Or something like: R> do.call(paste, c(expand.grid(LETTERS[1:3], 1:3), sep="")) [1] "A1" "B1" "C1" "A2" "B2" "C2" "A3" "B3" "C3"
(The ordering is bit different, but that shouldn't matter.) Andy From: Dimitris Rizopoulos > try this: > > paste(rep(LETTERS[1:3], each = 3), 1:3, sep = "") > > > Best, > Dimitris > > ---- > Dimitris Rizopoulos > Ph.D. Student > Biostatistical Centre > School of Public Health > Catholic University of Leuven > > Address: Kapucijnenvoer 35, Leuven, Belgium > Tel: +32/(0)16/336899 > Fax: +32/(0)16/337015 > Web: http://med.kuleuven.be/biostat/ > http://www.student.kuleuven.be/~m0390867/dimitris.htm > > > Quoting Dennis Fisher <[EMAIL PROTECTED]>: > > > Colleagues, > > > > I want to create the following array: > > "A1", "A2", "A3", "B1", "B2", "B3", "C1", "C2", "C3" > > > > I recall that there is a trick using "c" or "paste" permitting me to > > form all combinations of c("A", "B", "C") and 1:3. But, I can't > > recall the trick. > > > > Dennis > > > > > > Dennis Fisher MD > > P < (The "P Less Than" Company) > > Phone: 1-866-PLessThan (1-866-753-7784) > > Fax: 1-415-564-2220 > > www.PLessThan.com > > > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-help@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 > > and provide commented, minimal, self-contained, reproducible code. > > > > > > > > Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm > > ______________________________________________ > R-help@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 > and provide commented, minimal, self-contained, reproducible code. > > > ------------------------------------------------------------------------------ Notice: This e-mail message, together with any attachments,...{{dropped}} ______________________________________________ R-help@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 and provide commented, minimal, self-contained, reproducible code.
