There is a bug in the color change. I don't know why. The entire thing gives me console errors. If anyone knows how to fix please tell me.
Last active
December 16, 2015 08:39
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Slider bug with choropleth threshold
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| svg { | |
| font: 10px sans-serif; | |
| } | |
| .caption { | |
| font-weight: bold; | |
| } | |
| .key path { | |
| display: none; | |
| } | |
| .key line { | |
| stroke: #000; | |
| shape-rendering: crispEdges; | |
| } | |
| .county { | |
| fill: #eee; | |
| } | |
| .county-border { | |
| fill: none; | |
| stroke: #fff; | |
| } | |
| .state-border { | |
| fill: none; | |
| stroke: #333; | |
| } | |
| </style> | |
| <body> | |
| <body> | |
| <input type="range" min="1987" max="2010" value="1987" step="1" onchange="showValue(this.value)" /> | |
| <span id="range">1987</span> | |
| <script src="http://d3js.org/topojson.v0.min.js"></script> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="http://d3js.org/d3.geo.projection.v0.min.js"></script> | |
| <script type="text/javascript"> | |
| function showValue(newValue) { | |
| document.getElementById("range").innerHTML = newValue; | |
| } | |
| </script> | |
| <script> | |
| var width = 960, height = 600; | |
| var color = d3.scale.threshold().domain([7, 12, 20, 25]).range(["#ffffcc", "#c2e699", "#78c679", "#31a354", "#006837"]); | |
| // A position encoding for the key only. | |
| var x = d3.scale.linear().domain([7, 25]).range([0, 300]); | |
| var xAxis = d3.svg.axis().scale(x).orient("bottom").tickSize(15).tickValues(color.domain()); | |
| //adjusted for OK state plane | |
| var projection = d3.geo.conicConformal().rotate([35 + 34 / 60, 90 + 46 / 60]).rotate([98 + 00 / 60, -35 + 00 / 60]).scale(6500) | |
| .translate([width / 2, height / 2]); | |
| var path = d3.geo.path().projection(projection); | |
| var svg = d3.select("body").append("svg").attr("width", width).attr("height", height); | |
| var g = svg.append("g").attr("class", "key").attr("transform", "translate(20,20)"); | |
| g.selectAll("rect").data(color.range().map(function(d, i) { | |
| return { | |
| x0 : i ? x(color.domain()[i - 1]) : x.range()[0], | |
| x1 : i < color.domain().length ? x(color.domain()[i]) : x.range()[1], | |
| z : d | |
| }; | |
| })).enter().append("rect").attr("height", 8).attr("x", function(d) { | |
| return d.x0; | |
| }).attr("width", function(d) { | |
| return d.x1 - d.x0; | |
| }).style("fill", function(d) { | |
| return d.z; | |
| }); | |
| g.call(xAxis).append("text").attr("class", "caption").attr("y", -6); | |
| //.text("Population per square mile"); | |
| d3.json("ok-countiesStudentRatio.json", function(error, ok) { | |
| var counties = topojson.object(ok, ok.objects.counties); | |
| svg.append("g").attr("class", "county").selectAll("path").data(counties.geometries).enter().append("path").attr("d", path).style("fill", function(d) { | |
| return color(d.properties.eightyseven); | |
| }).append("title").text(function(d) { | |
| return d.properties.county; | |
| }); | |
| svg.append("path").datum(topojson.mesh(ok, ok.objects.counties, function(a, b) { | |
| return a !== b; | |
| })).attr("class", "county-border").attr("d", path); | |
| svg.append("path").datum(topojson.mesh(ok, ok.objects.counties, function(a, b) { | |
| return a === b; | |
| })).attr("class", "state-border").attr("d", path); | |
| d3.selectAll("input").on("change", function change() { | |
| var value = this.value; | |
| d3.selectAll("path").style("fill", function(d) { | |
| switch (value) { | |
| case "1987": | |
| return color(d.properties.eightyseven); | |
| break; | |
| case "1988": | |
| return color(d.properties.eightyeight); | |
| break; | |
| case "1989": | |
| return color(d.properties.eightynine); | |
| break; | |
| case "1990": | |
| return color(d.properties.ninety); | |
| break; | |
| case "1991": | |
| return color(d.properties.ninetyone); | |
| break; | |
| case "1992": | |
| return color(d.properties.ninetytwo); | |
| break; | |
| case "1993": | |
| return color(d.properties.ninetythree); | |
| break; | |
| case "1994": | |
| return color(d.properties.ninetyfour); | |
| break; | |
| case "1995": | |
| return color(d.properties.ninetyfive); | |
| break; | |
| case "1996": | |
| return color(d.properties.ninetysix); | |
| break; | |
| case "1997": | |
| return color(d.properties.ninetyseven); | |
| break; | |
| case "1998": | |
| return color(d.properties.ninetyeight); | |
| break; | |
| case "1999": | |
| return color(d.properties.ninetynine); | |
| break; | |
| case "2000": | |
| return color(d.properties.aught); | |
| break; | |
| case "2001": | |
| return color(d.properties.one); | |
| break; | |
| case "2002": | |
| return color(d.properties.two); | |
| break; | |
| case "2003": | |
| return color(d.properties.three); | |
| break; | |
| case "2004": | |
| return color(d.properties.four); | |
| break; | |
| case "2005": | |
| return color(d.properties.five); | |
| break; | |
| case "2006": | |
| return color(d.properties.six); | |
| break; | |
| case "2007": | |
| return color(d.properties.seven); | |
| break; | |
| case "2008": | |
| return color(d.properties.eight); | |
| break; | |
| case "2009": | |
| return color(d.properties.nine); | |
| break; | |
| case "2010": | |
| return color(d.properties.ten); | |
| break; | |
| } | |
| }); | |
| }); | |
| }); | |
| </script> |
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