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What is a digital elevation model?

April 26, 2017digital ELEVATION model

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What is a digital elevation model?

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A digital elevation model is a representation of the earth’s surface for a geographic area stored in a digital file containing regularly spaced point locations with an elevation attribute. The United States Geological Survey (USGS) DEM is a specific data product that adheres to standards defined by the National Spatial Data Infrastructure. USGS DEMs can be downloaded for use with ArcGIS 3D Analyst.