qrdelete

Purpose

Delete a column from the QR factorization.

Synopsis

[Q,R] = qrdelete(Q,R,j)

Description

[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.

Algorithm

qrdelete uses a series of Givens rotations to zero out the appropriate elements of the factorization.

See Also

 qr, qrinsert

(c) Copyright 1994 by The MathWorks, Inc.