younger
最近看learning R这本书,里面讲到string包的时候提到数据清洗,源代码为
`gender <- c(
"MALE", "Male", "male", "M", "FEMALE",
"Female", "female", "f", NA
)
clean_gender <- str_replace(
gender,
ignore.case("^m(ale)?$"),
"Male"
)
然而运行的时候提示错误,哪位大神告知一下该怎么实现字符串的替换,目的是把MALE,Male,male,M都替换成Male。
:cry: :cry: :cry: :cry: