But just noting the usual floating point stuff, Jim's approach might run into problems depending on what you have as "numbers" and what is meant by "identical."
Cheers, Bert Bert Gunter Genentech Nonclinical Biostatistics (650) 467-7374 "Data is not information. Information is not knowledge. And knowledge is certainly not wisdom." H. Gilbert Welch On Mon, Jan 20, 2014 at 9:48 AM, jim holtman <jholt...@gmail.com> wrote: > Use 'table' to count the occurances and then select the one that has a > count of 5. > > Jim Holtman > Data Munger Guru > > What is the problem that you are trying to solve? > Tell me what you want to do, not how you want to do it. > > > On Mon, Jan 20, 2014 at 12:07 PM, Alaios <ala...@yahoo.com> wrote: >> Dear all, >> I would like to select from a vector of 10 elements, 5 of those that are >> identical. >> How can I do that in R? I guess one way would be to taking random numbers >> and see if that appeared again. Is though there a more straightforward >> approach? >> >> Regards >> Alex >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> 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.
