Sunday, July 22, 2012

DRG - Digital raster map

https://www.e-education.psu.edu/natureofgeoinfo/c6_p6.html

Digital Raster Maps are scanned image of paper USGS maps of the topography creating a digital image on a computer usually in a TIFF. format. They are usually used as backdropped images for other digital maps. This is  digital scan of a partial USGS image of Bushkill, PA.

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