Thursday, April 22, 2010

Digital Elevation Model (DEM)

http://www.sciencegl.com/gis_dem/map_dem_gis_3d_b.jpg
A DEM is represented by a raster, what we learned to be a grid of squares. A DEM is a digital representation of the topography and terrain of a ground surface. The most common DEM is utilized with the U.S. Geological Survey.

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