Geographic Information System (Geographic Information System or Geo-Information system, GIS) is sometimes called "Geological Information System ". It is a special and very important spatial information system. It is a technical system that collects, stores, manages, calculates, analyzes, displays, and describes geographic distribution data on all or part of the Earth's surface (including the atmosphere) with the support of computer hardware and software systems.

Expanded Information:

p>Geographic information, as a special kind of information, is equally derived from geographic data. Geographic data is a symbolic representation of the relationship between various geographic features and phenomena, and refers to the sum of numbers, text, images, etc. that characterize the quantity, quality, distribution characteristics and patterns of elements in the geographic environment. Geographic data mainly includes three parts: spatial location data, attribute feature data and time domain feature data. Spatial location data describes the location of the geographic object, this location includes both the absolute location of geographic elements (such as geodetic latitude and longitude coordinates), but also includes the relative location of geographic elements (such as spatial neighboring, containment, etc.).

Baidu Encyclopedia-GIS

Baidu Encyclopedia-Geographic Location