Hi,everyone.
I have a problem when using the grep.
for example:
a <- c("aa","aba","abac")
b<- c("ab","aba")
I want to match the whole word,so
grep("^aba$",a)
it returns 2
but when I used it a more useful way:
grep("^b[2]$",a),
it doesn't work at all, it can't find it, returning integer(0).
How can I chang the format in the second way?
Thanks.
--
Shao
[[alternative HTML version deleted]]
______________________________________________
[email protected] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
