vech: Vectorize a symmetric matrix

Description Usage Arguments Value Note Author(s) Examples

Description

vech takes the upper diagonal from a symmetric matrix and vectorizes it.

Usage

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vech(x)

Arguments

x

a symmetric matrix.

Value

A vector with the components of the upper diagonal from the matrix, listed by row.

Note

For internal use.

Author(s)

Clecio Ferreira, Diego Gallardo and Camila Zeller.

Examples

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A<-matrix(c(1,2,2,5),nrow=2)
##vectorized A matrix
B<-vech(A)
B
##reconstitute matrix A using B
xpnd(B,2)

skewMLRM documentation built on Nov. 24, 2021, 9:07 a.m.

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