R: Strict Half-vectorization

vechs {OpenMx} | R Documentation

## Strict Half-vectorization

### Description

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

### Usage

    vechs(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, excluding 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

`vech`, `rvectorize`, `cvectorize`

### Examples

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

[Package OpenMx version 2.18.1 Index]