- > aMtr <- matrix(1:25, ncol = 5, nrow = 5)
- > aMtr
- [,1] [,2] [,3] [,4] [,5]
- [1,] 1 6 11 16 21
- [2,] 2 7 12 17 22
- [3,] 3 8 13 18 23
- [4,] 4 9 14 19 24
- [5,] 5 10 15 20 25
- > aMtr[1:2, 1:2]
- [,1] [,2]
- [1,] 1 6
- [2,] 2 7