Hi Bill, Thanks very much for your response.
Can you suggest an approach for the "pre"-padding? Here is a more respresentative sample of the values: mytimes<-scan(what="") 1334 2310 39 2300 1556 3 404 37 1320 4 211 2320 Thanks! Dan On Thu, Jan 26, 2012 at 10:41 AM, William Dunlap <wdun...@tibco.com> wrote: > > sub("([[:digit:]]{2,2})$", ":\\1", mytimes) > [1] "14:57" "14:57" "13:10" "11:58" "1:37" "18:55" > > That will convert "05" to ":05" and will do nothing > to "5". Pad with 0's before calling sub if that is > required. > > Bill Dunlap > Spotfire, TIBCO Software > wdunlap tibco.com > >> -----Original Message----- >> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On >> Behalf Of Dan Abner >> Sent: Thursday, January 26, 2012 6:50 AM >> To: r-help@r-project.org >> Subject: [R] Inserting a character into a character string XXXX >> >> Hello everyone, >> >> I have a character vector of 24 hour time values in the format hm >> without the delimiting ":". How can I insert the ":" immediately to >> the left of the second digit from the right? >> >> mytimes<-scan(what="") >> 1457 >> 1457 >> 1310 >> 1158 >> 137 >> 1855 >> >> >> Thanks! >> >> Dan >> >> ______________________________________________ >> 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.