(); | |
| } | |
| force.nodes(vertices).start() | |
| prevEventScale = d3.event.scale; | |
| }); | |
| */ | |
| var svg = d3.select("#chart") | |
| .append("svg") | |
| .attr("width", w) | |
| .attr("height", h) | |
| .attr("class", "Purples") | |
| // .call(zoom) | |
| circleClip = svg.append("svg:clipPath").attr("id", "clipper").append("circle").attr("cx", w / 2).attr("cy", h / 2).attr("r", 325); | |
| force = self.force = d3.layout.force() | |
| .charge(function (d, i) { return sizeRamp(vertices[i].area)}) | |
| .size([w, h]) | |
| .on("tick", update); | |
| force.nodes(vertices).start(); | |
| circle = svg.selectAll("g.nodes"); | |
| path = svg.selectAll("path"); | |
| link = svg.selectAll("line"); | |
| }) | |
| function update(e) { | |
| voronoiVertices = vertices.map(function(o){return [o.x, o.y, o]}) | |
| path = path.data(d3.geom.voronoi(voronoiVertices)) | |
| path.enter().append("path") //group all the path elements first so they have the lowest z-order | |
| .attr("class", function(d, i) { return "q"+color(d3.geom.polygon(d).area())+"-9"; }) | |
| .attr("d", function(d) { return "M" + d.join("L") + "Z"; }) | |
| .attr("clip-path", "url(#clipper)") | |
| .style("stroke", "white") | |
| .style("stroke-width", 3) | |
| path.attr("class", function(d, i) { return "q"+color(d3.geom.polygon(d).area())+"-9"; }) | |
| .attr("d", function(d) { return "M" + d.join("L") + "Z"; }) | |
| .attr("clip-path", "url(#clipper)") | |
| path.exit().remove(); | |
| circle = circle.data(vertices) | |
| circleEnter = circle.enter().append("g") | |
| .call(force.drag) | |
| .attr("class", "nodes") | |
| .attr("r", 0) | |
| .attr("transform", function (d) { return "translate("+d.x+","+d.y+")"}); | |
| // .attr("cy", function(d) { return d.y; }) | |
| circleEnter.append("circle") | |
| .transition().duration(1000).attr("r", 5); | |
| text1 = circleEnter.append("text") | |
| .attr("opacity", 0) | |
| .style("fill", "white") | |
| .style("stroke", "white") | |
| .style("stroke-width", "3") | |
| .text(function (d,i) {return vertices[i].name}) | |
| .transition().duration(1000).attr("opacity", .75); | |
| text2 = circleEnter.append("text") | |
| .attr("opacity", 0) | |
| .style("fill", "black") | |
| .text(function (d,i) {return vertices[i].name}) | |
| .transition().duration(1000).attr("opacity", 1); | |
| circle.attr("transform", function (d) { return "translate("+d.x+","+d.y+")"}); | |
| circle.exit().transition().attr("opacity", 0).remove(); | |
| links = [] | |
| d3.geom.delaunay(voronoiVertices).forEach(function(d) { | |
| links.push(edge(d[0], d[1])); | |
| links.push(edge(d[1], d[2])); | |
| links.push(edge(d[2], d[0])); | |
| }); | |
| link = link.data(links) | |
| link.enter().append("line") | |
| link.attr("x1", function(d) { return d.source[2].x; }) | |
| .attr("y1", function(d) { return d.source[2].y; }) | |
| .attr("x2", function(d) { return d.target[2].x; }) | |
| .attr("y2", function(d) { return d.target[2].y; }) | |
| .style("stroke", "none") | |
| link.exit().remove() | |
| circleClip.attr("r", function() { return d3.max(vertices, function (d) { return d["x"] - (w / 2) + (w / 20);}) } ); | |
| } | |
| function edge(a, b) { | |
| return { | |
| source: a, | |
| target: b | |
| }; | |
| } | |
| function setColor(inputString) { | |
