[Numpy-discussion] Element-by-element matrix multiplication

Bill Baxter wbaxter at gmail.com
Wed Jun 21 17:40:47 CDT 2006


Actually I think using mat() (just an alias for the matrix constructor) is a
bad way to do it.  That mat() (and most others on that page) should probably
be replaced with asmatrix() to avoid the copy.

--bb

On 6/22/06, Keith Goodman <kwgoodman at gmail.com> wrote:
>
> On 6/21/06, Robert Kern <robert.kern at gmail.com> wrote:
>
> > Keith Goodman wrote:
> > > The NumPy for Matlab Users page suggests mat(a.A * b.A) for
> > > element-by-element matrix multiplication. I think it would be helpful
> > > to also include multiply(a, b).
> > >
> > > a.*b
> > >
> > > mat(a.A * b.A) or
> > > multiply(a, b)
> >
> > It is a wiki page. You may edit it yourself without needing to ask
> permission.
>
> OK. Done. I also added a notice about SciPy's PayPal account being
> suspended.
>
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-- 
William V. Baxter III
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