[Proj] NTv2 info
francesco.pirotti at unipd.it
Wed Jun 3 04:48:49 EST 2009
Hello, a year ago I looked into the NTv2 format in order to convert the
Italian grids of corrections into such format. I tried it out with
Mapserver and GvSIG and it worked well. I did a windows executable in C
to read information in italian .gr files and convert them into the
binary format of NTv2. I believe I still have the documentation pdf ; I
used the Australian software "user guide" and "software documentation"
(GDAit), and a link in internet which I downloaded but I cannot find the
original link address... the title is: "Creation of NTv2 Grid File for
French NTF -- RGF93 Datum Conversions.htm".
If you need I am glad to help. I remember I had a bit of trouble with
unusual reference frame, but it just needs a little sorting.
Paul Kelly ha scritto:
> See the below link for an account of my own naive experimentations with
> the NTv2 format a few years ago - perhaps not of great interest though as
> I too could not find any adequate documentation for the binary version of
> the file and indeed used some Windows software (Australian) to create a
> binary version from the ASCII.
> Link: <http://www.stjohnspoint.co.uk/gis/france.htm>
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