Roberts, J. Kyle wrote:
>
> Dear All,
>
> I am looking for a function in S-PLUS that works like "collapse" in STATA.
> Specifically, I am trying to create some level-2 and level-3 datasets for use
> in HLM from a single dataset that I analyzed as a 3-level model in S-PLUS. I
> tried collapse.groupedData, but I'm not getting exactly what I want.
> In STATA, the function might look like:
>
> collapse (mean) meanses size sector pracad disclim himinty, by(id)
Have a look at aggregate(). Something like:
aggregate(mydf, by = "id", FUN = mean)
where mydf is a data frame with the id variable and the variables to be
collapsed (aggregated) using the mean function.
> Thanks,
> Kyle
>
> ***************************************
> J. Kyle Roberts, Ph.D.
> Baylor College of Medicine
> Center for Educational Outreach
> One Baylor Plaza, MS: BCM411
> Houston, TX 77030-3411
> 713-798-6672 - 713-798-8201 Fax
> jkrobert@bcm.edu
> ***************************************
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