Dear all, Thank you so much for your helps. They all works! But I think the Petr solution is the best!
Thanks again. On Aug 11, 2015 1:40 AM, "PIKAL Petr" <petr.pi...@precheza.cz> wrote: > Hi > > here is another approach. > > > cbind(mydata, idx=(rowSums(mydata==2, na.rm=T)>0)*1) > X125 X255 X558 X2366 X177 X255.1 idx > aa 0 1 0 NA 0 0 0 > bb 1 1 0 NA 0 1 0 > cs 2 1 2 1 0 0 1 > de 0 1 0 NA 0 0 0 > gh 2 0 0 0 0 0 1 > > It shall be faster if this is an issue. > > Cheers > Petr > > > > -----Original Message----- > > From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Thierry > > Onkelinx > > Sent: Monday, August 10, 2015 10:29 PM > > To: Lida Zeighami > > Cc: r-help@r-project.org > > Subject: Re: [R] add an idx column to the matrix > > > > Dear Lida, > > > > Here is a solution. Please don't post in HTML. And provide an easy to > > use > > example of the data. E.g. the output of dput(mydata) > > > > set.seed(1234) > > mydata <- matrix( > > sample( > > c(0, 1, 2, NA), > > size = 30, > > replace = TRUE, > > prob = c(2, 1, 1, 1) > > ), > > ncol = 6 > > ) > > > > idx <- apply(mydata, 1, function(x){any(x == 2)}) > > idx[is.na(idx)] <- FALSE > > cbind(mydata, idx) > > > > > > > > ir. Thierry Onkelinx > > Instituut voor natuur- en bosonderzoek / Research Institute for Nature > > and > > Forest > > team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance > > Kliniekstraat 25 > > 1070 Anderlecht > > Belgium > > > > To call in the statistician after the experiment is done may be no more > > than asking him to perform a post-mortem examination: he may be able to > > say > > what the experiment died of. ~ Sir Ronald Aylmer Fisher > > The plural of anecdote is not data. ~ Roger Brinner > > The combination of some data and an aching desire for an answer does > > not > > ensure that a reasonable answer can be extracted from a given body of > > data. > > ~ John Tukey > > > > 2015-08-10 22:11 GMT+02:00 Lida Zeighami <lid.z...@gmail.com>: > > > > > Hi there, > > > > > > I have a matrix contain 0,1,2, NA elements. > > > I want to add a column to this matrix with name of "idx" . then for > > each > > > row, I should put 1 in this column (idx) if there is at least one 2 > > in that > > > row otherwise I should put 0 in this column! > > > > > > for example mydata: > > > > > > 125 255 558 2366 177 255 > > > aa 0 1 0 NA 0 0 > > > bb 1 1 0 NA 0 1 > > > cs 2 1 2 1 0 0 > > > de 0 1 0 NA 0 0 > > > gh 2 0 0 0 0 0 > > > > > > > > > my output should be: > > > > > > > > > 125 255 558 2366 177 255 idx > > > aa 0 1 0 NA 0 0 0 > > > bb 1 1 0 NA 0 1 0 > > > cs 2 1 2 1 0 0 1 > > > de 0 1 0 NA 0 0 0 > > > gh 2 0 0 2 0 2 1 > > > > > > Thank you for your help. > > > > > > [[alternative HTML version deleted]] > > > > > > ______________________________________________ > > > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > > > 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. > > > > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > > 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. > > ________________________________ > Tento e-mail a jakékoliv k němu připojené dokumenty jsou důvěrné a jsou > určeny pouze jeho adresátům. > Jestliže jste obdržel(a) tento e-mail omylem, informujte laskavě > neprodleně jeho odesílatele. 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