- A way of presenting a map, providing a visually intuitive way to convey
quantitive or qualative information by marking each region (i.e. area on
the map) with uniform colour, shading or other markings. This allows
different regions on the map to be visually compared and contrasted.
Thematic maps (which just use colour and/or shading) are types of choropleth maps.
For more information see:
- http://everything.explained.at/Choropleth_map/ - Choropleth maps explained.