cut()
R语言中的函数用于将数字向量划分为不同的范围。
用法:
cut.default(x, breaks, labels = NULL, include.lowest = FALSE, right = TRUE, dig.lab = 3)
参数:
x:数字向量
break:向量的断点
labels:级别标签
包括.最低:包含最低中断值的布尔值
right:布尔值关闭右侧的区间
挖掘实验室:未提供标签时使用
范例1:
# R program to divide vector into ranges
# Generating a vector with random numbers
y <- rnorm(100)
# the output factor is created by the division
# of the range of variables into pi / 3*(-3:3)
# 4 equal-length intervals
table(cut(y, breaks = pi / 3*(-3:3)))
输出:
(-3.14, -2.09] (-2.09, -1.05] (-1.05, 0] (0, 1.05] (1.05, 2.09] 0 12 33 40 12 (2.09, 3.14] 2
范例2:
# R program to divide vector into ranges
# Creating vectors
age <- c(40, 49, 48, 40, 67, 52, 53)
salary <- c(103200, 106200, 150200, 10606, 10390, 14070, 10220)
gender <- c("male", "male", "transgender",
"female", "male", "female", "transgender")
# Creating data frame named employee
employee<- data.frame(age, salary, gender)
# Creating a factor corresponding to age with labels
wfact = cut(employee$age, 3, labels = c('Young', 'Medium', 'Aged'))
table(wfact)
输出:
wfact Young Medium Aged 4 2 1
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注:本文由纯净天空筛选整理自nidhi_biet大神的英文原创作品 Divide a Vector into Ranges in R Programming – cut() Function。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。