ER wrote:

>The null transformation between ETRS89 and ETRF2014 comes with the definition of the datum ensemble ETRS89 (cf change https://github.com/OSGeo/PROJ/issues/3263 <https://github.com/OSGeo/PROJ/issues/3263>)

The problem is not the null transformation between the ensemble and its members, but that the transformation route through ETRF2014 is recommended. In my opinion, the route trough ETRF2000 should be the default. Not only for the Netherlands but, for Europe in general.

PROJ has no idea of what is recommended/preferred by European geodestists ;-) It only trusts records in its database.

Thus ETRS89 -> ETRF2000 -> ITRF2000 -> ITRF2014 instead of ETRS89 -> ETRF2014 -> ITRF2014. What makes PROJ choose the latter?

PROJ can only infer pipelines with at most one intermediate CRS. If you want ETRS89 -> ETRF2000 -> ITRF2000 -> ITRF2014, you need an explicit concatenated operation chaining the 3 individual steps.

Even


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