Does the CD contain digital topo maps?
Yes and no. The CD contains indexes of U.S. Geological Survey 1:24,000, 1:100,000, and 1:250,000-scale topographic quadrangles. It does not contain the actual digital topographic maps, but it does contain most of the data used to make 1:100,000-scale topographic maps. (Note the USGS 7.5-minute quadrangle maps are 1:24,000 scale, and show more detail than the 1:100,000-scale maps used here.) In GIS a map is a combination of spatial data (lines, points, polygons) and map symbology (line types, symbols, colors, text). The Digital Atlas of Oklahoma contains the roads, streams, contours, public land survey, county boundaries, and geographic names that are on the 1:100,000-scale USGS topographic maps, but the screen display colors and symbols may not look exactly like the paper map.
Related Questions
- I have a copy of CD 2000-03, Digital Images of Official Maps of Alquist-Priolo Earthquake Fault Zones of California, Southern Region. Can I print copies of the maps?
- I know that scanned images can be used to work on maps in computer programs. Do the digital data sets contain scanned images of the geologic quadrangle maps?
- How many maps are on each CD? How many CDs does it take to cover a state?
