zip with Java port

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1

Hello,

I'm using HDF5 with Java port for storing values from a Java program into a HDF5 file.

I write the data with
m_file.createScalarDS(p_dataId, p_workingGroup, DT_INTEGER, l_dims, null, null, 0, l_data);

But my datasets are very large, so I would like to create a zipped dataset, imho I must add a filter for SZ.
How can I create a zipped dataset with the Java API? I don't find any documentation & example

Thanks a lot

Phil

2

Try give a look here [1]. There are several examples: "Read / Write
GZIP Compressed Dataset", "Read / Write Dataset w/ Shuffle Filter and
GZIP Compression" and "Read / Write Dataset using SZIP Compression".

Consider also to apply a shuffling filter before to compress. It could
give you better compression ratio [2].

Cheers,
Nicola.

[1] http://www.hdfgroup.org/HDF5/examples/api18-java.html
[2] http://www.hdfgroup.org/HDF5/doc_resource/H5Shuffle_Perf.pdf

ยทยทยท

On 24 July 2014 07:59, Philipp Kraus <philipp.kraus@tu-clausthal.de> wrote:

Hello,

I'm using HDF5 with Java port for storing values from a Java program into a HDF5 file.

I write the data with
m_file.createScalarDS(p_dataId, p_workingGroup, DT_INTEGER, l_dims, null, null, 0, l_data);

But my datasets are very large, so I would like to create a zipped dataset, imho I must add a filter for SZ.
How can I create a zipped dataset with the Java API? I don't find any documentation & example

Thanks a lot

Phil

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