Friday, July 15, 2011

26. DRG

Digital Raster Graphics (DRG) are scanned versions of U.S. Geological Survey topographical maps. The area within the neat line of the image is georeferenced so GIS information can be over-layed on the DRG image. This map is of a small portion of Austin, Texas. It shows several building outlines, property boundaries, roads, and rivers. This map could serve as a base for statistical data of the Austin area. 

No comments:

Post a Comment