Geographic Information System

geographic information system (GIS) is a system designed to capture, store, manipulate, analyze, manage, and present spatial or geographic data. It is a computer-based tool that analyzes stores, manipulates and visualizes geographic information, usually in a map. GIS can refer to a number of different technologies, processes, and methods. It is attached to many operations and has many applications related to engineering, planning, management, transport/logistics, insurance, telecommunications, and business. For that reason, GIS and location intelligence applications can be the foundation for many location-enabled services that rely on analysis and visualization. GIS can relate unrelated information by using location as the key index variable. Locations or extents in the Earth space–time may be recorded as dates/times of occurrence, and x, y, and z coordinates representing, longitude, latitude, and elevation, respectively. All Earth-based spatial–temporal location and extent references should be relatable to one another and ultimately to a "real" physical location or extent.

  • Coordinate geometry
  • Geometric networks
  • Spatial analysis
  • Satellite imagery
  • World geodetic system
  • Global positioning system

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