Re: NJ and HDF

On 3/12/2012 2:04 PM, Schmunk, Robert B. (GISS-611.0)[SIGMA SPACE 
CORPORATION] wrote:
> First, the HDF5 spec allows for an offset superblock. A Panoply user was
> trying to open an HDF file in which the superblock was offset 1,048,576
> (512*2048) bytes, and the NJ library was throwing back an exception that
> the dataset did not look like valid CDM.
Ive made a mod that will keep reading until the end of file, if you open 
the file specifically as a hdf5 file, which admittedly is not all that 
easy to do. Weve never seen a file with this kind of offset before (it 
will actually fail when opening in netcdf4 library). Do you know who 
created it?

> Second, in a different case, the NJ library was throwing back just a
> NullPointerException, with stack trace
>
>     java.lang.NullPointerException
>         at ucar.nc2.iosp.hdf5.H5header.extendDimension(H5header.java:536)
>         at ucar.nc2.iosp.hdf5.H5header.findDimensionLists(H5header.java:476)
>         at ucar.nc2.iosp.hdf5.H5header.makeNetcdfGroup(H5header.java:378)
>         at ucar.nc2.iosp.hdf5.H5header.makeNetcdfGroup(H5header.java:390)
>         at ucar.nc2.iosp.hdf5.H5header.makeNetcdfGroup(H5header.java:390)
>         at ucar.nc2.iosp.hdf5.H5header.read(H5header.java:182)

This one is probably my bug, but im still trying to figure it out.