Friday, November 13, 2009

R Choropleth Challenge (color-shaded maps)

Link to the original FlowingData post

There are about a million ways to make a choropleth map. You know, the maps that color regions by some metric. The problem is that a lot of solutions require expensive software or have a high learning curve...or both. What if you just want a simple map without all the GIS stuff?

Oh my, that was fast! Less than 24 hours after the Choropleth Map Challenge was laid down, no fewer than 5 hackers responded with complete solutions for plotting the US unemployment data on a color-coded map, each in less than 20 lines of R code.