# [Proj] Specify a different directory for gsb files

Eric Miller EMiller at dfg.ca.gov
Tue Aug 28 14:44:00 EDT 2007

```Set the environment variable PROJ_LIB to the path where you're putting the GSB files.

>>> On 8/28/2007 at 11:18 AM, "Ervin Oswaldo Escobar Salazar"
<ervinoswaldoescobar at gmail.com> wrote:
> Does any know how can i specify a different than the default folder
> (c:\proj\nad) in order to cs2cs takes the gsb files when using NTV2 datum
> shifting method?
> I have been testing with the NTV2 datum shifting method and it works ok when
> I put my national specific .gsb file under the default c:\proj\nad folder
> (as you can see, i am under windows platform). However, I need to change the
> default folder for the datum files because I have no permission to write on
> c:\proj. When i put the .gsb file in a diferent folder, the NTV2
> transformation is not done.
> Do i need to recompile again? In that case, which file or files should i
> edit and how?