Saturday, August 1, 2009

28 - DEM - Digital Elevation Map


This DEM map was found at http://en.wikipedia.org/wiki/File:Oregon_DEM_relief_map.gif. It is a digital elevation map, and shows terrain elevations at regularly spaced intervals. Some of these that are created by the USGS vary in terms of different factors such as: coverage area, accuracy, sampling intervals, etc.

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