按老師輸入的輸入后出來的結果不一樣，有錯誤
> y <- 1:4
> y
[1] 1 2 3 4
> names(y) <- c("a" "b" "c" "d")
錯誤: unexpected string constant in "names(y) <- c("a" "b""
> y
[1] 1 2 3 4
> y[2]
[1] 2
> names(y) <- ("a","b","c","d")
錯誤: 意外的',' in "names(y) <- ("a","
> y
[1] 1 2 3 4
2019-07-19
y <- 1:4
names(y) <- c("a","b","c","d")
你這樣試試，你的問題第一次是c函數中的沒有逗號分隔，第二次是沒有用c函數連接數據