thematic map is a type of map or chart especially designed to show a particular theme connected with a specific geographic area. These maps "can portray physical, social, political, cultural, economic, sociological, agricultural, or any other aspects of a city, state, region,nation , or continent"

A thematic map is a map that focuses on a specific theme or subject area, whereas in a general map the variety of phenomena—geological, geographical, political—regularly appear together. The contrast between the both of them lies in the fact thematic maps use the base data as coastlines, boundaries and places, only as point of reference for the phenomenon being mapped. In general maps the base data as landforms, lines of transportation, settlements, and political boundaries are there for their own sake.
Thematic maps also 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. Barbara 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.

Uses of thematic maps
Thematic maps serve three primary purposes.
  • First, they provide specific information about particular locations.
  • Second, they provide general information about spatial patterns.
  • Third, they can be used to compare patterns on two or more maps.
Common examples are maps of demographic data such as population density. When designing a thematic map, cartographers must balance a number of factors in order to effectively represent the data. Besides spatial accuracy, and aesthetics, quirks of human visual perception and the presentation format must be taken into account.

Thematic Map Of India..

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