Hi carol, You could use the "I" function, which will just return what you pass to it.
Jim On Thu, Mar 10, 2016 at 12:28 AM, carol white via R-help <r-help@r-project.org> wrote: > What should be FUN in aggregate as no function like mean, sum etc will be > applied > Carol > > On Wednesday, March 9, 2016 1:59 PM, Sarah Goslee > <sarah.gos...@gmail.com> wrote: > > > Possibly aggregate(), but you posted in HTML so your data were mangled. > > Please use dput(), post in plain text, and try to explain more clearly > what you want the result to look like. > > Sarah > > On Wed, Mar 9, 2016 at 7:09 AM, carol white via R-help > <r-help@r-project.org> wrote: >> How is it possible to group rows of a matrix or a data frame by the same >> values of the first column? >> 1 14331 453452 653 3762 45 >> >> 1 1433,453452 45, 653 376 >> Thanks >> >> Carol >> >> [[alternative HTML version deleted]] >> >> ___________________ > > > > [[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. ______________________________________________ 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.