search for: regmatchpos

...at a character string and tell me the location within the string where it matches with a given string. In this case, where within "Cycle 12 Day 15" is the text "Day" located. The following works in S+, but I haven't been able to locate a function within R that does what regMatchPos does in S+. (If possible, I'd like a function that works in both.) Can someone please help? PKTimes$Day <- substring( PKTimes$Visit, regMatchPos(PKTimes$Visit,"DAY")[,2] +2, nchar(PKTimes$Visit ) Thanks, Michael [[alternative HTML version deleted]]