Monday, November 21, 2011

Range Graded Proportional Circle Map



Range Graded Proportional Circle Maps, much like Continuously Variable Proportional Circle Maps, use circles that represent data ranges. These circles, however, are limited to a set number of sizes. In this map  the rivers depicted are classified as navigable or not and then goes even further to describe the river bed's make up as well as the color of the water.


http://pubs.usgs.gov/fs/fs-004-03/images/fig5lg.gif

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