Geographical visualizations

Choropleth maps

A choropleth map (Greek χώρο– + πλήθ, ("area/region" + "multitude") is a thematic map in which areas are shaded or patterned in proportion to the measurement of the statistical variable being displayed on the map, such as population density or per-capita income. http://en.wikipedia.org/wiki/Choropleth_map

Projections