Even Rouault <[email protected]> writes: > 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...
Wow, this is amazing to see. I think it is definitely for the good!
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