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A special-purpose map (see map image and map) presenting a single category of information, as on a map of geology, land use, mortality, trade routes or vegetation. In depicting similar features or facts, thematic maps are functionally different from general-purpose or reference maps, which juxtapose unlike features, such as cities, political boundaries, rivers, roads and terrain. Thematic maps, which began to appear in the late seventeenth century, address spatial structure, rather than the mere existence or location of geographical phenomena (Robinson and Petchenik, 1976, pp. 116-20). (MM)
Reference Robinson, A.H. and Petchenik, B.B. 1976: The nature of maps: essays toward understanding maps and mapping. Chicago: University of Chicago Press. |
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