GIS Chapter 5

A branch of geometry that provides the methods for creating geospatial data of points, lines, and polygons from survey data.

Conversion of geospatial data from one format to another.

A method that uses data from a base station to correct noise errors in GPS data.

Digital representations of point, line, and area features from USGS quadrangle maps including contour lines, spot elevations, hydrography, boundaries, transportation, and the U.S. public Land Survey System.

The process of converting data from analog to digital format.

A table with a built-in electronic mesh that can sense the position of the cursor and can transmit its x-, y-coordinates to the connected computer.

The use of a translator or algroithm in a GIS package to directly convert geospatial data from one format to another.

A U.S. multiagency committee that coordinates the development of geospatial data standards.

Data that many orgaizations regularly use for GIS activities.

A prtal established by the Federal Office of Management and Budget for accessing geospatial data.

Longitude, latitude, and elevation data for point locations made available through a navigational satellite system and a receiver.

Data that provides information about geospatial data.

A USGS program that uses a seamless system for delivering 1:24,000 scale DEMs (1:63,360 scale DEMs for Alaska).

Land use/land cover data compiled from the Thematic Mapper imagery of the early 1990s for the conterminous U.S.

Land use/land cover data compiled from the Landsat 7 ETM+ imagery for all 50 states of the U.S. and Puerto Rico.