On Tue, Mar 9, 2010 at 3:58 PM, vincent laperriere <vincent_laperri...@yahoo.fr> wrote: > 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? >
rep(x,y)? repeats each element in x the number of times in y. Looks about right. Barry ______________________________________________ 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.
