[R] On creating grouped data set.

[jim holtman]

Can you provide an example of what you are asking for.  There are
various ways of partitioning a dataframe based on some criteria.  Is
this what you are asking?  A before/after example would be helpful.

On Mon, Jul 21, 2008 at 6:32 AM, Dong-hyun Oh <oh.dongh at gmail.com> wrote:
> Dear UseRs,
>
> I would like to know the way to create grouped data set such as Oats
> data.frame in nlme package.
>
> Specifically, I need to create a grouped data set with PBIB data.frame in
> SASmixed package.
>
> Any help?
>
> Looking forward to hearing from you.
>
> Best,
>
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-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?