Thanks Christian for confirming it. It helps me to design interoperable HDF5
data product.
From: Christian Ward-Garrison [mailto:cwardgar@xxxxxxxx]
Sent: Monday, June 01, 2015 7:52 PM
To: Joe Lee
Cc: Java NetCDF
Subject: Re: [netcdf-java] A list of HDF5 filters supported by netcdf-java
dataset reader?
Hello H. Joe Lee,
I am not the original author of the HDF5 Java code, but looking at [1] and [2],
it's pretty clear that netcdf-java only supports gzip, shuffle, and fletcher32.
It seems like there were also plans for "szip", "nbit", and "scaleoffset", but
that functionality hasn't been implemented.
Cheers,
Christian
[1]
https://github.com/Unidata/thredds/blob/v4.6.1/cdm/src/main/java/ucar/nc2/iosp/hdf5/H5header.java#L3632
[2]
https://github.com/Unidata/thredds/blob/v4.6.1/cdm/src/main/java/ucar/nc2/iosp/hdf5/H5tiledLayoutBB.java#L191
On Wed, May 27, 2015 at 9:39 AM, H. Joe Lee
<hyoklee@xxxxxxxxxxxx<mailto:hyoklee@xxxxxxxxxxxx>> wrote:
Hi,
I'm looking for information about the full list of HDF5 filters [1]
supported by netcdf-java. I checked the code [2] and it seems that
netcdf-java supports fletcher32, shuffle, and gzip. Does it also
support scale-offset filter / n-bit / and custom filter like LZF [3]
which is used in h5py?
[1] https://www.hdfgroup.org/HDF5/examples/api18-c.html
[2]
https://github.com/Unidata/thredds/blob/76c0f69dacf1f09314f73034b5d5e5fa82353f94/cdm/src/main/java/ucar/nc2/iosp/hdf5/H5tiledLayoutBB.java
[3] https://www.hdfgroup.org/services/contributions.html#filters
--
HDF Product Designer: Ideate interoperable Bigdata for Citizen Science and IoT.
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