Geographic information systems
Couclelis, Helen Department of Geography, University of California, Santa Barbara, California.
- Conceptual and scientific issues
- Additional Readings
Computer-based technologies for the storage, manipulation, and analysis of geographically referenced information. Attribute information and spatial information are integrated in geographic information systems (GIS) through the notion of a data layer, which is realized in two basic data models—raster and vector (Fig. 1). The major categories of applications comprise urban and environmental inventory and management, policy decision support, and planning; public utility and business (including agribusiness) applications, engineering, and defense applications; and scientific analysis and modeling.
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