Re: [Numpy-discussion] more than 2-D numarrays in recarray?

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

A Dimarts 04 Febrer 2003 13:19, Todd Miller va escriure:
> I see two problems with multi-d numarray fields, both
> solvable:
>
> 1.  Multidimensional numarrays must be described in the recarray spec.
>
> 2. Either numarray or recarray must be able to handle a (slightly) more
> complicated case of recomputing array strides from shape and
> (bytestride,record-length).
>
> I didn't design or implement recarray so there may be other problems as
> well.

I had a look at the code and it seems like you are right.

> I don't think it's a priority now.  What do you need them for?

Well, I've adopted the recarray object (actually a slightly modified vers=
ion
of it) to be a fundamental building block in next release of PyTables. If
arbitrary dimensionality were implemented, the resulting tables would be
more general. Moreover, I'm thinking about implementing unlimited (just o=
ne
axis) array dimension support and having a degenerated recarray with just
one column as a multimensional numarray object would easy quite a lot the
implementation.

Of course, I could implement my own recarray version with that support, b=
ut
I just don't want to diverge so much from the reference implementation.

--=20
Francesc Alted