A variation of the unemployment choropleth using a quantile scale.
forked from mbostock's block: Quantile Choropleth
forked from seemantk's block: Quantile Choropleth
https://d3js.org/d3.v3.min.js
https://d3js.org/queue.v1.min.js
https://d3js.org/topojson.v1.min.js