Is this what you want: > set.seed(1) > x <- sample(letters,15) > y <- sample(letters,15) > z <- intersect(x,y) > # find index in x > match(z, x) [1] 1 4 5 8 9 12 13 15 > # index in y > match(z,y) [1] 11 10 7 1 14 9 5 3 > > z [1] "g" "u" "e" "m" "l" "c" "y" "x" > x [1] "g" "j" "n" "u" "e" "s" "w" "m" "l" "b" "d" "c" "y" "v" "x" > y [1] "m" "r" "x" "i" "y" "t" "e" "z" "c" "u" "g" "a" "f" "l" "q" >
On Sun, Aug 9, 2009 at 8:04 PM, Praveen Surendran<praveen.surend...@ucd.ie> wrote: > Hi all, > > > > Is there a way to get the index of elements in intersect(x,y) where x and y > are vectors with few common elements. > > > > Appreciate your response. > > > > Praveen Surendran. > > > > > [[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. > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve? ______________________________________________ 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.
