An animated "arithmopleth" map of UK unemployement rates (where available).
Inspired by Andrew Mollica's Arithmopleth Map
Last active
July 24, 2017 13:16
-
-
Save tlfrd/c1cc28bcf86d65c6320dbb31d601d9ff to your computer and use it in GitHub Desktop.
Arithmopleth Map
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| license: mit |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <script src="https://d3js.org/topojson.v2.min.js"></script> | |
| <style> | |
| html { | |
| font-family: monospace; | |
| } | |
| .constituency { | |
| fill: none; | |
| stroke-width: 0.25; | |
| stroke: #c9c9c9; | |
| } | |
| text { | |
| opacity: 0.8; | |
| cursor: default; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script> | |
| var svgWidth = 960, | |
| svgHeight = 500; | |
| var margin = {top: 20, right: 10, bottom: 20, left: 10}; | |
| var width = svgWidth - margin.left - margin.right, | |
| height = svgHeight - margin.top - margin.bottom; | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .append("g") | |
| .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
| var dataUrl = "https://raw.githubusercontent.com/ft-interactive/ge2017-dataset/master/financialTimes_ge2017_dataset.csv" | |
| d3.queue() | |
| .defer(d3.csv, dataUrl) | |
| .defer(d3.json, "topo_wpc.json") | |
| .await(ready); | |
| function ready(error, data, uk) { | |
| if (error) throw error; | |
| var dataObject = {}; | |
| data.forEach(function(d, i) { | |
| dataObject[d.PCON15CD] = d; | |
| }); | |
| var constituencies = topojson.feature(uk, uk.objects.wpc).features; | |
| var projection = d3.geoAlbers() | |
| .fitSize([width, height], topojson.feature(uk, uk.objects.wpc)); | |
| var path = d3.geoPath() | |
| .projection(projection); | |
| var centroids = []; | |
| constituencies.map(function(d) { | |
| var centroid = path.centroid(d); | |
| var info = dataObject[d.id]; | |
| var attr = "econ_unemploymentRate_2015"; | |
| if (info) { | |
| if (info[attr] != "NA") { | |
| var datum = { | |
| x: centroid[0], | |
| y: centroid[1], | |
| value: +info[attr] | |
| } | |
| centroids.push(datum); | |
| } | |
| } | |
| }); | |
| var range = d3.extent(centroids, function(d) { return Math.round(d.value)} ); | |
| var colour = d3.scaleSequential(d3.interpolateMagma) | |
| .domain(range); | |
| svg.selectAll("path") | |
| .data(constituencies) | |
| .enter().append("path") | |
| .attr("class", "constituency") | |
| .attr("d", path); | |
| var numbers = svg.selectAll("text") | |
| .data(centroids) | |
| .enter().append("text") | |
| .attr("class", "values") | |
| .attr("x", function(d) { return d.x }) | |
| .attr("y", -25) | |
| .style("text-anchor", "middle") | |
| .style("font-size", "8px") | |
| .style("fill", function(d) { return colour(Math.round(d.value)); }) | |
| .text(function(d) { return Math.round(d.value) }) | |
| .on("mouseover", function() { | |
| d3.select(this) | |
| .transition() | |
| .style("font-size", "16px"); | |
| }) | |
| .on("mouseout", function() { | |
| d3.select(this) | |
| .transition() | |
| .style("font-size", "8px"); | |
| }) | |
| numbers | |
| .transition() | |
| .duration(1000) | |
| .delay(function(d, i) { return i * 5 }) | |
| .attr("x", function(d) { return d.x }) | |
| .attr("y", function(d) { return d.y }) | |
| } | |
| </script> | |
| </body> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment