Something about the way R processes backslashes is defeating me.
Perhaps this is because I have only just started using R for text processing.
I would like to change occurrences of the ampersand & into ampersand
preceded by a backslash.
> temp <- "R & D"
> sub("&", "\&", temp)
[1] "R & D"
> sub("&", "\\&", temp)
[1] "R & D"
> sub("&", "\\\&", temp)
[1] "R & D"
> sub("&", "\\\\&", temp)
[1] "R \\& D"
>
So I can get zero, or two backslashes, but not one. I am sure this is
really simple but I did not find the answer by doing, for example ?regexp
or ?Quotes
Michael Dewey
http://www.aghmed.fsnet.co.uk
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