In this next edition, we get our monochromatic color-scheme on, find out that junior high math came in handy, and that behind every isoline map is a 3D phoenix just waiting to rise.  This page begins to explore the first 3 of 6 most commonly used map types-CHOROPLETH, PROPORTIONAL SYMBOL, and ISOLINE maps.

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Choropleth Proportional Isoline Thumb

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