[gradsusr] cdiff with z dim
Mireieta
mireieta at gmail.com
Mon Jan 30 10:40:54 EST 2012
Thanks Jeff, you are right, it works with the display command.
Mireia
2012/1/28 Jeff Duda <jeffduda319 at gmail.com>
> In my experience with this, you simply cannot define a field using cdiff
> in the vertical. You can display something, just not define it. What I
> mean is you will get an issue if you run these commands:
> 'define dtheta = cdiff(theta,z)'
> 'd dtheta'
> but Grads won't have a problem with the following:
> 'd cdiff(theta,z)'
>
> Jeff Duda
>
> On Fri, Jan 27, 2012 at 6:39 PM, Mireieta <mireieta at gmail.com> wrote:
>
>> Hi, I am trying to use cdiff with z dim:
>>
>> 'set z 1 45'
>> 'dtheta=cdiff(theta,z)'
>>
>> and got the next error:
>>
>> "Error from CDIFF: Specified dimension non varying
>> Operation Error: Error from cdiff function
>> Error ocurred at column 1
>> DEFINE error: Invalid expression."
>>
>> I don't undertand, z dim is varying...
>>
>> Thanks!
>> --
>> Mireia
>>
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>>
>>
>
>
> --
> Jeff Duda
> Graduate research assistant
> University of Oklahoma School of Meteorology
> Center for Analysis and Prediction of Storms
>
>
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>
>
--
Mireia
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