Yes, the LZF filter works fine on Windows (I'm using it on Windows XP,
32 and 64 bit). You'll need to download the h5py source tarball, grab
the lzf filter and compression sources, and build it into your
application (or standalone library).
There's a README file with the LZF filter that describes how to
register the filter with HDF5.
-Steve
Quoting "Mitchell, Scott - IS" <[email protected]>:
Is there an LZF filter for Windows 32 bit (and eventually 64 bit)?
Scott
-----Original Message-----
From: [email protected] [mailto:hdf-forum-
[email protected]] On Behalf Of [email protected]
Sent: Friday, March 18, 2011 3:47 PM
To: [email protected]
Subject: Re: [Hdf-forum] Compression Level
Quoting "Mitchell, Scott - IS" <[email protected]>:
> Is there any guidance, rule of thumb, whatever on what compression
> level to use? I haven't been able to find much detail; apart from 0
> being no compression and 9 being maximum. Is there a good balance in
> the range 1-9?
>
> Is the selection as much about balancing processor vs. disk load as
> final size?
>
> If I can speed writes with some lossless compression, that would be
> a good thing.
>
>
Scott, the level to choose will probably depend on the data you're
compressing.
You might also want to look at the LZF compression filter
(http://h5py.alfven.org/lzf/). For the data I'm processing, it's been
significantly faster than zlib.
-Steve
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