[R] create unique ID for each group

Ye Lin yelin at lbl.gov
Tue May 7 20:37:36 CEST 2013


An embedded and charset-unspecified text was scrubbed...
Name: not available
URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20130507/f2317ac5/attachment.pl>


More information about the R-help mailing list