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Katja,Your questions keep ending up in my spam box, Maybe you should try to use the support page at:
http://www.unidata.ucar.edu/support/index.html#process send to: address@hiddenHere's an answer to part of your question, you can add both Grib1 and Grib2 parameters to the library. The documentation is at:
http://www.unidata.ucar.edu/software/netcdf-java/reference/GribTables.html I downloaded the test file but I haven't looked at it yet. RObb... On Tue, 15 Jun 2010, Moritz, Katja (LfU) wrote:
Hi Robb, as you suggested i now use the netcdf-java-package for reading grib-data and it already worked fine for some data from ECMWF. Now i want to process data from the local model of the german weather service in Grib2. With this data i have two problems: there are some parameters that are not included in the common grib-tables. Is it possible to add some parameters to the table before reading in the data? Second: the interpretation of the grid-coordinates is not correct. The result shoud be longitude (max/min: 63.4678/-34.2451) and latitude (max/min: 70.9998/26.1229) and it is longitude (max/min: 342/383.5) and latitude (max/min: -20/21). It looks like these are still the rotated coordinates and that 360° should be subtracted from the longitude. Do i have to do the "unrotation" by myselfe or is the netcdf-package supposed to give the unrotated coordinates as a result? If you would like to look at the file (COSMO_EU.grib2) - i put it on our website for download under http://www.hnd.bayern.de/login/daten/ (user: hnd-intern, pw: TaKaWaLaSt89). Thanks a lot already for your support! Katja -----Ursprüngliche Nachricht----- Von: Robb Kambic [mailto:address@hidden] Gesendet: Mittwoch, 10. Februar 2010 23:40 An: Moritz, Katja (LfU) Cc: decoders Betreff: Re: Grib2-Decoder Katja, Glad you found the problem, the grib package has been much work. If you look at the netcdf-java page, you will see that it's integrated into that package and then one doesn't have to deal with the details of grib. RObb... On Mon, 8 Feb 2010, Moritz, Katja (LfU) wrote:Dear Mr. Kambic, my name is Katja Moritz and i am working for the Bavarian Environment Agency in Munich, Germany at the Flood Information Centre. Since the German Wether Service (DWD) will provide us in the future with grib2-data it is my task to process this data. We already use some Java-Applications so it would be great, if we could use your Java-Decoder! I already made a first attempt to read a testfile from the DWD (see attachement) and it worked out fine. Only the values i receive with the getData()-Method of the Grib2DataSection can't be correct - they are fare too negative. I already compared the values with the values i get with the C-program GRIB API (ECMWF). Those values looked ok. What do you think is wrong with the data? Do i use your code correctly? Many thanks in advance und many greetings from Munich! Yours sincerely, Katja Moritz ----------------------------------- Dipl.-Hydr. Katja Moritz Bayerisches Landesamt für Umwelt Referat 88: Hochwassernachrichtenzentrale, Hochwasservorhersage Donau u. Inn Lazarettstr. 67, 80636 München Tel.: (089) 9214-1302 E-mail: address@hidden=============================================================================== 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/ ===============================================================================