[R] Help with aggregate and cor
jmarca at translab.its.uci.edu
Thu Mar 11 18:30:03 CET 2010
On Wed, Mar 10, 2010 at 07:48:45PM +0000, hadley wickham wrote:
> > Run that function hourly with plyr
> > output.hourly <- dlply(df.i1,"tshour",cor.dat)
> Why not
> output.hourly <- ddply(df.i1,"tshour",cor.dat)
Doh! Because I didn't read the docs properly and missed it.
Thanks, much nicer than hacking around with lists.
> ? Generally you want to work with data frames in R, if at all possible.
> Assistant Professor / Dobelman Family Junior Chair
> Department of Statistics / Rice University
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