[Numpy-discussion] matrix default to column vector?

Olivier Verdier zelbier@gmail....
Thu Jun 4 11:08:02 CDT 2009


I really don't see any advantage of matrices over arrays for teaching. I
prefer to teach linear algebra with arrays.
I would also like matrices to disappear from numpy. But then one would need
a new implementation of scipy.sparse, which is (very unfortunately)
matrix-based at the moment.

== Olivier

2009/6/4 Alan G Isaac <aisaac@american.edu>

> > On Sun, May 24, 2009 at 3:45 PM, David Warde-Farley <dwf@cs.toronto.edu>
> wrote:
> >> Anecdotally, it seems to me that lots of people (myself included) seem
> >> to go through a phase early in their use of NumPy where they try to
> >> use matrix(), but most seem to end up switching to using 2D arrays for
> >> all the aforementioned reasons.
>
>
> On 6/4/2009 11:46 AM Keith Goodman apparently wrote:
> > Maybe announcing that numpy will drop support for matrices in a future
> > version (3.0, ...) would save a lot of pain in the long run.
>
>
> Only if you want NumPy to be unusable when teaching
> basic linear algebra.  I believe that would damage
> the speed at which NumPy use spreads.
>
> Alan Isaac
>
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