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From "Martin Desruisseaux (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SIS-204) Enforce CompoundCRS restrictions
Date Thu, 02 Jul 2015 17:26:04 GMT
Martin Desruisseaux created SIS-204:
---------------------------------------

             Summary: Enforce CompoundCRS restrictions
                 Key: SIS-204
                 URL: https://issues.apache.org/jira/browse/SIS-204
             Project: Spatial Information Systems
          Issue Type: Sub-task
          Components: Referencing
    Affects Versions: 0.5, 0.4, 0.6
            Reporter: Martin Desruisseaux
            Priority: Minor


ISO 19162 restricts compound CRS to the following components in that order:

* A mandatory horizontal CRS (only one of two-dimensional {{GeographicCRS}} or {{ProjectedCRS}}
or {{EngineeringCRS}})
* Optionally followed by a {{VerticalCRS}} or a {{ParametricCRS}} (but not both).
* Optionally followed by a {{TemporalCRS}}.

SIS currently does not enforce those restrictions. In particular:

* Components may appear in different order.
* {{VerticalCRS}} + {{TemporalCRS}} (without horizontal component) is accepted.
* {{GeocentricCRS}} or three-dimensional {{GeographicCRS}} can be combined with {{TemporalCRS}}.

We should nevertheless perform a check and raise a flag if the CRS does not meet WKT restrictions,
even if we still format it.




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