[Fwd: RE: QR codes "economy size" decomposition]

[Ron Boisvert <boisvert@nist.gov>]

Sender: "Cleve Moler" <Cleve.Moler@mathworks.com>
Subject: RE: QR codes "economy size" decomposition


Hi --

The JAMA code already computes the economy sized decomposition.

  -- Cleve

-----Original Message-----
From: jama@nist.gov [mailto:jama@nist.gov] On Behalf Of Sione
Sent: Tuesday, February 06, 2007 3:25 PM
To: Multiple recipients of list
Subject: QR codes "economy size" decomposition

Hello JAMA users,

I would like to request if anyone has a version of  QRDecomposition that

does "economy size" decomposition the same as in Matlab command like the

following:

[Q,R] = QR(A,0) produces the "economy size" decomposition.
If m>n, only the first n columns of Q and the first n rows of R are
computed. If m<=n, this is the same as [Q,R] = QR(A).


Thanks,
sione.