| if (inputString == "menu") { | |
| inputString = document.getElementById("colorSelect").value; | |
| } | |
| colorMin = d3.min(vertices, function (d) { return d[inputString];}); | |
| colorMax = d3.max(vertices, function (d) { return d[inputString];}); | |
| colorMed = (colorMin + colorMax ) / 2; | |
| // colorRamp = d3.scale.linear().domain([colorMin,colorMed,colorMax]).range(["blue","yellow","red"]); | |
| colorRamp = d3.scale.linear().domain([1,100,400]).range(["green","yellow","purple"]); | |
| path.style("fill", function(d, i) { return colorRamp(vertices[i][inputString])}) | |
| text1.text(function (d,i) {return vertices[i][inputString]}) | |
| text2.text(function (d,i) {return vertices[i][inputString]}) | |
| } | |
| </script> | |
| </body> | |
| </html> |
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| [{"state": "NM","city": "Albuquerque", "name": "Jade Park", "green": 178.31, "unpaved": 150.44, "equity": 0, "density": 4411.825, "area": 0.000059, "x": -106.573406480822, "y": 35.1675956099702},{"state": "NM","city": "Albuquerque", "name": "North Hills", "green": 332.81, "unpaved": 139.91, "equity": 0.076, "density": 5732.7, "area": 0.000014, "x": -106.567144678556, "y": 35.1692325499817},{"state": "GA","city": "Atlanta", "name": "Five Points", "green": 215.71, "unpaved": 199.98, "equity": 0, "density": 6888.816667, "area": 0.000120, "x": -84.385465384228, "y": 33.7563737151874},{"state": "IL","city": "Chicago", "name": "Archer Heights", "green": 239.07, "unpaved": 547.27, "equity": 0.348, "density": 11610.210526, "area": 0.000563, "x": -87.7263313156044, "y": 41.8107972447685},{"state": "IL","city": "Chicago", "name": "Bridgeport", "green": 239.8, "unpaved": 346.82, "equity": 0.015, "density": 16217.991837, "area": 0.000585, "x": -87.6486614217964, "y": 41.8361045075355},{"state": "IL","city": "Chicago", "name": "Brighton Park", "green": 236.06, "unpaved": 481.32, "equity": 0.393, "density": 20873.123256, "area": 0.000766, "x": -87.6988516466353, "y": 41.8173406178146},{"state": "IL","city": "Chicago", "name": "Gage Park", "green": 244.41, "unpaved": 384.46, "equity": 0.61, "density": 20898.885, "area": 0.000620, "x": -87.6962712128945, "y": 41.7953267360652},{"state": "IL","city": "Chicago", "name": "Hermosa", "green": 242.82, "unpaved": 353.93, "equity": 0.01, "density": 21960.58125, "area": 0.000329, "x": -87.7346592549289, "y": 41.9242546176081},{"state": "IL","city": "Chicago", "name": "Logan Square", "green": 203.26, "unpaved": 348.88, "equity": 0.031, "density": 25074.923656, "area": 0.000999, "x": -87.6993012469114, "y": 41.922720623487},{"state": "IL","city": "Chicago", "name": "Lower West Side", "green": 210.49, "unpaved": 267.35, "equity": 0.059, "density": 18677.606897, "area": 0.000828, "x": -87.6674408155398, "y": 41.8502928015622},{"state": "IL","city": "Chicago", "name": "Near North Side", "green": 242.11, "unpaved": 210.55, "equity": 0.106, "density": 29556.759677, "area": 0.000776, "x": -87.633348169987, "y": 41.8996121032495},{"state": "IL","city": "Chicago", "name": "South Lawndale", "green": 188.97, "unpaved": 304.36, "equity": 0.279, "density": 24669.617241, "area": 0.001284, "x": -87.7139746958142, "y": 41.8390189847862},{"state": "CO","city": "Denver", "name": "Baker", "green": 