rarray function

Array reconstruction

Produces an array starting from its matricization with all the frontal slices of the array next to each other.

rarray(Xa, n, m, p)

Arguments

• Xa: Matrix (or data.frame coerced to a matrix) containing the elements of the frontal slices of an array
• n: Number of A-mode entities
• m: Number of B-mode entities
• p: Number of C-mode entities

Returns

• X: Array leading to Xa

References

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

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

Examples

# matricized array (frontal slice)
Xa <- matrix(1:8,nrow=2)
X <- rarray(Xa, 2, 2, 2)
# original array
X