Hello everybody! I'm using Perl regular Expression for find pattern in my data set.
The pattern is: NaQxy, where a=E, F, G or H and xy != 29. I have tried this: pattern <- "^N[E-H]Q[0-9]{2,2}" index <- grep(pattern, X, perl=T) #where X is my vector But the problem is the xy should not be 29. How can I solve this problem. Thanks!!! Regards, Katrine [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org 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.