conditional grouping of variables: ave or tapply or by or???

Thu, Apr 23, 2009 3:11 PM

An embedded and charset-unspecified text was scrubbed...
Name: not available
URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20090424/6f06538e/attachment-0001.pl>

Thread (3 messages)

Ozan Bakis conditional grouping of variables: ave or tapply or by or??? Apr 23 Hadley Wickham conditional grouping of variables: ave or tapply or by or??? Apr 23 Gabor Grothendieck conditional grouping of variables: ave or tapply or by or??? Apr 23