[R] Grouping data in a data frame: is there an efficient way to do it?

David M Smith david at revolution-computing.com
Thu Sep 3 01:28:30 CEST 2009


An embedded and charset-unspecified text was scrubbed...
Name: not available
URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20090902/60418afa/attachment-0001.pl>


More information about the R-help mailing list