[gradsusr] GRIB2 All Undefined Values

Tue Nov 19 10:44:25 EST 2013

Charles,

   I am using GrADS 2.0.1 (Centros version) from the COLA website.

       Wesley

On Tue, Nov 19, 2013 at 9:15 AM, Charles <cl012685 at gmail.com> wrote:

> Thank you for the reply, Wesley. It sounds like there might be an issue
> with my gribmap or GrADS install. If I run gribmap with the verbose option
> on GRIB1 files, it matches all the variables just fine. However, it returns
> an error with GRIB2 files.
>
> gribmap -v -i gfs.t12z.mastergrb2f12.ctl
>       gribmap: scanning GRIB2 file: gfs.t12z.mastergrb2f12
>       Segmentation fault (core dumped)
>
> When I don't run verbose option on GRIB2 files, gribmap will create an
> index file. But based on the above error, those index files are probably
> not correct. Which would explain my original issue of all values being
> undefined.
>
> Do you have any suggestions on where I should go from here to solve this
> gribmap issue?
>
> Thanks again,
>
> Charles
>
>
> On Tue, Nov 19, 2013 at 7:36 AM, Wesley Ebisuzaki - NOAA Federal <
> wesley.ebisuzaki at noaa.gov> wrote:
>
>> Charles,
>>
>>    It worked for me.
>>
>>       g2ctl gfs.t12z.mastergrb2f12 >junk.ctl
>>                  (I see that you did this)
>>       gribmap -i junk.ctl
>>                  (do not use -0)
>>
>>      grads
>>       Landscape mode? ('n' for portrait): (entered return)
>>       ga-> open junk.ctl
>>       ga-> d hgt200mb
>>
>> Hint:  use gribmap -v -i junk.ctl to see which fields match the ctl file.
>>
>>      Wesley
>>
>>
>>
>> On Mon, Nov 18, 2013 at 4:33 PM, Charles <cl012685 at gmail.com> wrote:
>>
>>> Hello All,
>>>
>>> I am a fairly new user of GrADS. My setup includes: GrADS 2.0.2 on
>>> Fedora 19, g2ctl 0.0.8.8 and wgrib2 v1.9.9.
>>>
>>> I am having issues with all GRIB2 files. I have followed instructions
>>> and I can successfully create control files and index files, but GrADS
>>> returns "all undefined values" no matter what I try to plot. I have been
>>> getting around this by converting the files to GRIB1 and using grib2ctl,
>>> which I have had no trouble with. However, I would like to eliminate that
>>> step. I was wondering if anyone could shed some light on what I am missing?
>>>
>>> In case it is an issue with the control file, I have pasted one below
>>> from today's 12Z GFS 0.5x0.5 degree from NOMADS.
>>>
>>> dset ^gfs.t12z.mastergrb2f12
>>> index ^gfs.t12z.mastergrb2f12.idx
>>> undef 9.999E+20
>>> title gfs.t12z.mastergrb2f12
>>> * produced by g2ctl v0.0.8.8
>>> * command line options: gfs.t12z.mastergrb2f12
>>> * griddef=1:0:(720 x 361):grid_template=0:winds(N/S): lat-lon grid:(720
>>> x 361) units 1e-06 input WE:NS output WE:SN res 48 lat 90.000000 to
>>> -90.000000 by 0.500000 lon 0.000000 to 359.500000 by 0.500000
>>> #points=259920:winds(N/S)
>>>
>>> dtype grib2
>>> ydef 361 linear -90.000000 0.5
>>> xdef 720 linear 0.000000 0.500000
>>> tdef 1 linear 00Z19nov2013 1mo
>>> * PROFILE hPa
>>> zdef 2 levels 50000 20000
>>> options pascals
>>> vars 6
>>> HGT200mb   0,100,20000   0,3,5 ** 200 mb Geopotential Height [gpm]
>>> HGT500mb   0,100,50000   0,3,5 ** 500 mb Geopotential Height [gpm]
>>> UGRD200mb   0,100,20000   0,2,2 ** 200 mb U-Component of Wind [m/s]
>>> UGRD500mb   0,100,50000   0,2,2 ** 500 mb U-Component of Wind [m/s]
>>> VGRD200mb   0,100,20000   0,2,3 ** 200 mb V-Component of Wind [m/s]
>>> VGRD500mb   0,100,50000   0,2,3 ** 500 mb V-Component of Wind [m/s]
>>> ENDVARS
>>>
>>> I have been researching this issue for quite some time and haven't found
>>> a solution yet, so any help is greatly appreciated!
>>>
>>> Charles
>>> University of Oklahoma
>>>
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>>> gradsusr mailing list
>>> gradsusr at gradsusr.org
>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>
>>>
>>
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