sym2vec: Transform symmetric matrix to vector

In parcor: Regularized estimation of partial correlation matrices

Description

This function transforms the upper triangle (without diagonal) of a matrix A into a vector.

Usage

sym2vec(A)

Arguments

A	quadratic matrix of size p x p

Details

The entries of the matrix A are stacked line-by-line.

Value

vector of length p(p-1)/2

Note

This is an internal function.

Author(s)

Nicole Kraemer

Examples

p<-7
A<-matrix(rnorm(p*p),ncol=p)
v<-sym2vec(A)

Example output

Loading required package: MASS
Loading required package: glmnet
Loading required package: Matrix
Loading required package: foreach
Loaded glmnet 2.0-16

Loading required package: ppls
Loading required package: splines
Loading required package: Epi
Loading required package: GeneNet
Loading required package: corpcor
Loading required package: longitudinal
Loading required package: fdrtool

parcor documentation built on May 1, 2019, 9:10 p.m.