I think the OP is looking for the construct length(unique(x)) but not really sure what the rest of the question is.
Michael On Apr 19, 2012, at 2:12 AM, Petr PIKAL <petr.pi...@precheza.cz> wrote: > Hi > > Your question is rather cryptic. Why the output shall be 3? What has > unique count to do with match function? > > Maybe you want something what is described in switch help. > > See > > ?switch > > Regards > Petr > >> >> Hi >> >> My code looks like this >> >> I have two parameters x and par1. X contains values and par1 contains > the >> function which i required to use >> >> if par1 is max then output should be max(x). >> >> FUN <- match.fun(par1) >> result=FUN(x) >> >> Is it possible to incorporate the unique count of x within this code >> >> eg >> >> x=("a","b","a","c") . The output should be 3 >> >> ----- >> Thanks in Advance >> Arun >> -- >> View this message in context: > http://r.789695.n4.nabble.com/Help-in-using- >> unique-count-by-match-function-tp4569859p4569859.html >> Sent from the R help mailing list archive at Nabble.com. >> >> ______________________________________________ >> 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. ______________________________________________ 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.