2019-01-12
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747
創(chuàng)建一個列表的示例
> g <- "My First List"
> h <- c(25, 26, 18, 39)
> j <- matrix(1:10, nrow=5)
> k <- c("one", "two", "three")> mylist <- list(title=g, ages=h, j, k)> mylist
$title[1] "My First List"$ages[1] 25 26 18 39[[3]][,1] [,2][1,] 1 6[2,] 2 7[3,] 3 8[4,] 4 9[5,] 5 10[[4]][1] "one" "two" "three"
> mylist[[2]]
[1] 25 26 18 39
> mylist[["ages"]]
[[1] 25 26 18 39






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