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USGS DEM
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The '''USGS DEM''' standard is a [[geospatial]] [[file format]] developed by the [[United States Geological Survey]] for storing a [[Raster graphics|raster]]-based [[digital elevation model]]. It is an [[open standard]], and is used throughout the world. It has been superseded by the USGS's own [[SDTS]] format but the format remains popular due to large numbers of legacy files, self-containment, relatively simple field structure and broad, mature software support.
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