Re: [Pytables-users] Re: [ pytables-Patches-1192700 ] Multi-dimensional HDF5 attributes

[Francesc A. <fa...@ca...>]

Antonio,

I've uploaded your patch for dealing multidimensional attributes in
the SVN repository. I've modified it a bit so that:

=2D When you save python scalars, they become saved as HDF5 scalars
(before, they were saved as arrays of shape (1,)), which is wrong IMO.

=2D When you save numarray scalars, they become saved as HDF5 scalars as
well. I'm hesitating here because I wonder myself whether saving them
as a pickle would be better. I really prefer the implemented solution
but, what do you think about?

=2D For keeping backward compatibility, I added code so that for old
PyTables files so that an HDF5 attribute with shape (1,) will be
mapped to a Python scalar.

With that I think all the requirements for multidimensional attributes
are fulfilled (except perhaps how to serialize numarray scalars on
disk).

Wait until a snapshot will be made this midnight in the carabos
repository of pytables in order to have a try at final code.

I'll look into your second patch when I have more time (I'm a bit busy
lately :-/). Thanks for it anyway!

Ciao,

=46rancesc

A Dimarts 10 Maig 2005 23:55, Antonio Valentino va escriure:
> Il giorno mar, 10-05-2005 alle 14:08 +0200, Francesc Altet ha scritto:
> > Hola Antonio,
> >
> > Sorry for the late response, but I was very busy lately (PyTables 1.0
> > was the responsible of that ;)
> >
> > A Dijous 05 Maig 2005 22:37, Antonio Valentino va escriure:
> > > Hi Francesc,
> > > the problem on scalar values seems to be fixed now.
> > > In the new patch is included your test suite with some changes.
> > > Let me know if it is good for you.
> >
> > Thanks. It seems cleaner to me indeed. Unfortunately, the patch does
> > not apply well against PyTables 1.0. Could you make the necessary
> > modifications to this?
>
> Hi Francesc,
> I have just uploaded the mdattr patch against PyTables 1.0.
>
> I also submitted a new patch that should provide a whider support for
> chunked layout datasets.
> Please take a look and let me know what do you think about.
>
> ciao
>
> [...]
>
> > Cheers,

=2D-=20
>0,0<   Francesc Altet =A0 =A0 http://www.carabos.com/
V   V   C=E1rabos Coop. V. =A0=A0Enjoy Data
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