createOperations: make it work when transforming from/to a CompoundCRS with a DerivedVerticalCRS with ellipsoidal height #4176
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…S with a DerivedVerticalCRS with ellipsoidal height Such CompoundCRS is strictly speaking not OGC Topic 2 conformant, but can make sense from a practical point of view. Fixes OSGeo#4175
jjimenezshaw
approved these changes
Jun 19, 2024
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Thanks @rouault
I know that the "ellipsoidal vertical systems" are not in the standard. I got the idea from the 3D systems as wkt1 with the option --allow-ellipsoidal-height-as-vertical-crs.
With a derived vertical CRS a geoid model can be "simulated" locally (with "vertical offset" or "vertical offset and slope").
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Such CompoundCRS is strictly speaking not OGC Topic 2 conformant, but can make sense from a practical point of view.
Fixes #4175