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]] > > ___________________ ______________________________________________ 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.
