Problem in Use of gr2stn

[Jennifer Adams]

On Mar 12, 2009, at 2:01 PM, mmacleod wrote:

> Good afternoon Folks.
>
> I am trying to get the function gr2stn working in GrADS 2.0.5
>
> I am attaching a png file that shows the area of coverage and the
> control file so one can see the grads expression is correct.
>
> Here is the output from the command line:
>
> ga->   Expression = gr2stn(t,-60.05,46.16)
> Notice:  Automatic Grid Interpolation Taking Place
> DEFINE Error:  Define does not yet support station data
>   Expression results in station data object
>
> then I cleared the display with  clear command  and then I get this
>
> ga-> d gr2stn(t2,-60.05,46.16)
> Notice:  Automatic Grid Interpolation Taking Place
> Invalid station data dimension environment

The success of gr2stn depends on the dimension environment set before
you invoke it.
The above expression will only work if all dims are fixed except for Z
or T.
An environment in which all dimensions are fixed is an 'invalid
station data dimension environment'.
--Jennifer

--
Jennifer M. Adams
IGES/COLA
4041 Powder Mill Road, Suite 302
Calverton, MD 20705
jma at cola.iges.org



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