I need that duplicated indicate all row indices (occurences) that are duplicated. In your example, rows 2,3,4,5,8
Thanks. Carol On Monday, July 21, 2014 9:17 PM, William Dunlap <wdun...@tibco.com> wrote: Can you give an example of duplicated() not working on the rows of a matrix? Here is an example where it does work: > m <- cbind(c(a=1,b=2,c=3,d=2,e=3,f=4,g=1,h=1), c(11,13,11,13,11,13,13,11)) > class(m) [1] "matrix" > m [,1] [,2] a 1 11 b 2 13 c 3 11 d 2 13 e 3 11 f 4 13 g 1 13 h 1 11 > duplicated(m) [1] FALSE FALSE FALSE TRUE TRUE FALSE FALSE TRUE > m[duplicated(m), ] [,1] [,2] d 2 13 e 3 11 h 1 11 Bill Dunlap TIBCO Software wdunlap tibco.com On Mon, Jul 21, 2014 at 7:54 AM, carol white <wht_...@yahoo.com> wrote: > Hi, > is it possible to find the duplicated rows of a matrix without a loop or i > have to loop over the rows? duplicated doesn't seem to be helpful > > Thanks > > Carol > > [[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. [[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.
