Message-ID: <9AFF124B-6FC2-48FC-A10A-D95C4A4DCB9F@licht-malerei.de>
Date: 2009-02-08T01:55:34Z
From: Jörg Groß
Subject: sub() with "+" - invalid regular expression
Hi,
can someone help me;
I don't understand why this code doesn't do what it's supposed to do;
x <- c("F+", "F+")
x <- sub("F+", "F", x)
x
[1] "F+" "F+"
(I want "F" "F")
when I try this;
x <- c("F+", "F+")
x <- sub("+", "", x)
x
I get an error message ("invalid regular expression")