>>>>> "GF" == Gonçalo Ferraz <[EMAIL PROTECTED]> >>>>> on Fri, 17 Aug 2007 11:03:09 -0400 writes:
GF> Thanks much. x %in% y works. yes, indeed. But I wonder a bit why nobody remarked on the facts that 1) you use "match" in the subject of your e-mail 2) match() is the basic ingredient you use: '%in%' is trivially defined via match(). Type `%in%` in your R session. Regards, Martin GF> On 8/17/07, jim holtman <[EMAIL PROTECTED]> wrote: >> >> Also if you want all the matches >> >> > x[x %in% y] >> [1] 2 3 3 3 >> >> >> On 8/17/07, Gon�alo Ferraz <[EMAIL PROTECTED]> wrote: >> > Hi, >> > >> > Imagine a vector x with elements (1,2,1,1,3,5,3,3,1) and a vector y with >> > elements (2,3). I need to find out what elements of x match any of the >> > elements of y. >> > >> > Is there a simple command that will return a vector with elements >> > (F,T,F,F,T,F,T,T,F). Ideally, I would like a solution that works with >> > dataframe colums as well. >> > >> > I have tried x==y and it doesn't work. >> > x==any(y) doesn't work either. I realize I could write a foor loop and >> go >> > through each element of y asking if it matches any element of x, but >> isn't >> > there a shorter way? >> > >> > Thanks, >> > Gon�alo >> > >> > [[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. >> > >> > >> >> >> -- >> Jim Holtman >> Cincinnati, OH >> +1 513 646 9390 >> >> What is the problem you are trying to solve? >> GF> [[alternative HTML version deleted]] GF> ______________________________________________ GF> R-help@stat.math.ethz.ch mailing list GF> https://stat.ethz.ch/mailman/listinfo/r-help GF> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html GF> and provide commented, minimal, self-contained, reproducible code.
______________________________________________ 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.