[R] using aggregate with survey-design and survey functions

Thomas Lumley tlumley at u.washington.edu
Sun Sep 21 22:39:03 CEST 2003

On Sat, 20 Sep 2003 TyagiAnupam at aol.com wrote:

> In a message dated 9/20/03 9:19:57 AM Pacific Daylight Time,
> tlumley at u.washington.edu writes:
> > svymean needs the survey metadata to get the right mean, and aggregate
> > doesn't give it enough information.  aggregate would need a separate
> > method for svydesign objects.
> Thanks for the info. I tried looking at source code of aggregate, but it only
> points to UseMethod("aggregate"). How can I find the source of this method?

methods("aggregate") will tell you where to look: aggregate.data.frame or


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