On Fri, 24 Oct 2003, Andrew Robinson wrote:
> Hi dear R-community,
>
> I wonder if anyone has written code that will post-process the results of a
> tapply to create a dataframe that includes the outcome, the factor by which
> the function has been applied, and, if the factor is also an interaction,
> then also the levels of contributing factors?
aggregate() is close to this.
-thomas
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