Hi, May be this helps: gsub(".*\\w+\\s+(.*)\\s+.*","\\1",test) #[1] "9,36" "9,36" "9,66" "9,66" "9,66" "10,04" "10,04" "10,04" "6,13" #[10] "6,13" "6,13"
A.K. ----- Original Message ----- From: PIKAL Petr <petr.pi...@precheza.cz> To: r-help <r-help@r-project.org> Cc: Sent: Tuesday, July 9, 2013 5:45 AM Subject: [R] regular expression strikes again Dear experts in regexpr. I have this dput(test[500:510]) c("pH 9,36 2", "pH 9,36 3", "pH 9,66 1", "pH 9,66 2", "pH 9,66 3", "pH 10,04 1", "pH 10,04 2", "pH 10,04 3", "RGLP 144006 pH 6,13 1", "RGLP 144006 pH 6,13 2", "RGLP 144006 pH 6,13 3") and I want something like this gsub("^.*([[:digit:]],[[:digit:]]*).*$", "\\1", test[500:510]) [1] "9,36" "9,36" "9,66" "9,66" "9,66" "0,04" "0,04" "0,04" "6,13" "6,13" [11] "6,13" but with 10,04 values instead of 0,04. I tried gsub("^.*([[:digit:]]+,[[:digit:]]*).*$", "\\1", test[500:510]) or other variations but without any success. Please help. Regards Petr ______________________________________________ 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. ______________________________________________ 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.