[Proj] NTv1 (redux)

Frank Warmerdam warmerdam at pobox.com
Sat Jun 6 10:28:15 EST 2009

Gerald I. Evenden wrote:
> Before putting this subject to rest:
> Is anyone still using the NTv1 format?
> I saw that Frank had put it into pj_gridinfo.c and, from logfile, looks like 
> an addition shortly after file creation in '03.
> Based upon Google searching, it looks like a dead issue compared to NTv2.


I still use the NTv1 files by default in Canada because they are freely
redistributable while the NTv2 files in Canada have various strings
attached (as I recall).

Best regards,
I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | Geospatial Programmer for Rent

More information about the Proj mailing list