vech {OpenMx}R Documentation

Half-vectorization

Description

This function returns the half-vectorization of an input matrix as a column vector.

Usage

vech(x)

Arguments

x

an input matrix.

Details

The half-vectorization of an input matrix consists of the elements in the lower triangle of the matrix, including the elements along the diagonal of the matrix, as a column vector. The column vector is created by traversing the matrix in column-major order.

See Also

vech2full, vechs, rvectorize, cvectorize

Examples


vech(matrix(1:9, 3, 3))
vech(matrix(1:12, 3, 4))



[Package OpenMx version 2.0.0-3948 Index]