The area of each circle in this symbol map is proportional to the population of the associated state.
forked from mbostock's block: Symbol Map
Last active
August 9, 2018 22:51
-
-
Save russdb/b5971d78bd6ecb633b6adacea10ae5cf to your computer and use it in GitHub Desktop.
Symbol Map
This file contains hidden or 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: gpl-3.0 |
This file contains hidden or 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> | |
| <meta charset="utf-8"> | |
| <style> | |
| .states { | |
| fill: #ccc; | |
| stroke: #fff; | |
| } | |
| .symbol { | |
| fill: steelblue; | |
| fill-opacity: .8; | |
| stroke: #fff; | |
| } | |
| </style> | |
| <body> | |
| <script src="//d3js.org/d3.v3.min.js"></script> | |
| <script src="//d3js.org/topojson.v1.min.js"></script> | |
| <script src="//d3js.org/queue.v1.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 500; | |
| var radius = d3.scale.sqrt() | |
| .domain([0, 1e6]) | |
| .range([0, 10]); | |
| var path = d3.geo.path(); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| queue() | |
| .defer(d3.json, "https://gist.githubusercontent.com/mbostock/4090846/raw/d534aba169207548a8a3d670c9c2cc719ff05c47/us.json") | |
| .defer(d3.json, "us-state-centroids.json") | |
| .await(ready); | |
| function ready(error, us, centroid) { | |
| if (error) throw error; | |
| svg.append("path") | |
| .attr("class", "states") | |
| .datum(topojson.feature(us, us.objects.states)) | |
| .attr("d", path); | |
| svg.selectAll(".symbol") | |
| .data(centroid.features.sort(function(a, b) { return b.properties.population - a.properties.population; })) | |
| .enter().append("path") | |
| .attr("class", "symbol") | |
| .attr("d", path.pointRadius(function(d) { return radius(d.properties.population); })); | |
| } | |
| </script> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment