Hello all, If I understand correctly, one component of the transformation from ETRS89 to HD72/EOV involves a grid-based correction as part of the HD72/EOV projection system. I believe the following OSGeo datumgrid update is related to this transformation:
https://github.com/OSGeo/proj-datumgrid/pull/97 In the past, my company has tried performed this transformation using GDAL, but it appeared to rely on the less precise Helmert transformation. Because of this we've been using other methods. Now, the OSGeo ticket above shows how to construct a Proj string that uses the grid-based method instead. So, that might be a method of implementing this using Proj. But as we've recently upgraded to GDAL 3.10, I was wondering: If the appropriate grid files are available, will GDAL now automatically use them to perform the ETRS89 -> HD72/EOV transformation? Or is this still not supported? Or has it always been supported and we just didn't setup GDAL correctly? -- David Klaus Carlson Software Disclaimer The information contained in this communication from the sender is confidential. It is intended solely for use by the recipient and others authorized to receive it. If you are not the recipient, you are hereby notified that any disclosure, copying, distribution or taking action in relation of the contents of this information is strictly prohibited and may be unlawful.
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