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I'm working on an application to read the exif georeferenced metadata of some photos. I would like to know all the possible values of the attribute GPSMapDAtum. Do you know where to find a list with all the standard values?

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    Probably you should change the question, as it appears you don't want possible values, but rather likely or standard values – nmtoken Jul 10 '19 at 6:16
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It's maybe a little unclear, but from page 79 of the May 2019 revision of the EXIF spec, it looks like that can be an arbitrary string of any length:

GPSMapDatum tag description

It's also not required, only strongly recommended.

http://www.cipa.jp/std/documents/e/DC-008-Translation-2019-E.pdf

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  • Thank you for your answer. That documentation is what I had looked at. But the definition is too broad. – ElGerar Jul 10 '19 at 5:33
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    If the definition comes from the official specification how can you call it too broad? – user30184 Jul 17 '19 at 0:10
  • Because the number of possibilities is very high and it does not follow any standard nomenclature. You can find values like "WGS84" or "WGS-84" ... – ElGerar Aug 8 '19 at 12:09
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A good place to look would be the EPSG Geodetic Parameter Registry

A search by type (using GeodeticDatum) and area (using 'world') gives 34 results:

https://www.epsg-registry.org/report.htm?type=lastQuery&title=&reportDetail=short&style=urn:uuid:report-style:default-with-code&style_name=OGP%20Default%20With%20Code&title=Geodetic%20datums%20with%20global%20coverage&r=34

As for 'standard' values, my Garmin GPSMAP 64s offers me the following datums list:

  • Tristan Ast '68
  • Viti Levu 1916
  • Wake-Eniwetok
  • WGS 72
  • WGS 84
  • Zanderij
  • None
  • User
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  • Thank you very much for the information. What I'm really looking for is if there is a list of standard values. – ElGerar Jul 10 '19 at 5:37

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