[hdf-forum] H5Dset_extent and maxdims

Francesc Alted faltet at pytables.com
Tue Oct 7 06:46:54 EDT 2008


Hi,

I'm trying to wrap the H5Dset_extent call, and I have a question.  In 
the current docs, one can read:

"""
 This function can be applied to the following datasets:

    * Any dataset with unlimited dimensions
    * A dataset with fixed dimensions if the new dimension sizes are 
less than the maximum sizes set with maxdims (see H5Screate_simple) 
"""

(http://www.hdfgroup.org/HDF5/doc/RM/RM_H5D.html#Dataset-SetExtent), 

However, when I try to set a size larger than maximum against a dataset 
with fixed dimensions, the H5Dset_extent call succeeds and effectively 
*enlarges* the dimension (contrarily to what documentation is saying).

Anybody can tell me whether this is an error in the docs or in the 
function itself?  I'm using HDF5 1.8.1 for my tests.

Thanks,

-- 
Francesc Alted
Freelance developer
Tel +34-964-282-249

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