查找列/变量中频率最高的因子水平[重复]答案

【问题标题】：Find the factor level with the highest frequency in a column/variable [duplicate]查找列/变量中频率最高的因子水平[重复]
【发布时间】：2021-12-28 22:16:55
【问题描述】：

我已经运行了这段代码

var <- c("A","A","A","A","B","B","B","B","B","B","C","C","C")
table(var)
> table(var)
var
A B C 
4 6 3

对于因子“B”，最大频率为 6。是否有一个函数只返回频率最高的因子的名称“B”。非常感谢任何帮助。谢谢

【问题讨论】：

标签： r

【解决方案1】：

一个可能的解决方案：

library(tidyverse)

var <- c("A","A","A","A","B","B","B","B","B","B","C","C","C")
table(var) %>% which.max %>% names

#> [1] "B"

在基础 R 中：

names(which.max(table(var)))

【讨论】：

【解决方案2】：

使用 tidyverse：

library(tidyverse)

var <- c("A","A","A","A","B","B","B","B","B","B","C","C","C")

df <- tibble(var = var)

df %>% 
  count(var,sort = TRUE) %>% 
  slice(1) %>% 
  pull(var)
#> [1] "B"

^{由reprex package 创建于 2021-11-17 (v2.0.1)}

【讨论】：