[postgis-users] transformation discrepancy with postgis v. cs2cs

[Mike Toews]

On 25 March 2010 14:28, Bryan Keith <bryan at ideotrope.org> wrote:
> Hmmm, for my original post I did the cs2cs check on a different machine.
> When I run the cs2cs transformation on the machine that's running postgis,
> then I get the same result that postgis returns.  Does this mean that
> cs2cs isn't finding the grid shift files either?  Or does it mean that
> it's using the wrong grid shift files?  Or?
>
> Bryan

Something is definitely strange with the PROJ.4 installation on that
one system. If I had to guess, you compiled PROJ.4 yourself, but
didn't unzip the gridshift files in the nad folder before ./configure
? It should be apparent that the grid shift files are installed with
the make install command.

Try reinstalling the PROJ.4 library with the gridshift files intact,
and it should affect both PostGIS and cs2cs (since they use the same
system library).

-Mike