?by
?aggregate
?ave
Further specifics might be forthcoming if self-contained example data
and desired output were offered. The help pages will have worked
examples, of course.
--
David Winsemius
On Jan 28, 2009, at 9:13 AM, Rixon, John C. wrote:
Hi folks:
I am a SQL guy who just downloaded and installed R yesterday. I am
trying to evaluate some "complex" aggregations we are currently
performing with Syncsort (and have tried in Oracle) with R. I have
loaded data in a dataframe and have performed some of the simple
aggregations on a subset of data. What I do not see how to do though,
is to "group" the aggregations on a particular key value (e.g., sum
market_value over account_id).
If you can point me in the right direction I'd very much appreciate
it.
Thanks!
John
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