ThreeWay: supermat – R documentation

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supermat

Matrix unfolding

Produces matricizations of a three-way array into matrices denoted as super-matrices.

supermat(X)

`X`	Array to be unfolded

A list including the following components:

`Xa`	Super-matrix with `B`-mode entities nested within `C`-mode entities (all the frontal slices of the array next to each other)
`Xb`	Super-matrix with `C`-mode entities nested within `A`-mode entities (all the horizontal slices of the array next to each other)
`Xc`	Super-matrix with `A`-mode entities nested within `B`-mode entities (all the lateral slices of the array next to each other)

H.A.L. Kiers (2000). Towards a standardized notation and terminology in multiway analysis. Journal of Chemometrics 14:105–122.

# 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

Three-Way Component Analysis

v1.1.3

GPL (>= 2)

Authors

Maria Antonietta Del Ferraro, Henk A.L. Kiers, Paolo Giordani

Initial release

2015-09-07