chol2inv: Inverse from Choleski (or QR) Decomposition

In pbdDMAT: 'pbdR' Distributed Matrix Methods

Description

qr() takes the QR decomposition.

Usage

## S4 method for signature 'ddmatrix'
chol2inv(x, size = NCOL(x))

Arguments

x	numeric distributed matrices for
size	number of columns of x containing the Choleski factorization.

Details

The function returns the inverse of a choleski factored matrix, or the inverse of crossprod(x) if qr.R(qr(x)) is passed.

Value

A numeric distributed matrix.

Methods

list("signature(x = \"ddmatrix\")")

list("signature(x = \"ANY\")")

pbdDMAT documentation built on May 1, 2019, 6:34 p.m.