根据一行中存在的观察值改变一个新列

【问题标题】：Mutate a new column based on observations present in a row根据一行中存在的观察值改变一个新列
【发布时间】：2022-10-06 02:56:29
【问题描述】：

我想改变一个新列性别基于列中存在的可用观察结果多变的.下面是数据框

Variable <- c(\"Corrective surgeries undertaken on male persons\",\"Corrective surgeries undertaken on female persons\",\"Corrective surgeries undertaken on transgender persons\")
count <- c(2,3,4)
DF <- data.frame(Variable,count)

如何实现条件语句以生成具有新观察的新列男性,女性和跨性别基于列中的观察多变的?

标签： r dplyr

【解决方案1】：

我们可以使用str_extract 提取子字符串

library(dplyr)
library(stringr)
DF <- DF %>%
    mutate(Gender = str_extract(Variable, 'male|female|transgender'))

-输出

DF
                                                Variable count      Gender
1        Corrective surgeries undertaken on male persons     2        male
2      Corrective surgeries undertaken on female persons     3      female
3 Corrective surgeries undertaken on transgender persons     4 transgender

【讨论】：