Even, Thank you for the input. You don't happen to know where I can find documentation on these NADCON5 related changes?
On Mon, Jul 15, 2024 at 12:30 PM Even Rouault <even.roua...@spatialys.com> wrote: > Support for US datum transformations has been vastly improved in PROJ > 9.2.0 with NADCON5 grid based transformations > Le 15/07/2024 à 17:46, David Klaus via gdal-dev a écrit : > > Greg, > > Thank you for that information. I will post my example code shortly. > Hopefully there is an obvious mistake in my code that is not related to > Proj4 or GDAL version, > > On Mon, Jul 15, 2024 at 11:40 AM Greg Troxel <g...@lexort.com> wrote: > >> David Klaus <dkl...@carlsonsw.com> writes: >> >> > As far as upgrading Proj4; because we build Proj4 statically in our >> custom >> > build, it's not a trivial task to upgrade versions. Also, I think there >> > might be compatibility reasons why we've stuck with 6.3.1 up until now. >> > >> > But if NAD83 realization transformation functionality has been expanded >> and >> > improved in later versions, it might be worth it for us to upgrade. I >> was >> > wondering, judging by the contents of the proj-datumgrid packages I've >> > found online, it looks like Proj4 did not support any NAD83 realization >> > transformations besides 1986->HARN before at least Proj4 7.0. >> >> I maintain an unrelated (not geo) software package, and there my >> practice is not to engage in debugging old versions. It takes a lot of >> time and in the cases the problem has been resolved already, it is >> entirely not useful (to the project). >> >> I am not saying NAD83 is better specifically if you udpate. I really >> don't know. >> >> > > -- > 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. > > _______________________________________________ > gdal-dev mailing > listgdal-dev@lists.osgeo.orghttps://lists.osgeo.org/mailman/listinfo/gdal-dev > <https://lists.osgeo.org/mailman/listinfo/gdal-dev> > > -- http://www.spatialys.com <http://www.spatialys.com> > My software is free, but my time generally not. > > -- 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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