Monday, July 23, 2012

Bivariate Choropleth maps

http://www.geog.le.ac.uk/russianheartland/DemographicMaps/images/PopulationMaps/RaionMaps/7RaionPopDenPerCh8902.jpg

A Bivariate Choropleth map is a variation of the standard choropleth map that displays two variables on a single map by combining two different sets of graphic symbols or colors. This map conveys population density in 2002 and population change between 1989-2002 in Russia's Central Federal District. This map is considered a Bivariate because of its display of population and population change through color.

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