[R] Help with aggregate and cor

[James Marca]

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.

thanks,
James Marca
> 
> ?  Generally you want to work with data frames in R, if at all possible.
> 
> Hadley
> 
> -- 
> Assistant Professor / Dobelman Family Junior Chair
> Department of Statistics / Rice University
> http://had.co.nz/
> 
> 
> 
> --===============1710152797==
> Content-Type: message/rfc822
> MIME-Version: 1.0

-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.