"?UseMethod" reveals a command "method", which I often use in situations 
like this: 

 methods("aggregate")
[1] "aggregate.data.frame" "aggregate.default"    "aggregate.ts"       

Now list "aggregate.data.frame", "aggregate.default", and "aggregate.ts". 

      This works for functions written using the old S3 standard.  It 
may not work (at least in S-Plus 6.1) for functions written using the 
new S4 standard, but I'm currently ignorant of what to do in that case. 

      However, the above might help answer your current question. 

spencer graves


TyagiAnupam@aol.com wrote:

>In a message dated 9/20/03 9:19:57 AM Pacific Daylight Time, 
>tlumley@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? 
>--anupam.
>
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