qr-methods {Matrix}R Documentation

Methods for the qr generic

Description

The "Matrix" package provides methods for the QR decomposition of special classes of matrices. The generic function is qr but methods defined in this package can take extra arguments. In particular there is an option for determining a fill-reducing permutation of the columns of a sparse, rectangular matrix.

Methods

x = "dgCMatrix"
QR decomposition of a general sparse double-precision matrix with nrow(x) >= ncol(x). Returns an object of class "sparseQR", see sparseQR.

See Also

qr, sparseQR, dgCMatrix


[Package Matrix version 0.9975-6 Index]