[R] generating a new variable based on results of a by command
Economics Guy
economics.guy at gmail.com
Thu Jun 21 15:53:40 CEST 2007
An embedded and charset-unspecified text was scrubbed...
Name: not available
Url: https://stat.ethz.ch/pipermail/r-help/attachments/20070621/c6a0182b/attachment.pl
More information about the R-help
mailing list