Sorry, I mean to say: z <- rep(x, y)
Ravi. ____________________________________________________________________ Ravi Varadhan, Ph.D. Assistant Professor, Division of Geriatric Medicine and Gerontology School of Medicine Johns Hopkins University Ph. (410) 502-2619 email: rvarad...@jhmi.edu ----- Original Message ----- From: Ravi Varadhan <rvarad...@jhmi.edu> Date: Tuesday, March 9, 2010 11:02 am Subject: Re: [R] is there an inverse method for table()? To: vincent laperriere <vincent_laperri...@yahoo.fr> Cc: r-help@r-project.org > z <- rep(x, each = y) > > Hope this helps, > Ravi. > > ____________________________________________________________________ > > Ravi Varadhan, Ph.D. > Assistant Professor, > Division of Geriatric Medicine and Gerontology > School of Medicine > Johns Hopkins University > > Ph. (410) 502-2619 > email: rvarad...@jhmi.edu > > > ----- Original Message ----- > From: vincent laperriere <vincent_laperri...@yahoo.fr> > Date: Tuesday, March 9, 2010 10:59 am > Subject: [R] is there an inverse method for table()? > To: r-help@r-project.org > > > > Hi, > > > > In R, I know the method table(), which builds a contingency table > of > > the counts y at each level for the factor x. > > But I would like to know what is the inverse method of table(), if > it > > exists, to obtain the vector z, from the two vectors x and y? > > > > x <- (86, 90, 94, 98, 102, 106, 110, 114, 118, 122, 126, 130, > 134, > > 138, 142, 146, 150, 154, 158, 162, 166, 170, 174) > > y <- c(2, 5, 10, 17, 26, 60, 94, 128, 137, 128, 77, 68, 65, 60, > 51, > > 26, 17, 9, 5, 2, 3, 7, 3) > > > > > z > > [1] 86 86 90 90 90 90 90 94 94 94 94 94 94 94 94 > > > 94 94 98 98 98 98 98 98 98 98 98 98 98 98 98 98 98 > 98 > > 98 102 102 102 102 102 > > [40] 102 102 102 102 102 102 102 102 102 102 102 102 102 102 102 > > > 102 102 102 102 102 102... > > [976] ...170 170 170 170 170 170 170 174 174 174 > > > > If such a method does not exist, what code should I type to obtain > > > the complete series quickly? > > > > Thank you for your help. > > I use version 2.10-1 2009-08-24 for Mac OS. > > > > Vincent Laperrière. > > > > > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-help@r-project.org mailing list > > > > PLEASE do read the posting guide > 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.
