Thanks.
dgesvd is what I was looking for, for SVD.
But dgeev only works on a square matrix.
dgeqrf (from LAPACK) does a QR factorization on an MxN real matrix, but there's no interface to it in Maxima :-(
--- On Fri, 7/8/11, Robert Dodier <robert.dodier at gmail.com> wrote:
From: Robert Dodier <robert.dodier at gmail.com>
Subject: Re: [Maxima] QR & SVD
To: maxima at etherjones.us
Cc: maxima at math.utexas.edu
Date: Friday, July 8, 2011, 5:36 PM
On 7/8/11, Ether Jones <maxima at etherjones.us> wrote:
>
> Does Maxima have QR and/or SVD factorizations built in?? I couldn't find
> them.
Maxima functions dgeev and dgesvd punt to functions of the same name
in the lapack package. dgeev seems to apply the QR algorithm,
according to comments in the Fortran source code.
hth
Robert Dodier