This this what you want? > A=matrix(1:16,ncol=4) > A [,1] [,2] [,3] [,4] [1,] 1 5 9 13 [2,] 2 6 10 14 [3,] 3 7 11 15 [4,] 4 8 12 16 > diag(A[1:4,4:1]) [1] 13 10 7 4 > -- View this message in context: http://r.789695.n4.nabble.com/minor-diagonal-in-R-tp2529676p2529710.html Sent from the R help mailing list archive at Nabble.com.