[gradsusr] finding differences between two runs with ctl files having different number of variables

[Amulya Chevuturi]

Dear Mr Panda,

It would be better if you send the script and maybe ctl files of both.
Usually this problem shouldnt come if the both files have same
dimensions...and I mean x and y dimensions. As it is not working for you.
Try the lterp command in grads.

Regards
Amulya
Jwaharlal Nehru University

On Wed, Jan 23, 2013 at 4:00 PM, Jagabandhu Panda <jagabandhu at gmail.com>wrote:

> Dear users:
>
>      Hope you guys are doing fine. I need your help or suggestions to
> overcome a problem. I have WRF output from two model runs with same
> horizontal and vertical resolutions. I have two ctl files for this purpose
> with corresponding dat files for them. For both of these outputs, I have
> xdef, ydef, zdef and tdef same for both the files. However, the number of
> variables are different. One contains 166 variables and other 123. Since
> the model was tuned to produce more variables in the output file in the
> earlier case, the number of variables are more. However, in the later case
> it was not tuned to do so. On the other hand, they do produce same
> diagnostics after post processing.
>
> When I want to find the difference between say 2dcape field from these two
> runs, I am unable to do so as it says:
>
> Operation error:  Incompatable grids
>   Dimension ranges aren't equivalent
>   Dimension = 1
>   1st grid range = 5 117   2nd = 5 117
>   Error ocurred at column 16
> DISPLAY error:  Invalid expression
>   Expression = mcape.2-mcape.1
> EXEC error:  error in metvar.sh.  EXEC stopped.
> I am unable to point out how to proceed to find the differences each hour
> for a meteorological variable from the two runs. Could you please suggest
> some way to overcome it if possible. I will really be thankful to you for
> this purpose.
>
> Thanks and regards
> -- Jagabandhu
>
>
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