Hi All:
On Jun 23, 2008, at 9:53 AM, Berend Hasselman wrote:
Jeffrey Spies wrote:
Hi all,
Is there an LR decomposition function in R and, if not, how can we
get the
non-compact representation of Q from QR decomposition?
Thanks,
Jeff.
I assume you mean a QR decomposition (I don't know what an LR
decomposition
is).
You can get the answers to your questions by typing
?qr
and taking it from there (click on qr.Q).
Search the R help first.
Berend
LR is the transpose of QR and is used in some system identification
routines (see for example some of the papers by Picci). I don't
know if any of the R routines for system identification have an LR,
but you can do a QR decomposition on the transpose of the matrix.
-Roy M
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