Tuesday, July 16, 2013

Bivariate choropleth map

http://www.geo.unizh.ch/~annal/Choropleth%20maps.html


A Bivariate choropleth map uses 2 variables to display information on one map. To differentiate between the 2 variables symbols or colors can be used to show the different relationships of phenomenon in the map. The above map shows 2 variables of information being displayed in the map using colors. The blue shades represent the percentage of rural populations and the red colors represent percentage of population under the age of 18. The map then takes the separate information and places it into a larger map where you can see how the two phenomenons differentiate.

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