The U.S. Census just published county population estimates for July, 2016.
Have a look at Georgia, if the counties were sized by their population.
Notes, Thanks & How-to:
an algorithm to construct continuous area cartograms,
by James A. Dougenik, Nicholas R. Chrisman and Duane R. Niemeyer,
©1985 by the Association of American Geographers.
This Georgia example runs with d3.v2, an older version.
It’s based on a tutorial from Jeff Fletcher on his South Africa dataviz blog Limn. He bundles up the appropriate versions of cartogram, topojson and d3 here.
And in my own Github repo, here’s how I knitted all this together.
Data source: Population estimate for July, 2016 from the U.S. Census, downloaded April 25, 2017.
Improvements over the last version:
- Now resizes for mobile. 🎉
- Resets the text on buttons correctly if you press one twice
- Colorblind-friendly palette