How to identify/delete non-UTF-8 characters in R

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Another solution using iconv and it argument sub: character string. If not NA(here I set it to ”), it is used to replace any non-convertible bytes in the input.

x <- "fa\xE7ile"
Encoding(x) <- "UTF-8"
iconv(x, "UTF-8", "UTF-8",sub='') ## replace any non UTF-8 by ''
"faile"

Here note that if we choose the right encoding:

x <- "fa\xE7ile"
Encoding(x) <- "latin1"
xx <- iconv(x, "latin1", "UTF-8",sub='')
facile

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