[R-SIG-Finance] extracting a subTable
jeff.a.ryan at gmail.com
Wed Jan 14 22:40:14 CET 2009
> I have a BIG table with data organized by ID, see example on Table#1
> bellow. I would like to extract a smaller table with the same number of
> columns. The rows should include only the last ROW of each ID. Table# 2
> is an example extracted form table #1. I tried using the SUBSET function
> and plan to loop, but I was wondering if someone out there has a more
> efficient way to accomplish this.
> You recommendations are highly appreciated.
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