I have 2 vectors:
我有2个向量:
v1 <- letters[1:5]
v2 <- as.character(1:5)
> v1
[1] "a" "b" "c" "d" "e"
> v2
[1] "1" "2" "3" "4" "5"
v1 <- letters[1:I have 2 vectors:
我有2个向量:
v1 <- letters[1:5]
v2 <- as.character(1:5)
> v1
[1] "a" "b" "c" "d" "e"
> v2
[1] "1" "2" "3" "4" "5"
v1 <- letters[1: