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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.
Below is an example of a datum shift operation in WKT 2 format. Contrarily to an equivalent description in WKT 1 format, the WKT 2 description specifies the source and target coordinate reference systems, together with the domain of validity and the accuracy (in metres) that we can expect from this operation:
Well-known text (WKT) – A text markup language for representing feature geometry, developed by Open Geospatial Consortium; Well-known binary (WKB) – Binary version of well-known text, used in many spatial databases; SOSI – a spatial data format used for all public exchange of spatial data in Norway
EPSG Geodetic Parameter Dataset (also EPSG registry) is a public registry of geodetic datums, spatial reference systems, Earth ellipsoids, coordinate transformations and related units of measurement, originated by a member of the European Petroleum Survey Group (EPSG) in 1985.
WKT may refer to: Well-known text representation of coordinate reference systems, a text markup language for representing coordinate reference systems; Well-known text representation of geometry, a text markup language for representing vector geometry objects; WKT (sealant), a marine sealant; West Kowloon Terminus, a railway station in Hong Kong
Well-Known Text (WKT) is a name of format forged by OGC, not some general term for parenthesis-wrapped tagged lists of coordinates. The fact that some software handle degenerate form of format is no reason to display it in the article devoted to OGC Well-Known Text.
Simple Features (officially Simple Feature Access) is a set of standards that specify a common storage and access model of geographic features made of mostly two-dimensional geometries (point, line, polygon, multi-point, multi-line, etc.) used by geographic databases and geographic information systems.
A spatial reference system (SRS) or coordinate reference system (CRS) is a framework used to precisely measure locations on the surface of Earth as coordinates.It is thus the application of the abstract mathematics of coordinate systems and analytic geometry to geographic space.