rcor: Generate Random PSD Correlation Matrices

In fungible: Psychometric Functions from the Waller Lab

Generate Random PSD Correlation Matrices

Description

Generate random PSD correlation matrices.

Usage

rcor(Nvar)

Arguments

Nvar	An integer that determines the order of the random correlation matrix.

Details

rcor generates random PSD correlation matrices by (1) generating Nvar squared random normal deviates, (2) scaling the deviates to sum to Nvar, and then (3) placing the scaled values into a diagonal matrix L. Next, (4) an Nvar x Nvar orthogonal matrix, Q, is created by performing a QR decomposition of a matrix, M, that contains random normal deviates. (5) A PSD covariance matrix, C, is created from Q L Q^T and then (6) scaled to a correlation metric.

Value

A random correlation matrix.

Author(s)

Niels Waller

See Also

genCorr

Examples

R <- rcor(4)
print( R )

fungible documentation built on May 29, 2024, 8:28 a.m.