lu {Matrix} | R Documentation |
Computes triangular decompositions of square matrices.
lu(x, ...)
x |
a matrix. No missing values or IEEE special values are allowed. |
... |
further arguments passed to or from other methods. |
This is a generic function with special methods for different types
of matrices. Use methods("lu")
to list all the methods
for the lu
generic.
an object of class "LU"
, see LU
; this is
a representation of a triangular decomposition of x
.
Golub, G., and Van Loan, C. F. (1989). Matrix Computations, 2nd edition, Johns Hopkins, Baltimore.
Class definition LU
and function expand
;
qr
, chol
.
x <- Matrix(rnorm(9), 3, 3) lu(x)