我有一个来自这样的矩阵的列：
Mat[,1]
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
"89" "89" "2" "87" "77" "6" "89" "89" "89" "88" "83" "81" "2" "89" "89" "19" "81" "82" "88" "89" "85" "82" "74" "87" "5"
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
"3" "89" "17" "71" "89" "88" "88" "88" "77" "75" "46" "0" "81" "88" "89" "0" "89" "89" "89" "89" "0" "5" "9"
我想应用以下功能：
ifelse(Mat1[,1]>=40,1,0)
输出是这样的：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
1 1 0 1 1 1 1 1 1 1 1 1 0 1 1 0 1 1 1 1 1 1 1 1 1 0 1 0 1 1 1 1 1 1 1 1 0 1 1 1 0 1
43 44 45 46 47 48
1 1 1 0 1 1
数字 6、25 和 47 是错误的。我无法理解为什么。你能帮助我吗？