Definition: Base map

UN - Geographic Information Systems

A map that shows fundamental geographic features that can be used for locational reference. Sample features are roads, administrative boundaries and settlements. Base maps are used to compile new geographic data or for reference in the display of thematic map information.
United Nations, "Handbook on Geospatial Infrastructure in Support of Census Activities", Department of Economic and Social Affairs, Statistics Division, Studies in Methods, Series F No. 103, New York, 2009

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