Map coloring
Differentiating different features of a map using different colours. / From Wikipedia, the free encyclopedia
Map coloring is a term used for two different concepts: In geography and mapmaking it is used to say that colors are assigned to certain areas on a map. Examples of this are coloring that show the countries or divisions of a country, but also to visualize other data, for example the altitude. The other use is in mathematics: There it is used to describe the problem of finding the minimal number of colors needed to color a given map.