supermat {ThreeWay} | R Documentation |
Matrix unfolding
Description
Produces matricizations of a three-way array into matrices denoted as super-matrices.
Usage
supermat(X)
Arguments
X |
Array to be unfolded |
Value
A list including the following components:
Xa |
Super-matrix with |
Xb |
Super-matrix with |
Xc |
Super-matrix with |
Author(s)
Maria Antonietta Del Ferraro mariaantonietta.delferraro@yahoo.it
Henk A.L. Kiers h.a.l.kiers@rug.nl
Paolo Giordani paolo.giordani@uniroma1.it
References
H.A.L. Kiers (2000). Towards a standardized notation and terminology in multiway analysis. Journal of Chemometrics 14:105–122.
Examples
# array (2x2x2) with integers from 1 to 8
X <- array(1:8,c(2,2,2))
Y <- supermat(X)
# matricized arrays
Y$Xa
Y$Xb
Y$Xc