[gradsusr] cat different resolution GFS files

[Brian Gaze Ntl]

Thanks Jeff. 

That makes sense. Any idea whether there's a workaround to this using different grid sizes? 

Brian 

On 13 Apr 2013, at 18:51, Jeff Duda <jeffduda319 at gmail.com> wrote:

> My guess is that is the problem.  I dont' think Grads likes it when you try to construct binary grids with different grid sizes.
> 
> Yeah, see this page on the structure of gridded binary files: http://www.iges.org/grads/gadoc/aboutgriddeddata.html#structure : "Each horizontal grid in a GrADS binary data file must be the same size."
> 
> Jeff Duda
> 
> 
> On Sat, Apr 13, 2013 at 12:34 PM, Brian Gaze <brian.gaze at ntlworld.com> wrote:
>> Hi,
>>  
>> I'm trying to cat GFS GRIB2 files at 12 hour steps, from 0 to 384 hours, and then use the concatenated file which is generated for plots in GrADS. The GFS files I'm using are 0.5 deg from 0 to 192 hours, and 1 deg from 204 to 384 hours. The cat seems to work ok, and I'm able to open and query the file in GrADS. The problem is that when I try and make a plot (using set t 1 last) only values for 0 to 192 hours (the 0.5 deg files) are plotted.
>>  
>> Is the problem occurring because I'm  concatenating different resolution files (0.5 deg and 1 deg)? If this is the case, is there a workaround / solution other than switching over to 1 deg files for the full range?
>>  
>> PS: Using GrADS 2.0.a3.oga.1
>>  
>> Thanks
>>  
>> Brian  
>> 
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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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