chol2inv: Inverse from Choleski (or QR) Decomposition

Description Usage Arguments Details Value Methods

Description

qr() takes the QR decomposition.

Usage

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## 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 Dec. 11, 2018, 5:04 p.m.