problem installing user defined Extensions

[Arlindo da Silva]

On Tue, Sep 9, 2008 at 12:21 PM, Steve Herbener <
sherbener at atmos.colostate.edu> wrote:

> Hi Arlindo,
>
> GRADS uses the environment variable GAUDFT to determine the path to the
> udft file. You should be able to point GRADS to the correct file by
> changing GAUDFT to the proper path to your UDFT file.
>

GAUDFT is used for the classic, transfer-file based UDFs. The dynamic
extensions in v1.9.0-rc1 use the environment variable GAUDXT instead.
Detais are here:

    http://opengrads.org/wiki/index.php?title=User_Defined_Extensions


> If that's not it, perhaps you have a permission problem with your file.
> Try:
>
>  chmod +r <your_file>
>

This is likely the problem. From the error message:

Error opening user command definition table
 File name is: /usr/local/bin/gex/udxt
Error opening user function definition table
 File name is: /usr/local/bin/gex/udxt

it appears that the file /usr/local/bin/gex/udxt either does not exist, or
have the wrong permission.
As Steve suggests, try this:

chmod +x /usr/local/bin/gex/udxt

If this file does not exist or you do not have permission to issue the chmod
above, ask your system administrator for help.

     Arlindo




--
Arlindo da Silva
dasilva at alum.mit.edu
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