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  2. List of GIS data sources - Wikipedia

    en.wikipedia.org/wiki/List_of_GIS_data_sources

    geodata.gov.gr: geodata.gov.gr is designed, developed and maintained by the Institute of Information Systems of the Research Center "Athena" to serve as a central collection point, search, distribution and display of open public geospatial information. American School of Classical Studies at Athens, Corinth Excavations

  3. Geodatabase (Esri) - Wikipedia

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

    The origin of the geodatabase was in the mid-1990s during the emergence of the first spatial databases.One early approach to integrating relational databases and GIS was the use of server middleware, a third-party program that stores the spatial data in database tables in a custom format, and translates it dynamically into a logical model that can be understood by the client software.

  4. Geographic data and information - Wikipedia

    en.wikipedia.org/wiki/Geographic_data_and...

    There are also many different types of geodata, including vector files, raster files, geographic databases, web files, and multi-temporal data. Spatial data or spatial information is broader class of data whose geometry is relevant but it is not necessarily georeferenced, such as in computer-aided design (CAD), see geometric modeling.

  5. Wikipedia : Graphics Lab/Resources/GIS sources and palettes

    en.wikipedia.org/wiki/Wikipedia:Graphics_Lab/...

    Shapefiles : are a data exchange format created by ESRI and one of the most widely used GIS/geodata formats. One "shapefile" usually include four different files : .shp, .shx, .dbf, .prj. First three files must all be present in order to use the data. Each shapefile can hold only one geometry type.

  6. XOMGL - Wikipedia

    en.wikipedia.org/wiki/XOMGL

    XOMGL (eXtensible Open Municipal Geodata Language) is an XML-based open standard for the exchange of large amounts of government data between a municipal agency and regular citizens and developers creating web-based mapping applications.

  7. List of national mapping agencies - Wikipedia

    en.wikipedia.org/wiki/List_of_national_mapping...

    Danish Geodata Agency: gst.dk: including Faroe Islands and Greenland: Dominican Republic: Instituto Geográfico Nacional José Joaquín Hungría Morell: ign.gob.do: Ecuador: Instituto Geográfico Militar (IGM) igm.gob.ec: Geoportal IGM: Egypt: Egyptian general Survey Authority (ESA) esa.gov.eg Archived 2016-05-31 at the Wayback Machine

  8. GIS file format - Wikipedia

    en.wikipedia.org/wiki/GIS_file_format

    Because a grid is a sample of a continuous space, raster data is most commonly used to represent geographic fields, in which a property varies continuously or discretely over space. Common examples include remote sensing imagery, terrain/elevation , population density , weather and climate , soil properties , and many others.

  9. Wikipedia:Obtaining geographic coordinates - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Obtaining...

    Name search: Has geographic coordinates for airports, heliports, and other facilities which have an IATA or ICAO code. You can also search by location name. Plexscape WS: Google Maps tool – Coordinate converter: Online application to acquire coordinates for any place on Earth. Supports more than 3,000 coordinate systems and 400 datums worldwide.

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