Re: ua2nc

• To: Mauricio Gobbi <gobbi@xxxxxxxxxx>
• Subject: Re: ua2nc
• From: Robb Kambic <rkambic@xxxxxxxxxxxxxxxx>
• Date: Fri, 12 Jan 2001 17:23:49 -0700 (MST)

On Fri, 12 Jan 2001, Mauricio Gobbi wrote:

Dear Robb -

Thanks for your reply. All your suggestions were useful and now

I can generate the .nc files. I have been able to generate some results from a couple of wmo files I have, but, I can't get the example file testdata.wmo to work. I think I could use (if not ab-use) a

little more of your help.

The command I use is: > ua2nc ua.cdl test_dir < testdata.wmo

Mauricio,

I know what the problem is? It's a documentation problem and I didn't want
to make a new release. The cdl file was converted to AWIPS standard, but I
didn't update the ua.cdl file, so you need to use raob.cdl.  If it isn't
in the package then it's in the ftp directory.  Try this line:

It looks like everything else was working ok,  the NetCDF file could be
read by ncdump OK.  The reason the ua.lst file was empty was because no
reports were actually written.

Hope this helps,
Robb..

and in ~/test_dir I get 3 files

-rw-r--r--    1 gobbi    usr        10556 Jan 12 10:29 01010200_perl_ua.nc
-rw-r--r--    1 gobbi    usr            0 Jan 12 10:33 ua.lst
-rw-r--r--    1 gobbi    usr          272 Jan 12 10:29 uaLog.121329.log

Notice that ua.lst is empty. I attached the other 2 files if you want to take a look.

I know this is somewhat inconvenient so feel free to - not respond.

--

Mauricio Felga Gobbi Tel: [55][41] 366-1133, ext. 2314 Simepar - Centro Politecnico FAX: [55][41] 366-2122

Cx Postal 19100 - Curitiba PR   email: gobbi@xxxxxxxxxx
CEP 81531-990 - Brasil          http://www.simepar.br/pages/gobbi




Robb Kambic wrote:

> > On Thu, 11 Jan 2001, Mauricio Gobbi wrote: > > > Hi there -

> >
> > First off, I have no experience with netCDF (hopefully I won't
> > need it). I would like to do a conversion of upper air whatever.wmo
> > file into netcdf (then ascii) file. I simply can't find any
> > detailed documentation for the decoders.

> > Hi Mauricio, > > The purpose of the ua2nc is to convert WMO formated Upperair products

> into NetCDF files.  It a specialized format for storing data. The decoders
> usually run inside a LDM program pqact.conf file that looks to aux files
> in the etc directory.  I'm assuming that you are not running an LDM and
> want to convert WMO formated Upperair products into ascii text. To do
> this would require one to modify ua2nc of all references on NetCDF or to
> install the NetCDF package so it doesn't complain.

> > > It's a bit confusing to my what's the role of the cdlfile,

> > snworld.tbl, and how/where those files should be.

> > These files for your configuration should be in the dir where ua2nc is

> being executed.

> > > I have succesfffuly installed netCDF (+ perl extensions), and the

> > decoders. But when I try to convert the example file testdata.wmo,
> > using command:
> >
> > > ua2nc -v ua.cdl /home/gobbi/test_files < testdata.wmo
> >
> > all I get just the file uaLog.111702.log that starts like:
> >
> > ncopen: filename "/local/unidata/test/01010200_perl_ua.nc": No such file or 
directory
> > Opening /local/unidata/test/01010200_perl_ua.nc with ncid -1
> > ncrecinq: ncid -1: Not a netCDF id
> > Wmo =72251, Type =TTCC, Rpt: 0200, Trans: 0201, recput =-1
> > ncrecinq: ncid -1: Not a netCDF id
> > NetCDF::recget result = -1
> > ncrecinq: ncid -1: Not a netCDF id
> > Wmo =72251, Type =TTDD, Rpt: 0200, Trans: 0201, recput =-1
> >
> >From the errors it appears that the netcdf files are not being generated
> by the ncgen program.  I would also put ncgen from the NetCDF package in
> the run directory.

> > For your testing, I would run perl in the degugger mode and see what

> errors show up,

> > % perl -d ua2nc -v ua.cdl . "01" < testdata.wmo > > You can use the NetCDF ncdump program to look at the created NetCDF files. > > Robb... > > > and a bunch of lines like the last four above.

> >
> > Any help will be appreciated.
> >
> > --
> > Mauricio Felga Gobbi          Tel: [55][41] 366-1133, ext. 2314
> > Simepar - Centro Politecnico  FAX: [55][41] 366-2122
> > Cx Postal 19100 - Curitiba PR email: gobbi@xxxxxxxxxx
> > CEP 81531-990 - Brasil                http://www.simepar.br/pages/gobbi
> >

> > ==============================================================================

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

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