Geographic Information Systems
Published Online: 14 DEC 2007
Copyright © 2007 by John Wiley & Sons, Inc.
Wiley Encyclopedia of Computer Science and Engineering
How to Cite
Ramirez, J. R. 2007. Geographic Information Systems. Wiley Encyclopedia of Computer Science and Engineering. .
- Published Online: 14 DEC 2007
A geographic imformation system (GIS) is a set of computer-based tools to collect, store, retrieve, manipulate, visualize, and analyze geo-spatial information (information identified by its location on the surface of reference, for example, the Earth). This article describes the major components of a GIS (hardware and software) with emphasis in the central processing units and peripheral device and major software components: collection, storage, retrieval, manipulation, query and analyze, and visualization. This discussion is followed by a discussion of applications in several fields using a set of examples to illustrate these topics. Then, the concept and implications of quality in GIS (spatial data quality, quality on embedded and external models) is discussed. Finally, some comments are presented over the future of GIS.
- computer applications;
- geo-spatial data processing;
- query and analysis of geo-spatial data;
- visualization of geo-spatial data