334.562, "unpaved": 164.65, "equity": 0.352, "density": 7171.47, "area": 0.000406, "x": -104.99622186268, "y": 39.7152273776428},{"state": "CO","city": "Denver", "name": "Capitol Hill", "green": 239.207, "unpaved": 114.91, "equity": 0.002, "density": 20299.568421, "area": 0.000184, "x": -104.980208711056, "y": 39.733654030677},{"state": "CO","city": "Denver", "name": "CBD", "green": 259.792, "unpaved": 137.5, "equity": 0, "density": 10145.311111, "area": 0.000117, "x": -104.993170760701, "y": 39.7451290005502},{"state": "CO","city": "Denver", "name": "Cole", "green": 178.788, "unpaved": 141.99, "equity": 0.018, "density": 9217.355556, "area": 0.000139, "x": -104.96621166265, "y": 39.7671919496971},{"state": "CO","city": "Denver", "name": "Elyria Swansea", "green": 321.114, "unpaved": 158.32, "equity": 0.36, "density": 3568.969231, "area": 0.000707, "x": -104.957567345871, "y": 39.782529006577},{"state": "CO","city": "Denver", "name": "Five Points", "green": 308.466, "unpaved": 188.39, "equity": 0.246, "density": 8745.933333, "area": 0.000481, "x": -104.98332338078, "y": 39.7590826101989},{"state": "CO","city": "Denver", "name": "Globeville", "green": 285.209, "unpaved": 139.07, "equity": 0.513, "density": 4095.290909, "area": 0.000561, "x": -104.986838210888, "y": 39.780553470417},{"state": "CO","city": "Denver", "name": "Lincoln Park", "green": 237.13, "unpaved": 153.83, "equity": 0.151, "density": 6997.57, "area": 0.000347, "x": -105.00486475429, "y": 39.7325463378095},{"state": "MI","city": "Detroit", "name": "Downtown", "green": 213.8, "unpaved": 206.55, "equity": 0.007, "density": 5658.44375, "area": 0.000349, "x": -83.0479311809308, "y": 42.3331543966093},{"state": "MI","city": "Detroit", "name": "Oakwood Heights", "green": 247.79, "unpaved": 182.93, "equity": 0.404, "density": 3683.69, "area": 0.000215, "x": -83.1554729868667, "y": 42.2874451212601},{"state": "TX","city": "El Paso", "name": "Alameda Business", "green": 337.71, "unpaved": 141.45, "equity": 0.306, "density": 7568.8, "area": 0.000086, "x": -106.452141613848, "y": 31.7738030707013},{"state": "TX","city": "El Paso", "name": "A Presidential Neighborhood", "green": 468.62, "unpaved": 132.14, "equity": 0.071, "density": 5003.2, "area": 0.000021, "x": -106.457986637011, "y": 31.773176367271},{"state": "NV","city": "Las Vegas", "name": "Charleston Heights", "green": 343.61, "unpaved": 222.56, "equity": 0.551, "density": 8017.73617, "area": 0.001139, "x": -115.232439232955, "y": 36.1696357732002},{"state": "NV","city": "Las Vegas", "name": "Downtown East", "green": 375.44, "unpaved": 143.89, "equity": 0.73, "density": 11393.052941, "area": 0.000272, "x": -115.109273099528, "y": 36.1631856346969},{"state": "NV","city": "Las Vegas", "name": "Huntridge", "green": 378.12, "unpaved": 243.22, "equity": 0.559, "density": 7251.474074, "area": 0.000641, "x": -115.13051684355, "y": 36.1508344924651},{"state": "NV","city": "Las Vegas", "name": "Michael Way", "green": 268.74, "unpaved": 131.86, "equity": 0.636, "density": 8710.304545, "area": 0.001271, "x": -115.226019645584, "y": 36.198794326284},{"state": "NV","city": "Las Vegas", "name": "Rancho Charleston", "green": 229.7, "unpaved": 170.29, "equity": 0.451, "density": 7047.487879, "area": 0.001503, "x": -115.188077802561, "y": 