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Well-known text representation of coordinate reference systems (WKT or WKT-CRS) is a text markup language for representing spatial reference systems and transformations between spatial reference systems. The formats were originally defined by the Open Geospatial Consortium (OGC) and described in their Simple Feature Access [1] and Well-known ...
Well-known text (WKT) is a text markup language for representing vector geometry objects. A binary equivalent, known as well-known binary (WKB), is used to transfer and store the same information in a more compact form convenient for computer processing but that is not human-readable. The formats were originally defined by the Open Geospatial ...
Web Mercator, Google Web Mercator, Spherical Mercator, WGS 84 Web Mercator[1] or WGS 84/Pseudo-Mercator is a variant of the Mercator map projection and is the de facto standard for Web mapping applications. It rose to prominence when Google Maps adopted it in 2005. [2] It is used by virtually all major online map providers, including Google ...
OpenStreetMap (abbreviated 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 photo imagery or satellite imagery, and also import from other freely licensed geodata sources.
TomTom, OpenStreetMap, Intermap, Pictometry International, NASA, Blom, Ordnance Survey, [12] SK Planet TomTom, OpenStreetMap, and others: Seznam.cz, OpenStreetMap and others: User contributions, open data and data donations HERE: TomTom, and others Archived 2013-05-15 at the Wayback Machine: user contributions, NAVTEQ and others [13] Directory ...
The dataset was created in 1985 by Jean-Patrick Girbig of Elf, to "standardize, improve and share spatial data between members of the European Petroleum Survey Group". [5] It was made public in 1993. [6] In 2005, the EPSG organisation was merged into International Association of Oil & Gas Producers (IOGP), and became the Geomatics Committee ...
Align the map to the area you want to edit. Click 'Edit' by the website banner. Now you should see the 'Add Feature' options at the top, with buttons for 'Point', 'Line', and 'Area'. Click 'Area'. You can now start to form a shape, clicking on each corner, adjusting the edges of the shape as needed.
GeoSPARQL is a model for representing and querying geospatial linked data for the Semantic Web.It is standardized by the Open Geospatial Consortium as OGC GeoSPARQL. [1] The definition of a small ontology based on well-understood OGC standards is intended to provide a standardized exchange basis for geospatial RDF data which can support both qualitative and quantitative spatial reasoning and ...