Thanks a lot. That solves the problem :) best, salih On Sat, Jun 25, 2011 at 9:13 AM, Dimitris Rizopoulos < d.rizopou...@erasmusmc.nl> wrote:
> yet another solution is: > > > v <- c(1, 2, 6, 5) > w <- matrix(c(1, 4, 3, 5, 8, 10), ncol = 2, byrow = TRUE) > > check <- outer(w[, 1], v, "-") * outer(w[, 2], v, "-") > v[which(check <= 0, arr.ind = TRUE)[, 2]] > > > Best, > Dimitris > > > > On 6/24/2011 10:05 PM, Martin Morgan wrote: > >> On 06/24/2011 11:12 AM, Dennis Murphy wrote: >> >>> Hi: >>> >>> Not much different from Peter's approach, but here's another try: >>> >>> v<- c(1, 2, 6, 5) >>> w<- matrix(c(1, 4, 3, 5, 8, 10), ncol = 2, byrow = TRUE) >>> >>>> w >>>> >>> [,1] [,2] >>> [1,] 1 4 >>> [2,] 3 5 >>> [3,] 8 10 >>> >>> >>> f<- function(x) v[which(v>= x[1]& v<= x[2])] >>> unlist(apply(w, 1, f)) >>> [1] 1 2 5 >>> >>> If you just do the apply() part, the function will return a list of >>> those elements of v that fall within the i-th interval. >>> >> >> Maybe >> >> > v = c(1, 2, 6, 5) >> > start = c(-Inf, 1, 3, 8) >> > end = c(-Inf, 4, 5, 10) >> > v[ v <= end[findInterval(v, start)] ] >> >> Also IRanges::findOverlaps / countOverlaps in Bioconductor >> >> v[countOverlaps(IRanges(v, v), IRanges(start, end)) != 0] >> >> http://bioconductor.org/**install <http://bioconductor.org/install> >> >> Martin >> >> >>> HTH, >>> Dennis >>> >>> On Fri, Jun 24, 2011 at 9:52 AM, Salih Tuna<saliht...@gmail.com> wrote: >>> >>>> Hi guys, >>>> >>>> let's assume i have the following >>>> >>>> 1 >>>> x = 2 >>>> 6 >>>> 5 >>>> >>>> 1 4 >>>> y = 3 5 >>>> 8 10 >>>> >>>> i want the code to report back 1, 2 and 5 from x. >>>> Basically it shopuld check whether each elements of x falls in the >>>> range of >>>> each row of x. 1 and 2 falls in between 1-4 and 5 falls in between 3-5. >>>> I do this with two for loops but in the case of very large list, it >>>> takes >>>> ages. >>>> >>>> best, >>>> salih >>>> >>>> >>>> On Fri, Jun 24, 2011 at 4:12 PM, Dennis Murphy<djmu...@gmail.com> >>>> wrote: >>>> >>>>> >>>>> Hi: >>>>> >>>>> That leaves open several possibilities. Could you please supply a >>>>> small, reproducible example (i.e., one that someone can copy and paste >>>>> into an R session) that illustrates the problem along with the >>>>> solution you expect? >>>>> >>>>> TIA, >>>>> Dennis >>>>> >>>>> On Fri, Jun 24, 2011 at 2:30 AM, Salih Tuna<saliht...@gmail.com> >>>>> wrote: >>>>> >>>>>> 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 >>>>>> >>>>>> 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> >>>>>>>> <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/**<http://www.r-project.org/**> >>>>>>>> posting-guide.html<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/> >>>>>>> <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<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. >>>>>> >>>>>> >>>> >>>> >>> ______________________________**________________ >>> 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.
