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USGS · fs07099

Digital raster graphics

Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
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Abstract

A digital raster graphic (DRG) is a scanned image of a U.S. Geological Survey (USGS) topographic map. The scanned image includes all map collar information. The image inside the map neatline is georeferenced to the surface of the Earth. The DRG can be used to collect, review, and revise other digital data, especially digital line graphs (DLG).

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Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey. 1999. Digital raster graphics. https://doi.org/10.3133/fs07099

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