Re: [Pytables-users] dimension scales

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

Dear Eli,

El dc 06 de 06 del 2007 a les 12:31 -0700, en/na Ateljevich, Eli va
escriure:
> Hello all,
> I am wondering if there has been any progress made with dimension
> scales? Is it available, either in a patch or alpha release? There was a
> lot of good discussion of it in early 2006.

Nope, after the discussion I'm afraid that little more happened for
implementing dimension scales.

> It seems that PyTables not only doesn't understand the dimension scales,
> it can't access their data at all. The node is set as unimplemented
> because the CLASS attribute is set to something PyTables doesn't
> understand. 
> 
> This has caused me problems occasionally. The CLASS attribute gets set
> in a number of HDF5 profiles. Is there a programmatic way to force
> PyTables to read the dataset as another type like Array? The arrays
> themselves are pretty simple -- if it were not for the CLASS attribute
> PyTables would easily be able to read the dataset.

That's correct.  I've fixed this in trunk:

http://www.pytables.org/trac/changeset/2996

Now a try to recognize the dataset using heuristics is made before
issuing the warning and mapping to UnImplemented.  Hopefully, this fix
should be enough to let users to access to dimension scales datasets.

Thanks for bringing this to our attention,

-- 
Francesc Altet    |  Be careful about using the following code --
Carabos Coop. V.  |  I've only proven that it works, 
www.carabos.com   |  I haven't tested it. -- Donald Knuth