Removing "+" and "?" signs

Hi all,

I get an error message when trying to replace *+* or *?* signs (with  
empty
space) from a string.

x <- "asdf+,jkl?"

gsub("?", " ", x)
Since both ? and + are special regex characters, to do both the  
substitutions at once you need to use double backslashes and an <or>

 > gsub("\\?|\\+", " ", x)
[1] "asdf ,jkl "
David

>
>
> 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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David Winsemius, MD
Heritage Laboratories
West Hartford, CT

Removing "+" and "?" signs

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