This is a proportional circle map showing the Mexican population in the western U.S in 1990. This particular map is a continuous-variable proportional circle map, meaning that there is all different sizes of circles. This differs from a range-graded proportional circle map that has only a set number of circle sizes. The map shows that Texas and California has an overwhelming percentage of the western U.S's Mexican population.
Wednesday, April 15, 2009
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