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QR function
From: |
John W. Eaton |
Subject: |
QR function |
Date: |
Mon, 14 Jul 1997 10:17:04 -0500 |
On 14-Jul-1997, Moritz Harteneck <address@hidden> wrote:
| I am trying to make a QR decomposition of a fairly large matrix
| (ca. 1584x252 real elements). However, I am not interested in the
| rotation matrix q and I want to avoid it due to memory reasons. Does
| anybody know how to do this?
With Octave 2.0.9, you can get R by running qr(x) and asking for only
one output:
octave:1> help qr
qr is a builtin function
...
qr (X) alone returns the output of the LAPACK routine dgeqrf, such
that R = triu (qr (X))
jwe
- QR function, Moritz Harteneck, 1997/07/14
- QR function,
John W. Eaton <=