commutation {MCMCglmm}

Commutation Matrix

Description

Forms an mn x mn commutation matrix which transforms vec({\bf A}) into vec({\bf A}^{'}), where {\bf A} is an m x n matrix

Usage

commutation(m, n)

Arguments

m

integer; number of rows of A

n

integer; number of columns of A

Value

Commutation Matrix

Author(s)

Jarrod Hadfield [e-mail]

References

Magnus, J. R. & Neudecker, H. (1979) Annals of Statistics 7 (2) 381-394

Examples

commutation(2,2)