RE: Problem finding udunits file

• To: Tomislav Urban <turban@xxxxxxxxxxxxxxx>
• Subject: RE: Problem finding udunits file
• From: Robb Kambic <rkambic@xxxxxxxxxxxxxxxx>
• Date: Wed, 19 Jan 2005 14:14:56 -0700 (MST)

On Wed, 19 Jan 2005, Tomislav Urban wrote:

Great!  Thanks that worked.

Working with a small grib noted below I was able to get all the way to
the NetCDF and view it, so that's looking good.  However, when I tried
to run gribtocdl on the real grib obtained from LDM I received several
errors along these lines:

[root@granger CRWR]# gribtocdl -v eta218_200501180000.grib >
eta218_200501180000.cdl
Jan 19 17:01:02 gribtocdl[24090]: Starting Up
Jan 19 17:01:02 gribtocdl[24090]: oversize GRIB product 2
Jan 19 17:01:02 gribtocdl[24090]: GRIB product: YZBA89 KWBE 180000
Jan 19 17:01:02 gribtocdl[24090]: oversize GRIB product 2
Jan 19 17:01:02 gribtocdl[24090]: GRIB product: ZZBB89 KWBE 180000
Jan 19 17:01:03 gribtocdl[24090]: oversize GRIB product 2
Jan 19 17:01:03 gribtocdl[24090]: GRIB product: YPBA98 KWBE 180000

...

Jan 19 17:01:28 gribtocdl[24090]: oversize GRIB product 2
Jan 19 17:01:28 gribtocdl[24090]: GRIB product: ZPBT98 KWBE 180000
Jan 19 17:01:28 gribtocdl[24090]: EOF on input
Jan 19 17:01:28 gribtocdl[24090]: Exiting
Jan 19 17:01:28 gribtocdl[24090]: 319 WMO msgs, 319 GRIBs decoded, 319
written

appears some of the files are corrupt, probably missing the 7777
terminations or worst a bug.  did a cdl file get created?  if so did
gribtonc run on the data.  we don't save/get the awips data so a sample of
the data would help.

robb...

I have read something in the archives about using dcgrib2, but as an
alternative to dcgrib rather than as an alternative to gribtocdl.

Thanks so much for your help!

-----Original Message-----
From: Robb Kambic [mailto:rkambic@xxxxxxxxxxxxxxxxxxxxxxxx]
Sent: Wednesday, January 19, 2005 10:43 AM
To: Tomislav Urban
Cc: decoders
Subject: Re: Problem finding udunits file


On Wed, 19 Jan 2005, Tomislav Urban wrote:

> Hope this is the appropriate forum:
>
>
>
> I'm trying to run gribtonc to convert the LDM eta grib to NetCDF.  I
am
> able to generate the cdl file as follows:
>
>
>
> [ldm@granger CRWR]$ gribtocdl -v narr.grb > narr.cdl
>
> Jan 19 16:09:40 gribtocdl[23916]: Starting Up
>
> Jan 19 16:09:40 gribtocdl[23916]: EOF on input
>
> Jan 19 16:09:40 gribtocdl[23916]: Exiting
>
> Jan 19 16:09:40 gribtocdl[23916]: 9 WMO msgs, 9 GRIBs decoded, 9
written
>
>
>
> However, when I try to create the NetCDF it seems to be having trouble
> finding something in udunits:
>
>
>
> [ldm@granger CRWR]$ gribtonc -v narr.cdl narr.nc < narr.grb
>
> fgets(): Is a directory
>
> udunits(3): Error occurred at line 1
>
> udunits(3): Couldn't read units-file
"/usr/local/udunits/udunits-1.11.7"
>
>
>
> My environment settings are as follows:
>
>
>
> export CPP_UDUNITS=-I/usr/local/udunits/udunits-1.11.7/include
>
> export LD_UDUNITS='-L/usr/local/udunits/udunits-1.11.7/lib -ludunits'
>
> export UDUNITS_PATH='/usr/local/udunits/udunits-1.11.7'
>
>
>
> There is indeed no file in /usr/local/udunits/udunits-1.11.7, rather
it
> contains the udunits directories.
>
>
>
> Any thoughts?
>


Tomislav,

udunits is looking for udunits.dat file.  if you set UDUNITS_PATH to the
file location it will solve the problem. ie

% setenv UDUNITS_PATH ~ldm/etc/udunits.dat

details in url:

http://my.unidata.ucar.edu/cgi-bin/getfile?file=/content/support/help/Ma
ilArchives/decoders/msg00228.html&line=60#glimpse

robb...

==============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
rkambic@xxxxxxxxxxxxxxxx                   WWW: http://www.unidata.ucar.edu/
==============================================================================