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Tor, Since this question has come up before, I created a web page at: http://www.unidata.ucar.edu/software/netcdf-java/reference/GribTables.html THis should answer all your questions. RObb.... On Thu, 8 Oct 2009, Tor Christian Bekkvik wrote:
Hi, The GribPDSParamTable.addParameterUserLookup call did not seem to help in my case; the resulting parameter names/units reported for my gribfile was still not affected. Probable cause: The addParameterUserLookup call only applies to GRIB-1 (ucar.grib.grib1.GribPDSParamTable), while my gribfile triggered the GRIB-2 parser in NetCDF (from NetcdfDataset.openDataset(grib2file);) Questions: -1) Could Netcdf be instructed/hinted to prefer the GRIB-1 reader, when possible ? (JGRIB, a grib-1 reader, was able to read my file) -2) Is there another way to configure GRIB tables (or parameter interpretation) in NetCDF which now would work for both GRIB-1 and GRIB-2 ? Thanks, -Tor C-----Original Message----- From: Robb Kambic [mailto:address@hidden] Sent: 6. oktober 2009 21:02 To: Tor Christian Bekkvik Cc: Gro Fonnes; netcdf-java; Kjell Røang Subject: Re: Configuring GRIB tables in NetCDF On Tue, 6 Oct 2009, Tor Christian Bekkvik wrote:Hi, I have some questions regarding GRIB table configuration: 1) Is there a way to configure GRIBtables in NetCDF withoutrebuildinggrib-6.0.jar in ncSrc-4.0.zip!\lib\release\ ?Tor, Yes, the following routine, in class GribPDSParamTable /** * Reads in the list of tables available and stores them. Does not actually * open the parameter tables files, nor store the list of parameters, but * just stores the file names of the parameter tables. * Parameters for a table are read in when the table is requested (in the * getParameterTable method). * * @param userGribTabList string of userlookup file * @throws IOException on read error */ public static void addParameterUserLookup(String userGribTabList) There is a sample file with the grib jar called userlookup.lst, it has the same syntax as tablelookup.lst. If the table name begins with /, http:, or file: then it looks for the file with the full path name, otherwise it assumes the table is in the resource directory. The tables are loaded according to site ID, subsite ID and table version number that's obtained from the data file. If you load a new table with the same configuration as one in tablelookup.lst file, your new configuration will over write the original configuration. GribPDSParamTable.addParameterUserLookup( "/local/robb/trunk20090914/grib/resources/resources/grib/table s/userlookup.lst");2) Where can I find sourcecode for grib-6.0.jar (or laterversions) ?(the source will answer question 1, but is not included in ncSrc-4.0.zip)The source for the Grib decoder package is located on page: http://www.unidata.ucar.edu/software/decoders/ unders downloads. The Grib package has just went under a major refactor to implement the Ensemble data processing, so some APIs have be deprecated. The deprecated APIs are going to be removed in a future release so I suggest looking at the javaDocs for the changes. RObb...We occasionally have gribfiles using gribtables not defined in grib*.jar. The only solution I currently know, is to unzip the grib*.jar file and modify gribtable definitions inside \resources\grib\tables\tablelookup.lst. (tablelookup.lst points to *.tab files in the same directory) This is not very userfriendly, soperhaps there is a java property or method call where youcan override some gribtable settings?Thanks, Tor C Bekkvik -- Tor Christian Bekkvik Scientist Christian Michelsen Research AS Phone: +47 55 57 42 28============================================================== ================= 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/ ===============================================================================