Friday, April 23, 2010

Bivariate Choropleth Map

This type of map show two variables by combining different colors. These types of maps have proven extremely hard to understand.

http://revolution-computing.typepad.com/.a/6a010534b1db25970b0120a6879759970b-500wi

http://blog.revolution-computing.com/2009/11/choropleth-map-r-challenge.html
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