Prism Maps

http://www.mpassociates.gr/software/distrib/science/golden/PrismMap.gif
Prism Maps use variations in 3-D height to express a difference in variable. This prism map shows the number of confirmed West Nile viruses in the United states, with the shortest states having no cases, and the tallest state (Minnesota) having 661 cases. This map also uses a color code and a cooresponding key to display distances from the Mississippi River, to compare instances of West Nile and proximity to The Mississippi.