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Further information: "SRID

The CRS identifier begins with "CRS". There are three styles:

  1. When a registry provides online resolver, CRS<url>
  2. When a registry is offline, CRSregistry:crsid
  3. When the data creator provides full definition of CRS using ISO 19111, CRS<CRSID>

The example of original Annex H always use "CRSWGS_84".



  1. ^ "ISO 6709:2008/Cor 1:2009 -". ISO. Retrieved 8 June 2016. 
  2. ^ Probably the intention is that the locale environment should not be overridden.
  3. ^ This is different from SI style guides
  4. ^ Height without CRS identifier was allowed in the first edition, but not today. Ending with longitude is still allowed.
  5. ^ Annex H allows letters N and S as sign characters, but gives no examples.
  6. ^ Annex H allows letters E and W as sign characters, but gives no examples.
  7. ^ a b c d "ISO 6709:2008(en) preview". www.iso.org. ISO. Retrieved 8 June 2016. 
  8. ^ a b c d "United Nations - "International Civil Aviation Organization. "Annex 4: Aeronautical Charts - Chapter 1 (Definitions, Applicability and Availbility)" (PDF).  Note: Annex 4 is one of the (currently) 19 annexes to the "Chicago Convention on International Civil Aviation (ICAO Doc. 7300).
  9. ^ This is different from the 1983 edition.

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