Digital Raster Graphics (DRGs) for Poughkeepsie, NY (usgs quad poughkeepsie.tif)
U.S. Geological Survey EROS Data Center. 1996. Digital Raster Graphics (DRGs) for Poughkeepsie, NY (usgs quad poughkeepsie.tif). U.S. Geological Survey EROS Data Center
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). When the DRG is combined with other digital products, such as digital orthophoto quadrangles (DOQ) or digital elevation models (DEM), the resulting image provides additional visual information for the extract- ion and revision of base cartographic information. The USGS is producing DRG's of the 1:24,000-,1:24,000/1:25,000-, 1:63,360- (Alaska), 1:100,000-, and 1:250,000-scale topographic map series.
- Type
- Geospatial Dataset
- Authors
- U.S. Geological Survey EROS Data Center
- Date of Issue
- 1996
- Publisher
- U.S. Geological Survey EROS Data Center
- Units
- ROVA
- Keywords
- Aerial Photograph, Contour Line, DEM, Digital Contours, Digital Elevation Model, Digital Image, Digital Image Map, Digital Line Graph, Digital Orthophoto, digital orthophotoquad, digital terrain model, DOQ, Hyde Park, Hydrography, Map, New York, paper map, raster, Roosevelt-Vanderbilt NHS, ROVA, scanner, Topographic, Transportation, true ground conditions, U.S. Public Land Survey System, Universal Transverse Mercator (UTM)