You didn't, as far as I can tell, post the code that is not doing what you want. Or perhaps turn that code into a small test case program. People reading that would be able to be more helpful, and the code example could help others.
Proj 6.3 is quite old. I recommend you update to the latest release and the latest gridshift package before debugging further. I am not a gdal or proj maintainer, but I am packager for both, and often rant about NAD83 and WGS84 issues. In general, proj has a hard time dealing reasonably with WGS84 (which you aren't at the moment), and the transforms among the various NAD83 are complicated. I am not the least bit sure they are all in the epsg dataset. You should very likely be using projinfo, and also thinking about how you are conveying the area of applicability when setting up the transform. _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/gdal-dev
