toArray function

Matrix to array conversion

Restore an array from its matricization with all the frontal slices of the array next to each other (mode="A")

toArray(x, n, m, r, mode = c("A", "B", "C"))

Arguments

• x: Matrix (or data.frame coerced to a matrix) containing the elements of the frontal slices of an array
• n: number of A-mode elements
• m: number of B-mode elements
• r: number of C-mode elements
• mode: in which mode is the matricized array

Returns

Three way array

References

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

Author(s)

Valentin Todorov valentin.todorov@chello.at and Maria Anna Di Palma madipalma@unior.it and Michele Gallo mgallo@unior.it

Examples

data(elind)
    di <- dim(elind)
    toArray(unfold(elind), di[1], di[2], di[3])