[Q,R] = qrdelete(Q,R,j)
[Q,R] = qrdelete(Q,R,j)
, where the inputs Q
and R
are the original QR factorization of a matrix A
, returns Q
and R
as the QR factorization of the matrix A
with columns A(:,j)
removed.
qrdelete
uses a series of Givens rotations to zero out the appropriate elements of the factorization.
qr
,qrinsert
(c) Copyright 1994 by The MathWorks, Inc.