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[netCDFJava #YJA-569104]: Question about accessing a section 2 lookup table in a GRIB2 file

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  • Subject: [netCDFJava #YJA-569104]: Question about accessing a section 2 lookup table in a GRIB2 file
  • Date: Mon, 15 Jun 2009 11:44:29 -0600
Kyle,

The ds.wx.bin file has the Section 2 (Local Use Section) but the Grib Package 
currently ignores it so it's not available at the netcdf-java API layer. My 
question, is the table in the local use section should be used instead of the 
master Grib2 table?  It seems that the parameters are decoded correctly? ie

            Product Definition : 0 Analysis/forecast at horizontal level/layer
            Parameter Category : 1 Moisture
                Parameter Name : 192 Categorical_Rain
               Parameter Units : 
       Generating Process Type : 2 Forecast
                  ForecastTime : 1
            First Surface Type : 1 Ground or water surface
           First Surface value : 0.0
           Second Surface Type : 255 Missing
          Second Surface value : -0.0

As a side note, It would be hard to maintain the Local Use Section of a Grib 
message as there are no restrictions on the
type of data that can be entered into it. Is there some official documentation 
about the usage?  If there is some 
consistency on how the section is used, it "might" be possible to implement but 
at this point I don't know.

Thanks,
Robb...

RObb...


Ticket Details
===================
Ticket ID: YJA-569104
Department: Support netCDF Java
Priority: Normal
Status: Open