What are digitally vectorized geologic quadrangle maps (DVGQs), and how do they differ from scanned images?
The citizens of Kentucky are fortunate that the entire state is mapped geologically at the detailed scale of 1:24,000. The 707 paper maps were first published in cooperation with the U.S. Geological Survey as part of the GQ series. The same maps will now be available in two computerized formats. The first format is scanned, georeferenced images of the original paper maps. These data are exact facsimiles of the GQ maps, and because they are georeferenced, they can be compared to other spatially referenced data from KGS or other sources. The scanned images cannot be edited or queried in the same way that a vectorized database can, however. They can be downloaded at no cost from the Kentucky Infrastructure Authoritys Web site (kymartian.state.ky.us/gqmaps/). The second computerized format is digitally vectorized geologic quadrangles (or DVGQs). The DVGQs are databases of geologic information adapted from the original geologic maps. The data sets represent geologic features as vector point
Related Questions
- 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?
- What are digitally vectorized geologic quadrangle maps (DVGQs), and how do they differ from scanned images?
- HOW DO GEOLOGIC MAPS DIFFER FROM OTHER MAPS?
