GIS terms starting with U

9 terms

1. U.S. National Map Accuracy Standards (USNMAS) Accuracy standards for published maps in English units defining measurements for horizontal and vertical accuracy.
2. undershoot An arc that does not extend far enough to intersect another arc. See also dangling arc.
3. Union An organization of workers formed for the purpose of collective bargaining.
4. United States Federal Geographic Data Committee (FGDC) Composed of representatives of several federal agencies and GIS vendors, the FGDC has the lead role in defining spatial metadata standards, which it…
5. universe polygon The first record in a polygon attribute table. It represents the area beyond the outer boundary of the coverage.
6. upstream The region extending in a 5' direction from a gene.
7. user ID A file assigned to every user and server that uniquely identifies them to IBM® Lotus® Notes® and IBM® Lotus® Domino™.
8. USGS Digital Elevation Model (DEM) A digital elevation model produced by the Survey Branch of the United States Department of the Interior, consisting of a regular array of elevations…
9. Utility and Communication Energy, water and waste systems, and communications infrastructure and services.