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- A datum is a reference point or system that is used to locate or measure other points or systems1234. A datum can be based on geodetic, geometric, or physical features of the earth or space123. A datum can have a regional or global scope, and can be updated over time123. Examples of datums are1234:
- Geodetic 1949 datum used in New Zealand
- WGS-84 datum used globally by GPS
- NAD83 datum used in North America
- OSGB36 datum used in Great Britain
- ITRF datum used for the International Terrestrial Reference frame
Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.An example is the Geodetic 1949 datum that has been used in New Zealand. Another example, familiar to GPS users, is the WGS-84 datum. WGS-84 is an example of a datum that is used globally.www.maptoaster.com/maptoaster-topo-nz/articles/…Examples of map datums are: WGS 84, 72, 66 and 60 of the World Geodetic System. NAD83, the North American Datum which is very similar to WGS 84. NAD27, the older North American Datum, of which NAD83 was basically a readjustment [1] OSGB36 of the Ordnance Survey of Great Britain.
en.wikipedia.org/wiki/Geodetic_datumFor datums this is usually a regional/functional description and a date for when it was last up–dated - for example:
- the Australian Geodetic Datum which was created in 1966 and updated in1984 is variably described as AGD66, AGD84 or just AGD
www.icsm.gov.au/education/fundamentals-mappin…There are abstract vertical and horizontal lines on the globe that divide and distribute the region based on the coordinate system. The live and perfect example of a Datum working in the Geographic Information system would be Google Earth.www.educba.com/what-is-datum/ - People also ask
2.3: Datums, Coordinate Systems, and Map Projections
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