rcorr: Random correlation matrix

In ggm: Graphical Markov Models with Mixed Graphs

Random correlation matrix

Description

Generates a random correlation matrix with the method of Marsaglia and Olkin (1984).

Usage

rcorr(d)

Arguments

d	an integer > 0, the order of the correlation matrix.

Details

The algorithm uses rsphere to generate d vectors on a sphere in d-space. If Z is a matrix with such vectors as rows, then the random correlation matrix is ZZ'.

Value

a correlation matrix of order d.

Author(s)

Giovanni M. Marchetti

References

Marshall, G.& Olkin, I. (1984).Generating correlation matrices. SIAM J. Sci. Stat. Comput., 5, 2, 470–475.

See Also

rsphere

Examples

## A random correlation matrix of order 3
rcorr(3)
## A random correlation matrix of order 5
rcorr(5)

ggm documentation built on May 29, 2024, 7:27 a.m.