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  2. OpenStreetMap - Wikipedia

    en.wikipedia.org/wiki/OpenStreetMap

    OpenStreetMap ( OSM) is a free, open geographic database updated and maintained by a community of volunteers via open collaboration. Contributors collect data from surveys, trace from aerial imagery and also import from other freely licensed geodata sources. OpenStreetMap is freely licensed under the Open Database License and as a result ...

  3. List of GIS data sources - Wikipedia

    en.wikipedia.org/wiki/List_of_GIS_data_sources

    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.

  4. Restrictions on geographic data in China - Wikipedia

    en.wikipedia.org/wiki/Restrictions_on_geographic...

    Under Chinese law, the use of geographic information in the People's Republic of China is restricted to entities that have special authorization from the administrative department for surveying and mapping under the State Council. [1] Consequences of the restriction include fines for unauthorized surveys, lack of geotagging information on many ...

  5. Spatial database - Wikipedia

    en.wikipedia.org/wiki/Spatial_database

    Geographic database (or geodatabase) is a georeferenced spatial database, used for storing and manipulating geographic data (or geodata, i.e., data associated with a location on Earth), especially in geographic information systems (GIS). Almost all current relational and object-relational database management systems now have spatial extensions ...

  6. OpenStreetMap Foundation - Wikipedia

    en.wikipedia.org/wiki/OpenStreetMap_Foundation

    OpenStreetMap Foundation. / 52.55098; -1.81860. The OpenStreetMap Foundation (abbreviated OSMF) is a non-profit foundation whose aim is to support and enable the development of freely-reusable geospatial data. Founded in 2006, it is closely connected with the OpenStreetMap project, although its constitution does not prevent it supporting other ...

  7. Template:Cite OpenStreetMap - Wikipedia

    en.wikipedia.org/wiki/Template:Cite_OpenStreetMap

    Template. : Cite OpenStreetMap. This template is used for referencing maps published by OpenStreetMap through their mapping service, and this template is based on { { cite map }} so it falls into the Citation Style 1 (CS1) series of templates, although it can be set to emulate CS2 style. Note: OpenStreetMap is an open wiki that relies on the ...

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