This bivariate choropleth map shows the distance from the Mississippi River as well as number of confirmed human cases of the West Nile Virus. Distance is shown by color and number of cases is shown by the height of each state.
Sunday, March 25, 2012
Bivariate choropleth maps
This bivariate choropleth map shows the distance from the Mississippi River as well as number of confirmed human cases of the West Nile Virus. Distance is shown by color and number of cases is shown by the height of each state.
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