Monday, November 21, 2011

Digital Raster Graphics (DRG) Map



This is a DRG Map of a portion of Bushkill, PA. A Digital Raster Graphic Map is a scanned image of a standard series topographic map. The image inside is geo referenced to the surface of the earth.

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

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