Hi Karl,

I mainly have data frames. summarize() does not seem to work with multiple
columns from a data frame. Any suggestion? Thanks.

Jun

On Tue, Apr 7, 2009 at 4:49 AM, Karl Ove Hufthammer <
Karl.Hufthammer@math.uib.no> wrote:

> Jun Shen:
>
> > summarize() can apply multiple functions to one column
>
> No, summarize() can apply multiple functions to *multiple* columns
> (i.e., matrices). That’s one of the advantages of summarize() over
> aggregate().
>
> --
> Karl Ove Hufthammer
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>



-- 
Jun Shen PhD
PK/PD Scientist
BioPharma Services
Millipore Corporation
15 Research Park Dr.
St Charles, MO 63304
Direct: 636-720-1589

	[[alternative HTML version deleted]]