36.154400766166},{"state": "NV","city": "Las Vegas", "name": "Sunrise", "green": 259.53, "unpaved": 123.74, "equity": 0.47, "density": 9215.62, "area": 0.000539, "x": -115.071262939493, "y": 36.1737416271532},{"state": "CA","city": "Long Beach", "name": "Bixby Area", "green": 212.29, "unpaved": 151.7, "equity": 0, "density": 9901.688, "area": 0.000438, "x": -118.174448609751, "y": 33.8403520722534},{"state": "CA","city": "Long Beach", "name": "Circle Area", "green": 305.68, "unpaved": 229.37, "equity": 0, "density": 19557.592857, "area": 0.000496, "x": -118.147112861476, "y": 33.7915282082338},{"state": "CA","city": "Long Beach", "name": "Lakewood Village", "green": 262.89, "unpaved": 120.92, "equity": 0, "density": 7775.28, "area": 0.000256, "x": -118.133862273243, "y": 33.8397546659374},{"state": "CA","city": "Long Beach", "name": "North Long Beach", "green": 335.22, "unpaved": 228.91, "equity": 0, "density": 14358.080597, "area": 0.001631, "x": -118.177776792323, "y": 33.8641857729106},{"state": "CA","city": "Long Beach", "name": "North West Long Beach", "green": 302.05, "unpaved": 177.42, "equity": 0, "density": 10987.691667, "area": 0.000229, "x": -118.200565165054, "y": 33.873359097665},{"state": "CA","city": "Long Beach", "name": "Poly High District", "green": 338.31, "unpaved": 318.18, "equity": 0, "density": 23819.619355, "area": 0.000408, "x": -118.181196117069, "y": 33.7938237393816},{"state": "CA","city": "Long Beach", "name": "West Side", "green": 259.28, "unpaved": 223.21, "equity": 0, "density": 9693.693103, "area": 0.000613, "x": -118.214354099698, "y": 33.8039787444095},{"state": "CA","city": "Long Beach", "name": "Wrigley", "green": 431.87, "unpaved": 270.51, "equity": 0, "density": 18250.969767, "area": 0.000658, "x": -118.198133658227, "y": 33.8010320932043},{"state": "CA","city": "Los Angeles Study Area", "name": "Arleta", "green": 317.85, "unpaved": 125.26, "equity": 0.641992, "density": 10686.871875, "area": 0.000785, "x": -118.432075415734, "y": 34.2414160296821},{"state": "CA","city": "Los Angeles Study Area", "name": "Boyle Heights", "green": 354.94, "unpaved": 160.94, "equity": 0.387357, "density": 19324.693333, "area": 0.001648, "x": -118.208926999358, "y": 34.0386027081446},{"state": "CA","city": "Los Angeles Study Area", "name": "Central-Alameda", "green": 590.16, "unpaved": 322.51, "equity": 0.100405, "density": 19437.325581, "area": 0.000552, "x": -118.247751319866, "y": 34.0051929135462},{"state": "CA","city": "Los Angeles Study Area", "name": "Cypress Park", "green": 281.61, "unpaved": 155.21, "equity": 0.105596, "density": 11532.875, "area": 0.000183, "x": -118.224905397887, "y": 34.0909028520198},{"state": "CA","city": "Los Angeles Study Area", "name": "East Hollywood", "green": 555.38, "unpaved": 246.07, "equity": 0.858197, "density": 34163.269565, "area": 0.000602, "x": -118.297391681494, "y": 34.0887009705411},{"state": "CA","city": "Los Angeles Study Area", "name": "Elysian Valley", "green": 267.03, "unpaved": 115.43, "equity": 0.234168, "density": 7167.915385, "area": 0.000200, "x": -118.241711007575, "y": 34.0973280370171},{"state": "CA","city": "Los Angeles Study Area", "name": "Florence", "green": 565.43, "unpaved": 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