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G.I.S. or Thematic Mapping and Spatial Analysis Survey: What is it?
A thematic map (also called a statistical or special purpose map) displays the spatial pattern of a theme or series of attributes. In contrast to reference maps which show many geographic features (forests, roads, political boundaries), 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. We can create a visual representation of virtually any phenomenon for which supporting data is available.
G.I.S. or Thematic Mapping and Spatial Analysis Survey: Who Needs it?
Agricultural contractors, land development contractors