[R] Noob question - Identity argument within aggregate function?

[peter dalgaard]

On Mar 3, 2012, at 02:30 , knavero wrote:

> I've also searched "?identity" in the R shell and it doesn't seem to be the
> definition I'm looking for for this particular usage of "identity" as an
> argument in the aggregate function. I simply would appreciate a conceptual
> explanation of what it does here and how it relates to the error.
> 

You just need to read the help file for aggregate.zoo, I think. 

-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com