Proportional circle maps, quite simply, use proportional circle (or other symbol) sizes to illustrate differences in areas of a set of data. However, creating a proportional circle map can be quite complicated, especially when determining the formulas for determining circle size to avoid circles becoming too large and no longer representing a single area. This map represents population sizes in each given area in proportion to the population size of other areas. The map shown can also be classified as planimetric and thematic. This map would not classify as a dot distribution map, because dot distribution maps are based on quantity of symbols rather than size.
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