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The Visual Computer
Proportional symbol maps are a tool often used by cartographers and geoscience professionals to visualize geopositioned data associated with events and demographic statistics, such as earthquakes and population counts. Symbols are placed at specific locations on a map, and their areas are scaled to become proportional to the magnitudes of the data points they represent. We focus specifically on creating physically realizable drawings of symbols-opaque disks, in our case-by maximizing twodoi:10.1007/s00371-012-0727-7 fatcat:hciuy6ejtbgyxag7zh666uwtna