Hi
> Hi Dimitris, > Thanks for your reply. But this is not exactly what i am after. I want to > find the probes that falls into certain regions. In your solution it will > ignore the second probe if it falls into the same region as the first one. > Is there any vector trickb uilt in R to find whether probes fall into > certain regions? > best, > salih Can you explain what is probe and what is region and how Dimitri's code failed to do what you wanted? Only if x is between y values you get one number in check negative and one positive and their multiplication is therefore lower than zero. Regards Petr > > On Fri, Jun 24, 2011 at 10:23 AM, Dimitris Rizopoulos < > d.rizopou...@erasmusmc.nl> wrote: > > > One approach is the following: > > > > x <- rnorm(5) > > y <- matrix(rnorm(5*2), 5, 2) > > > > check <- y - x > > check[, 1] * check[, 2] < 0 > > > > > > I hope it helps. > > > > Best, > > Dimitris > > > > > > > > On 6/24/2011 10:57 AM, Salih Tuna wrote: > > > >> Hi All, > >> What is the fastest way of finding if any members of vector x fall in the > >> range of the rows of matrix y? > >> I do not want to use two for loops as this will take forever. > >> Any help will be appreciated, > >> best, > >> salih > >> > >> [[alternative HTML version deleted]] > >> > >> ______________________________**________________ > >> R-help@r-project.org mailing list > >> https://stat.ethz.ch/mailman/**listinfo/r-help<https://stat.ethz.ch/ > mailman/listinfo/r-help> > >> PLEASE do read the posting guide http://www.R-project.org/** > >> posting-guide.html <http://www.r-project.org/posting-guide.html> > >> and provide commented, minimal, self-contained, reproducible code. > >> > >> > > -- > > Dimitris Rizopoulos > > Assistant Professor > > Department of Biostatistics > > Erasmus University Medical Center > > > > Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands > > Tel: +31/(0)10/7043478 > > Fax: +31/(0)10/7043014 > > Web: http://www.erasmusmc.nl/**biostatistiek/<http://www.erasmusmc.nl/ > biostatistiek/> > > > > [[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.