R语言常用命令

R语言常用命令

> ls()
character(0)
> data <- c(1, 2, 3, 4)
> strings <- "Hello World"
> ls()
[1] "data"    "strings"
> rm(data)
> ls()
[1] "strings"

> v <- c(1, 2, 3, 4, 5)
> mode(v)