Hello Jim,
The major hurdle here is exposing 7Zip to HDF5. Luckily it appears as if
this may have been taken care of for you by the HDF-group already [1]. You
should google around to see what has already been done and how hard it is
to install. The next step is to expose this as a compression option for
filters [2]. I am fairly certain that this is just a matter of adding a
simple flag and making sure 7Zip works if available. This should not be
too difficult at all and we would happily consider/review any pull request
that implemented this. Barring any major concerns, I feel that it would
likely be accepted.
Be Well
Anthony
1.
http://www.hdfgroup.org/ftp/HDF5/releases/hdf5-1.6/hdf5-1.6.7/src/unpacked/release_docs/INSTALL_Windows_From_Command_Line.txt
2.
http://pytables.github.com/usersguide/libref/helper_classes.html#the-filters-class
On Thu, Nov 8, 2012 at 9:52 PM, Jim Knoll <jim.kn...@spottradingllc.com>wrote:
> I would like to squeeze out as much compression as I can get. I do not
> mind spending time on the front end as long as I do not kill my read
> performance. Seems like 7Zip is well suited to my data. Is it possible to
> have 7Zip used as the native internal compression for a pytable?****
>
> ** **
>
> If not now hard would it be to add this option?****
>
>
> ------------------------------
>
> * Jim Knoll* *
> **Data Developer*
>
> Spot Trading L.L.C
> 440 South LaSalle St., Suite 2800
> Chicago, IL 60605
> Office: 312.362.4550
> Direct: 312-362-4798
> Fax: 312.362.4551
> jim.kn...@spottradingllc.com
> www.spottradingllc.com
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