2022-08-02- 提取下划线“_”前的数字
2022-08-02 本文已影响0人
c海明威
library(stringr)
str_sub("0.959119909485581_171",1,str_locate("0.959119909485581_171","\\_")[1]-1)
##[1] "0.959119909485581"
library(stringr)
str_sub("0.959119909485581_171",1,str_locate("0.959119909485581_171","\\_")[1]-1)
##[1] "0.959119909485581"