我正在尝试更换两个" st。"和" ste。"与" st"。似乎以下情况应该有效,但事实并非如此:
require("stringr")
county <- c("st. landry", "ste. geneveve", "st. louis")
str_replace_all(county, c("st\\.", "ste\\."), "st")
答案 0 :(得分:42)
您可以使用|
表示“或”
> str_replace_all(county, "st\\.|ste\\.", "st")
[1] "st landry" "st geneveve" "st louis"
或在基地R
> gsub("st\\.|ste\\.", "st", county)
[1] "st landry" "st geneveve" "st louis"
答案 1 :(得分:0)
> A<-"this string, contains a handful of, useless: punctuation. Some are to escape. Aaargh! Some might be needed, but I want none!"
> gsub(", |: |\\. |!","",A)
[1] "this string contains a handful of useless punctuation Some are to escape Aaargh Some might be needed but I want none"