One solution is
test <- c("1.11","10.11","11.11","113.31","114.2","114.3")
id <- unlist(lapply(strsplit(test,"[.]"),function(x) {x[2]}))
-----Original Message----- From: Bernd Weiss [mailto:bernd.weiss at uni-koeln.de] Sent: Thursday, August 18, 2005 12:10 PM To: r-help at stat.math.ethz.ch Subject: [R] Regular expressions & sub Dear all, I am struggling with the use of regular expression. I got
as.character(test$sample.id)
[1] "1.11" "10.11" "11.11" "113.31" "114.2" "114.3" "114.8" and need [1] "11" "11" "11" "31" "2" "3" "8" I.e. remove everything before the "." . TIA, Bernd
______________________________________________ R-help at stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html