mutate()R语言中的函数用于在 DataFrame 中添加新变量，这些变量是通过对现有变量进行操作而形成的。
用法： mutate(x, expr)参数：
x:数据帧
expr:对变量的操作
举例：通过操作列进行创建新的列！
> d <- data.frame( name = c("Abhi", "Bhavesh", "Chaman", "Dimri"),
+ age = c(7, 5, 9, 16),
+ ht = c(46, 23, 34, 69),
+ school = c("yes", "yes", "no", "no") )
> d
name age ht school
1 Abhi 7 46 yes
2 Bhavesh 5 23 yes
3 Chaman 9 34 no
4 Dimri 16 69 no
> mutate(
+ d,
+ x3 = ht + age,
+ x4 = ht * age,
+ x5 = x3 + x4
+ )
name age ht school x3 x4 x5
1 Abhi 7 46 yes 53 322 375
2 Bhavesh 5 23 yes 28 115 143
3 Chaman 9 34 no 43 306 349
4 Dimri 16 69 no 85 1104 1189标签：mutate,函数,no,age,ht,x3,yes,807 From： https://www.cnblogs.com/alex-bn-lee/p/17161473.html