R 向数据中添加间隔列

我有这个数据框

x <- data.frame("age" = c(1,5,11,12,13,21,25,36,35))

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使用

cut（）

x$class
x$class <-

age class
1   [0-10]
5   [0-10]
11  [11-20]
12  [11-20]
13  [11-20]
21  [21-30]
25  [21-30]
36  [31-40]
35  [31-40]

x$class <- cut(x$age, breaks = seq(0,100,10), include.lowest = TRUE)

#   age   class
# 1   1  [0,10]
# 2   5  [0,10]
# 3  11 (10,20]
# 4  12 (10,20]
# 5  13 (10,20]
# 6  21 (20,30]
# 7  25 (20,30]
# 8  36 (30,40]
# 9  35 (30,40]