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What is a thematic map?
A thematic map displays spatial pattern of a theme or series of attributes. In contrast to reference maps which show many geographic features (forests, roads, political boun…daries), thematic maps emphasize spatial variation of one or a small number of geographic distributions. These distributions may be physical phenomena such as climate or human characteristics such as population density and health issues. These types of maps are sometimes referred to as graphic essays that portray spatial variations and interrelationships of geographical distributions. Location, of course, is also important to provide a reference base of where selected phenomena are occurring. Barbara B. Petchenik described the difference as "in place, about space." While general reference maps show where something is in space, thematic maps tell a story about that place. See the related link for more information. (MORE)