Continuously Variable Proportional Circle Map

A continuously variable proportional circle map is a proportional circle map which utilizes circles to create point data, rather than just dots.  The circle area is in direct correlation to the measured variable and data portrayed in the map.  This means that the area of the circles on the map do not always correlate with the area or place shown on the map.  There is no limit on the number or sizes of circles used in these maps.  The map shown above is a continuously variable proportional circle map that shows the motor vehicle deaths in the state of California by county for an unknown year.

The map URL is: http://kentmacr.blogspot.com/2010/04/range-graded-proportional-circle-map.html