EPSG Geodetic Parameter Dataset

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. Each entity is assigned an EPSG code between 1024 and 32767,[1][2] along with a standard machine-readable well-known text (WKT) representation. The dataset is maintained by the IOGP Geomatics Committee.[3]

Geodesy
Fundamentals
Concepts
Technologies
Standards (history)
NGVD 29 Sea Level Datum 1929
OSGB36 Ordnance Survey Great Britain 1936
SK-42 Systema Koordinat 1942 goda
ED50 European Datum 1950
SAD69 South American Datum 1969
GRS 80 Geodetic Reference System 1980
ISO 6709 Geographic point coord. 1983
NAD 83 North American Datum 1983
WGS 84 World Geodetic System 1984
NAVD 88 N. American Vertical Datum 1988
ETRS89 European Terrestrial Ref. Sys. 1989
GCJ-02 Chinese obfuscated datum 2002
Geo URI Internet link to a point 2010

Most geographic information systems (GIS) and GIS libraries use EPSG codes as Spatial Reference System Identifiers (SRIDs) and EPSG definition data for identifying coordinate reference systems, projections, and performing transformations between these systems, while some also support SRIDs issued by other organizations (such as Esri).

Common EPSG codes

History

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. However, the name of the EPSG registry was kept to avoid confusion.[6][7] Since then, the acronym "EPSG" became increasingly synonymous with the dataset or registry itself.[3]

See also

References
  1. Cain, Jim (9 May 2013). "Coordinate Reference Systems (Best Practices for Assignment, Manipulation and Conversion in GIS Systems)" (PDF). 2013 ESRI Petroleum GIS Conference: 39. Archived (PDF) from the original on 23 October 2021. Retrieved 3 October 2019.
  2. "Policies and procedures for EPSG Dataset data management". EPSG. IOGP. December 2022. p. 18. Retrieved 5 May 2023. Codes for primary entity types are within the range 1024 to 32766 inclusive
  3. "IOGP Geomatics Committee (poster)" (PDF). Archived from the original (PDF) on 2019-10-03. Retrieved 2019-10-03.
  4. "International Terrestrial Reference Frame 2014 (ITRF2014)". Quality Positioning Services B.V. Retrieved 3 October 2019.
  5. de Marolles, Lodoïs (14 October 2022). "EPSG dataset presentation" (PDF). Institut Géographique National (France). Archived (PDF) from the original on 11 January 2023. Retrieved 11 January 2023.
  6. "Using the EPSG Geodetic Parameter Dataset" (PDF). IOGP Geomatics Committee. August 2012. Archived from the original (PDF) on 2019-12-31.
  7. Giudici, Michael (28 August 2019). "GDA2020 and overcoming the 'Web Mercator Dilemma'". Spatial Source. Archived from the original on 2019-10-10. Retrieved 2019-10-03.
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