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  2. List of GIS data sources - Wikipedia

    en.wikipedia.org/wiki/List_of_GIS_data_sources

    This is a list of GIS data sources (including some geoportals) that provide information sets that can be used in geographic information systems (GIS) and spatial databases for purposes of geospatial analysis and cartographic mapping. This list categorizes the sources of interest.

  3. Data model (GIS) - Wikipedia

    en.wikipedia.org/wiki/Data_model_(GIS)

    Because the world is much more complex than can be represented in a computer, all geospatial data are incomplete approximations of the world. [9] Thus, most geospatial data models encode some form of strategy for collecting a finite sample of an often infinite domain, and a structure to organize the sample in such a way as to enable interpolation of the nature of the unsampled portion.

  4. Geographic information system - Wikipedia

    en.wikipedia.org/wiki/Geographic_Information_System

    GIS data acquisition includes several methods for gathering spatial data into a GIS database, which can be grouped into three categories: primary data capture, the direct measurement phenomena in the field (e.g., remote sensing, the global positioning system); secondary data capture, the extraction of information from existing sources that are ...

  5. Geographic information system software - Wikipedia

    en.wikipedia.org/wiki/Geographic_information...

    A GIS software program is a computer program to support the use of a geographic information system, providing the ability to create, store, manage, query, analyze, and visualize geographic data, that is, data representing phenomena for which location is important.

  6. Geographic data and information - Wikipedia

    en.wikipedia.org/.../Geographic_data_and_information

    [1] [2] It is also called geospatial data and information, [citation needed] georeferenced data and information, [citation needed] as well as geodata and geoinformation. [ citation needed ] Location information (known by the many names mentioned here) is stored in a geographic information system (GIS).

  7. Geoportal - Wikipedia

    en.wikipedia.org/wiki/Geoportal

    A geoportal is a type of web portal used to find and access geographic information (geospatial information) and associated geographic services (display, editing, analysis, etc.) via the Internet. Geoportals are important for effective use of geographic information systems (GIS) and a key element of a spatial data infrastructure (SDI).

  8. Geodatabase (Esri) - Wikipedia

    en.wikipedia.org/wiki/Geodatabase_(Esri)

    A Geodatabase is a proprietary GIS file format developed in the late 1990s by Esri (a GIS software vendor) to represent, store, and organize spatial datasets within a geographic information system. [ 1 ] [ 2 ] A geodatabase is both a logical data model and the physical implementation of that logical model in several proprietary file formats ...

  9. GIS in geospatial intelligence - Wikipedia

    en.wikipedia.org/wiki/GIS_in_geospatial_intelligence

    Geographic information systems (GIS) play a constantly evolving role in geospatial intelligence (GEOINT) and United States national security.These technologies allow a user to efficiently manage, analyze, and produce geospatial data, to combine GEOINT with other forms of intelligence collection, and to perform highly developed analysis and visual production of geospatial data.

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