changing letters in text in R : I have a text. It includes letters like ş ç ü ö ı. I need to changed them with s c u o i. I wrote following code:

`string <- "ş ç ı ğ ü ö f s x q"
chartr("ş ç ı ğ ü ö", "s c i g u o", string)`

My text file name is `text`. How can apply the code above to my text, since I have still these letters?
