Re: error saving empty matrix in HDF5 format

[David Bateman]

Ok there is a thread on this exact problem at

http://www.unidata.ucar.edu/projects/coohl/mhonarc/MailArchives/netcdf-hdf-list/msg00097.html

The bottom line is that, it appears that the HDF people are implementing 
something like "H5Screate(H5S_EMPTY)" however that doesn't help us, since
the dimensionality of our empty matrices won't be maintained.... That is
a rank=n matrix when loaded will become "zeros(zeros(n))" and not the
correct dimensionality.

Frankly, I see no simple way to address this. The only thing I can see is
if we save an attribute in the HDF5 file flagging an empty matrix, then
save the dimensions as a vector. This is slighly incompatibile in that 
if other software doesn't check this attribute then they'll end up
loading a 1xN vector with the dimensions of the matrix instead of an
empty matrix.....

Should I go this way?

Regards
David

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David Bateman                                address@hidden
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