开发者学堂课程【大数据之R语言速成与实战:R的 list 列表详解】学习笔记,与课程紧密联系,让用户快速学习知识。
课程地址:https://developer.aliyun.com/learning/course/363/detail/4324
R的 list 列表详解
内容介绍
一、R的 list 列表详解
一、R的 list 列表详解
> mylist <- list(stud.id=1234,
+ stud.name="Tom",
+ stud.marks=c(1R,3,14,25,19))
> mylist
> mylist[[1]]
[1]
1234
> mylist[[3]]
[1]12 314 25 19
>mylist[1]
Sstud.id [1] 1234
> mode(mylist[[1]])
[1] "numeric"
> mode (mylist[1])
[1]
"list"
> mylistSstud.id
[1] 1234
> names (mylist)
[1]
"stud.id" "stud.name" "stud.marks"
> names(mylist)<- c("id","name","marks")
> mylist
Sid
[1]
1234
Sname
[1]
"Tom"
Smarks
[1] 12 3 14 25 19
> mylistSparents <- c("Mna","Jutice")
> mylist
Sid
[1]
1234
Sname
[1]
"Tom"
Smarks
[1] 12 3 14 25 19
Sparents
[1] "Mna" " Jutice"
> length(mylist)
[1] 4
> mylist <-mylist[-4]
> mylist
Sid
[1]
1234
$name
[1]
"Tom"
Smarks
[1]
12 3 14 25 19
> other <- list(age=19,sex="male")
> other
Sage
[1]
19
Ssex
[1]
"male"
> lst <- c(mylist,other)
>lst
Sid
[1]
1234
Sname
[1]
"Tom
Smarks
[1]
12 3 14 25 19
Sage
[1]
19
Ssex
[1] "male"