[R] New PLYR issue

[Hadley Wickham]

> Note that although ddply does a lot for you, it doesn't reproduce all of
> your calculations on all of the data columns like summaryBy does... you have
> to explicitly create every calculated column in your function.

Well, ddply doesn't, but colwise will.

Hadley

-- 
Assistant Professor / Dobelman Family Junior Chair
Department of Statistics / Rice University
http://had.co.nz/