[GRASS-dev] nad grids storage

[Markus Neteler]

On Sun, Aug 18, 2013 at 10:55 AM, Vincent Bain <bain at toraval.fr> wrote:
> Dear grass devs and users,
> sorry for digging up this pretty old topic. It was about the end of my
> initial message, see bellow (perhaps should I have opened a ticket for
> it)

Yes, perhaps that's needed.

> The question was : is it possible to add the french nad grid to grids
> provided by default in grass directories ?
> Everytime I completely rebuild grass (after a make distclean) I have to
> manually copy the ntf_r93.gsb file
> into /usr/local/grass-XX.svn/etc/proj/nad/

The file comes with PROJ.4 - on my Fedora box here:

/usr/share/proj/ntf_r93.gsb

We should figure out why it isn't used in your case.

I observe that we still have the unsolved issue of using our "private"
copy of these files:

[neteler at oboe proj]$ ls -la WO*
-rw-r--r--. 1 neteler gis 14111 Nov 25  2008 WO.lla

[neteler at oboe proj]$ ls -la /usr/share/proj/WO*
-rw-r--r--. 1 root root 11112 Feb 17 18:27 /usr/share/proj/WO

[neteler at oboe proj]$ file WO*
WO.lla: ASCII text

[neteler at oboe proj]$ file /usr/share/proj/WO*
/usr/share/proj/WO: data

... but with the date of 2008 and no more updates since then. I
remember discussions about this some years ago.

Due to changes in PROJ.4 we could no longer simply copy over the files.
Now, it is time to revisit the mechanism and get rid of these copied
files in favour of using those from PROJ.4.

Thoughts?

Markus