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Problem Reading GRIB Data

Hello,

I am trying to read a variable's data from a GRIB file. The read(java.util.List
section) function is giving an array out of bounds error message for any
section apart from the whole range. Are there any workarounds to this problem
or should I load whole data for that variable and then do subsetting. This
might be a problem if I have to read hundred's of files. 

Error Message:

java.lang.ArrayIndexOutOfBoundsException: 4
        at ucar.ma2.ArrayFloat.setFloat(ArrayFloat.java:193)
        at ucar.ma2.IteratorFast.setFloatNext(IteratorFast.java:61)
        at
ucar.nc2.iosp.grib.GribServiceProvider.readXY(GribServiceProvider.java:177)
        at
ucar.nc2.iosp.grib.GribServiceProvider.readLevel(GribServiceProvider.java:150)
        at
ucar.nc2.iosp.grib.GribServiceProvider.readData(GribServiceProvider.java:134)
        at ucar.nc2.NetcdfFile.readData(NetcdfFile.java:848)
        at ucar.nc2.Variable._read(Variable.java:737)
        at ucar.nc2.Variable.read(Variable.java:451)
        at ucar.nc2.dataset.VariableDS._read(VariableDS.java:206)
        at ucar.nc2.Variable.read(Variable.java:451)
        at ucar.nc2.dataset.VariableDS._read(VariableDS.java:206)
        at ucar.nc2.Variable.read(Variable.java:475)
        at Test2netcdf.readData(Test2netcdf.java:76)
        at Test2netcdf.main(Test2netcdf.java:128)


Cheers,

Adit.