[Proj] grid tool

Paul Kelly paul-grass at stjohnspoint.co.uk
Sat Nov 18 11:55:49 EST 2006

On Sat, 18 Nov 2006, cp wrote:

> Does it exists a tool that makes a conversion from a binary NTv1, NTv2 or
> CTABLE format to an ascii format ?

I have used GDAit for this (NTv2 <--> ASCII) successfully several times:

> If not, does it exists some documentation about these formats ?

See appendices to the GDAit Users Manual at the above site, also some of 
my notes on getting it working with PROJ.4 here:

Good luck,


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