[netcdfgroup] reading gziped vlen dataset

Hi all,

I am using netcdf within the BioFormats project [1]. I am trying to read a dataset (generated with HDF5) with properties:

No. of Dimensions: 1
Dimensions Size: 663
Max dimension size: Unlimited
Data Type: String, length = variable
Chunking: 55
Compression: GZIP: level 4, Storage level allocation time: Incremental

When I want to read the data I get following error. If the same dataset is not GZIP compressed, it works...

java.lang.IllegalStateException
    at ucar.nc2.iosp.IospHelper.readData(IospHelper.java:396)
    at ucar.nc2.iosp.IospHelper.readDataFill(IospHelper.java:292)
    at ucar.nc2.iosp.hdf5.H5iosp.readData(H5iosp.java:163)
    at ucar.nc2.iosp.hdf5.H5iosp.readData(H5iosp.java:141)
    at ucar.nc2.NetcdfFile.readData(NetcdfFile.java:1957)
    at ucar.nc2.Variable.reallyRead(Variable.java:841)
    at ucar.nc2.Variable._read(Variable.java:813)
    at ucar.nc2.Variable.read(Variable.java:691)
at loci.formats.services.NetCDFServiceImpl.getArray(NetCDFServiceImpl.java:168) at loci.formats.services.NetCDFServiceImpl.getVariableValue(NetCDFServiceImpl.java:150)
    at loci.formats.in.CellH5Reader.parseROIs(CellH5Reader.java:453)

Is reading of VLen data + Compression possible with NetCDF?

Thanks a lot!

Cheers,
Christoph
[1] http://www.openmicroscopy.org/site/support/bio-formats5/developers/java-library.html



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