Map #22: Range Graded Proportional Circle Map

http://www.neiu.edu/~ejhowens/377/examples.htm

These maps are mapped with a circle instead of a dot and the size of the dot tells how dense the population is in that area. This range-graded proportional map displays only a set number of circle sizes used in the map (four). It shows the estimated number of Filipinos living in these particular states in 2000. The majority of the Filipino population resides in Texas.



http://www.gis.unbc.ca/courses/geog205/lectures/theme_map_pd/index.php

This is also a range graded Proportional Circle Map because it uses a set number of circles rather than a variety in circle size.