[Octave-patch-tracker] [patch #7537] Handle matlab way to store cell arrays in hdf5 files.

[Mathias Fröhlich]

URL:
  <http://savannah.gnu.org/patch/?7537>

                 Summary: Handle matlab way to store cell arrays in hdf5
files.
                 Project: GNU Octave
            Submitted by: frohlich
            Submitted on: Thu 28 Apr 2011 06:36:32 PM CEST
                Category: None
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any

    _______________________________________________________

Details:

Hi,

I have extended the hdf5 loader routines to handle datasets of object
references in hdf5 files.
Matlab uses this for hdf5/mat files to store cell arrays.
Also it appears sensible to me to import object reference datasets as cell
arrays.

The change extends the cell array hdf5 load function by the code that is able
to interpret object references. Also the cell array's load_hdf5 method is used
in case of an object reference dataset.
The hdf group iteration function is adapted to use H5O_info which replaces the
today deprecated and currently used H5G_info function. Using that change, this
iteration function can easily be reused for traversing the referenced objects
from the new code path.
Using this patch, I am able to load simple matlab V7.3 hdf5 files containing
simple cell arrays including the stored cell arrays which did not show up
before.

The patch is developed against the current release version 3.4.0. But it also
applies fine to todays hg mainline.

Please review, apply and/or suggest improvements.

Thanks

Mathias



    _______________________________________________________

File Attachments:


-------------------------------------------------------
Date: Thu 28 Apr 2011 06:36:32 PM CEST  Name: octave-cell.diff  Size: 9kB  
By: frohlich

<http://savannah.gnu.org/patch/download.php?file_id=23320>

    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/patch/?7537>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/