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Re: 20041220: netCDF Decoders - Decoding/Tiling ETA218 (12km) with gribtonc



On Tue, 21 Dec 2004, Francois Vandenberghe wrote:

>
> Robb,
>
> Thank for the quick response. I have made the modifications you suggested,
> ie setting La1/Lo1 to the south west corner of the full ETA218 grid
> and setting the grid_number to the list of all the tiles (there are 54,
> see map at http://www.emc.ncep.noaa.gov/mmb/research/tiles.218.html).
> I ran into a new problem: it seems that the GRIB file carries the "255"
> code for all the tiles and I got the following error messages:
>
> Dec 21 15:54:04 gribtonc.exe[28513]: 374 grid 255 not in grid_number list
> in eta.t00z.awip21806.nc
francois,

sometimes in stitched together  grid files the grid numbers are not used,
only 255 is used.  so replace with grid_number = 255;
>
> I have attached my CDL file for your information and put two tiled
> files (tile 23 and tile 32) at:
> ftp://ftp.rap.ucar.edu:incoming/irap/vandenb/eta.t00z.awip21806.23
> ftp://ftp.rap.ucar.edu:incoming/irap/vandenb/eta.t00z.awip21806.32

i get connection timed out errors on retrieval or chdir errors

GET ftp://ftp.rap.ucar.edu:incoming/irap/vandenb/eta.t00z.awip21806.23 >
eta.t00z.awip21806.23
<HTML>
<HEAD><TITLE>An Error Occurred</TITLE></HEAD>
<BODY>
<H1>An Error Occurred</h1>
404 Can't chdir to irap
</BODY>
</HTML>

>
> Other files can be found under the naming eta.tAAz.awip218FF.TT
> (where AA is the analysis time, FF the forecast lead time and
> TT the tile number) at:
> ftp://ftpprd.ncep.noaa.gov/pub/data/nccf/com/eta/prod/eta.20041221/

i get:

Can't build data connection: Connection timed out


i'm working at home and my connection doesn't permit tranfering of large
data files. if the above solution doesn't work, i look at it tomorrow.

robb...
>
> Thanks for the support,
>
> Francois
>
>
>
> On Tue, 21 Dec 2004, Robb Kambic wrote:
>
> > On Mon, 20 Dec 2004, Unidata Support wrote:
> >
> > >
> > > ------- Forwarded Message
> > >
> > > >To: address@hidden
> > > >From: "Vandenberghe" <address@hidden>
> > > >Subject: netCDF Decoders - Decoding/Tiling ETA218 (12km) with gribtonc
> > > >Organization: ?
> > > >Keywords: 200412201842.iBKIgRcV018844 netCDF decoders gribtonc
> > >
> > > --=_76dbc2476f6428fae144519a869f88c1
> > > Content-Type: text/plain; charset="ISO-8859-1"
> > > Content-Transfer-Encoding: 7bit
> > >
> > > Institution:  NCAR
> > > Package Version: gribtonc
> > > Operating System: LINUX
> > > Hardware Information: Intel Pentium
> > > Inquiry: Hi,
> > >
> > > I am trying to use gribtonc to convert and tile the ETA 218 tiled
> > > products available from:
> > >
> > > ftpprd.ncep.noaa.gov:/pub/data/nccf/com/eta/prod/
> >
> > Francois,
> >
> > i went to the site, there were no files available.
> > >
> > > I have attached my CDL file. The program works fine with one tile, but
> > > when I try to use it with several tiles, then I got the following error
> > > message:
> > >
> > > Dec 20 18:29:49 gribtonc.exe[29974]: 1, eta.t00z.awip21806.nc nav.
> > > mismatch La1: 33.011 != 19.9433
> > >
> > I didn't receive the cdl but here' a few comments. the La1 and Lo1 should
> > be the south west corner of the full ETA218 domain, sound like you coded
> > ti correctly. the grib_number should be all the grid tiles, for ecmwf it
> > is: grid_number = 1,2,3,4,5,6,7,8,9,10,11,12 ;
> >
> > > Here 33.011 is the latitude of the south west corner of the tile, while
> > > 19.9433 is the south west corner of the full ETA218 domain. One tile
> > > having the dimensions 69x72 while the full domain have the dimensions
> > > 491x303.
> > >
> > > I was able to tile other products such as ECMWF tiled data which were
> > > not on a projection map. So I was wondering if the projection is the
> > > problem.
> >
> > all files should have the same projection
> >
> > robb...
> >
> >
> > >
> > > Thanks in advance for any help,
> > >
> > > Francois
> > >
> > >
> > > --=_76dbc2476f6428fae144519a869f88c1
> > > Content-Type: application/octet-stream
> > > Content-Transfer-Encoding: base64
> > > Content-Disposition: attachment; filename="eta218_tiled.cdl"
> > >
> > >
> > > --=_76dbc2476f6428fae144519a869f88c1--
> > >
> > > --
> > > NOTE: All email exchanges with Unidata User Support are recorded in the
> > > Unidata inquiry tracking system and then made publicly available
> > > through the web.  If you do not want to have your interactions made
> > > available in this way, you must let us know in each email you send to us.
> > >
> > > ------- End of Forwarded Message
> > >
> >
> > ===============================================================================
> > Robb Kambic                            Unidata Program Center
> > Software Engineer III                          Univ. Corp for Atmospheric 
> > Research
> > address@hidden                 WWW: http://www.unidata.ucar.edu/
> > ===============================================================================
> >
>

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