Re: [R] On creating grouped data set.

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 <[EMAIL PROTECTED]> wrote: > Dear UseRs, > > I wo

[R] On creating grouped data set.

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,