R: Vectorize a matrix

vec {matrixcalc} | R Documentation

## Vectorize a matrix

### Description

This function returns a column vector that is a stack of the columns of x, an m by n matrix.

### Usage

    vec(x)

### Arguments

`x` | a matrix

### Value

A matrix with m\;n rows and one column.

### Author(s)

Frederick Novomestky fnovomes@poly.edu

### References

Magnus, J. R. and H. Neudecker (1999) Matrix Differential Calculus with Applications in Statistics and Econometrics, Second Edition, John Wiley.

### Examples

    x <- matrix( seq( 1, 16, 1 ), nrow=4, byrow=TRUE )
    print( x )
    vecx <- vec( x )
    print( vecx )

[Package matrixcalc version 1.0-3 Index]