Segmentation fault

[Jennifer Adams]

Hi, Steve --
The WRF model output is on a pre-projected Lambert grid -- what you 
need to display it properly is PDEF LCCR with a dtype netcdf descriptor 
file. (That's the GrADS equivalent of "take two aspirin and call me in 
the morning!") Fortunately, this is code that has already been written, 
tested, and documented (!). The only thing missing is the GrADS 
release, which I am in the process of preparing (thus the 
documentation). When it's ready, you'll have to upgrade to 1.9b4, but 
we have a redhat 7.1 system here at COLA which is probably compatible 
with yours, so one of our binary releases should work for you. You can 
try out the 1.9b3 release and see if it works on your system, but the 
pdef lccr stuff isn't in there; you'll get an error message that says 
"PDEF not fully implemented for dtype netcdf/hdfsds".
Jennifer

On May 5, 2005, at 6:18 PM, Ghan, Steven J wrote:

> I'm trying to display netcdf history from wrf. The ncdump -h of this 
> file is attached. <<wrfout_d01_0001-01-01_00_00_00.2d.ncdump>>
>
> I open it with xdfopen using the following ddf file
> DSET ./wrfout_d01_0001-01-01_00:00:00.2d
> TITLE wrf
> UNDEF 99999.0
> XDEF west_east 201 LINEAR 0.0 0.25
> YDEF south_north 2 LINEAR 0.0 0.1
> ZDEF bottom_top 80 LINEAR .125 .250
> TDEF Time 13 LINEAR 0Z1JAN01 5mn
> VARS 4
> T=>t 80 99 perturbation potential temperature
> QVAPOR=>qvapor 80 99 water vapor mixing ratio
> QCLOUD=>qcloud 80 99 cloud water  mixing ratio
> QRAIN=>qrain 80 99 rain water  mixing ratio
> ENDVARS
>
> I can display a 1-d slice of any number of fields, but when I try to 
> display in more than one dimension (i.e., a contour plot) I can only 
> display once. The second display always produces a segmentation fault, 
> even if it is for the same field and dimensions. Any ideas what the 
> problem might be?
>
> I am using gradsnc v1.8SL11 on linux redhat 7.3
>
> -Steve Ghan
> <wrfout_d01_0001-01-01_00_00_00.2d.ncdump>
--
Jennifer M. Adams
IGES/COLA
4041 Powder Mill Rd., Suite 302
Calverton, MD 20705
jma at cola.iges.org

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