[R] Removing "+" and "?" signs

Linlin Yan yanlinlin82 at gmail.com
Mon Nov 23 00:43:22 CET 2009


Try this:
gsub("[?]", " ", x)

On Mon, Nov 23, 2009 at 7:01 AM, Steven Kang <stochastickang at gmail.com> wrote:
> Hi all,
>
>
> I get an error message when trying to replace *+* or *?* signs (with empty
> space) from a string.
>
> x <- "asdf+,jkl?"
>
> gsub("?", " ", x)
>
>
> Error message:
>
> Error in
> gsub("?", " ", x) :
>  invalid regular expression '?'
> In addition: Warning message:
> In gsub("?", " ", x) :
>  regcomp error:  'Invalid preceding regular expression'
>
> Your expertise in resolving this issue would be appreciated.
>
> Thanks.
>
>
>
> Steven
>
>        [[alternative HTML version deleted]]
>
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