Thanks Even and everybody else involved in this development. It is great news. Another step that makes PROJ a reference in the sector. And it is open source!
To the users that experience differences, this will be a good time to know/learn the different versions of NAD83... and use the right one ;) Good work! On Fri, 16 Dec 2022, 04:02 Even Rouault, <[email protected]> wrote: > Hi, > > I just wanted to point to https://github.com/OSGeo/PROJ/pull/3510 which > implements the NADCON5 transformations, with a corresponding pull > request to PROJ-data to add the grids as GeoTIFF files, for USA > geodetic datums NAD27 --> NAD83(86) --> NAD83(HARN) --> NAD83(FBN) --> > NAD83(NSRS2007) --> NAD83(2011). We can now reproduce exactly the > results of NGS tools, such as NCAT and their online REST API. > > This means that the transformations within the NAD83 family which used > to be mostly null transformations (except NAD83(86)->NAD83(HARN) where > we currently use the HPGN grids) are no longer null. This might change > results in your workflows once this is merged, but this is hopefully for > the good... > > Even > > -- > http://www.spatialys.com > My software is free, but my time generally not. > > _______________________________________________ > PROJ mailing list > [email protected] > https://lists.osgeo.org/mailman/listinfo/proj >
_______________________________________________ PROJ mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/proj
