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]]
Hi, paste(rep(LETTERS[1:3], each=3), rep(1:3, 3), sep="") -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O On 04/09/07, Dennis Fisher <fisher@plessthan.com> wrote:> > 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. >[[alternative HTML version deleted]]
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 <fisher at plessthan.com>:
> 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 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
> and provide commented, minimal, self-contained, reproducible code.
>
>
Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm