「無效的正則表達式...原因中的R

Question

我收到錯誤消息，而在R.

替換文本

x 
[1] "Easy bruising and bleeding.\\" 

gsub(as.character(x), "\\", "") 
Error in gsub(as.character(x), "\\", "") : 
    invalid regular expression 'Easy bruising and bleeding.\', reason 'Trailing backslash' 

Answer 1

的參數是順序錯誤‘斜槓’‘’錯誤與GSUB。研究help("gsub") 。

gsub("\\", "", "Easy bruising and bleeding.\\", fixed=TRUE) 
#[1] "Easy bruising and bleeding."