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createOperations: make it work when transforming from/to a CompoundCRS with a DerivedVerticalCRS with ellipsoidal height #4176

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merged 1 commit into from
Jun 19, 2024

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@rouault rouault commented Jun 18, 2024

Such CompoundCRS is strictly speaking not OGC Topic 2 conformant, but can make sense from a practical point of view.

Fixes #4175

@rouault rouault added this to the 9.5.0 milestone Jun 18, 2024
…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
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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").

@rouault rouault merged commit 36815b4 into OSGeo:master Jun 19, 2024
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Wrong transformation from vertical with geoid model to "vertical offset"
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