Editing Array slicing (section)

===1976<!--197?-->: [[S programming language|S]]/[[R programming language|R]]===
Arrays in [[S programming language|S]] and [[R programming language|GNU R]] are always one-based, thus the indices of a new slice will begin with ''one'' for each dimension, regardless of the previous indices. Dimensions with length of ''one'' will be dropped (unless drop = FALSE). Dimension names (where present) will be preserved.
<syntaxhighlight lang="rout">
> A <- array(1:60, dim = c(3, 4, 5)) # 3x4x5 three-dimensional or cubic array
> A[, , 3] # 3x4 two-dimensional array along first and second dimensions
     [, 1] [, 2] [, 3] [, 4]
[1,]   25   28   31   34
[2,]   26   29   32   35
[3,]   27   30   33   36
> A[, 2:3, 3, drop = FALSE] # 3x2x1 cubic array subset (preserved dimensions)
, , 1

     [, 1] [, 2]
[1,]   28   31
[2,]   29   32
[3,]   30   33
> A[, 2, 3]  # single-dimension array along first dimension
[1] 28 29 30
> A[1, 2, 3] # single value
[1] 28
</syntaxhighlight>