Transposed Array from array

Question

Let A[ , , ] be an array of dimension [2,3,4]

For example,

A <- array(1:24,c(2,3,4))

I want to get a new array B of dimension [2,4,3] such that

B[i,j,k]=A[i,k,j]

for all i,j,k.

Answer 1

Use aperm:

aperm(A, c(1, 3, 2))