The simplest way to create an array is to use the array() function from R and then specify the elements and the dimension as shown in the following code snippet:
arrayA <- array(1:16, dim=c(2,2,4))
The preceding function will produce an array of four matrices of order 2 x 2. By default, it will create the columns of the matrices and place them next to each other. The output of an array looks like this:
> arrayA
, , 1
[,1] [,2]
[1,] 1 3
[2,] 2 4
, , 2
[,1] [,2]
[1,] 5 7
[2,] 6 8
, , 3
[,1] [,2]
[1,] 9 11
[2,] 10 12
, , 4
[,1] [,2]
[1,] 13 15
[2,] 14 16