R语言最简单的向量赋值方法示例

x <- 1:10 #将x向量赋值为1 2 3 4 5 6 7 8 9 10

x[] <- 0 #非常简洁的赋值方法,建议使用
x[1:length(x)] <- 0 #不建议使用的赋值方法

x <- seq(from = 1.5 , to = 8.2 ,by = 2.4) 

> w <- c("ab","123")
> rep(w,2)
[1] "ab" "123" "ab" "123"
> rep(w,c(2,3))
[1] "ab" "ab" "123" "123" "123"
> 

> x <- 1:8
> x
[1] 1 2 3 4 5 6 7 8
> attr(x,"dim") <- c(2,4)
> x
  [,1] [,2] [,3] [,4]
[1,] 1 3 5 7
[2,] 2 4 6 8
> dim(x) <- c(4,2)
> x
  [,1] [,2]
[1,] 1 5
[2,] 2 6
[3,] 3 7
[4,] 4 8