[R] Fund style categorizing

[Jim Holtman]

?aggregate
?tapply
data.table package

example data and output would have been useful

Sent from my iPad

On Feb 6, 2011, at 15:02, Ning Cheng <wakinchauemil at gmail.com> wrote:

> I've got a fund performance report for the last year,in which one
> column states their management style,i.e. long/short,market neutral. I
> want to categorize all the fund into subgroups by their management
> style.How can I do that?
> 
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