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 Geographic information systems (GIS) technology can be used for scientific investigations, resource management, and development planning. For example, a GIS might allow emergency planners to easily calculate emergency response times in the event of a natural disaster, or a GIS might be used to find wetlands that need protection from pollution. In the strictest sense, a GIS is a computer system capable of assembling, storing, manipulating, and displaying geographically referenced information , i.e. data identified according to their locations. Practitioners also regard the total GIS as including operating personnel and the data that go into the system. |
- How does a GIS work?
- Relating information from different sources
- Data capture
- Data integration
- Projection and registration
- Data structures
- Data modeling
- What's special about a GIS?
- The way maps and other data have been stored or filed as layers of information in a GIS makes it possible to perform complex analyses.
- Information retrieval
- Topological modeling
- Networks
- Overlay
- Data output
- Applications of GIS
- Mapmaking
- Site selection
- Emergency response planning
- Simulating environmental effects
- Graphic display techniques
