I don't understand the question... On Mon, Feb 28, 2011 at 2:46 PM, Nicolas Gutierrez <nicol...@uw.edu> wrote: > Hi All, > > I have a data.frame: > >>pop > > consumed ind recruits gonad cell > 1 516.74 1 0.02 20.21 0.25 > 2 1143.20 1 0.02 20.21 0.50 > 3 250.00 1 0.02 20.21 0.25 > 4 251.98 1 0.02 18.69 0.25 > 5 598.08 1 0.02 18.69 0.25 > 6 437.38 1 0.02 18.69 0.25 > 7 250.00 1 0.02 17.39 0.25 > 8 250.00 1 0.02 17.39 0.25 > 9 250.00 1 0.02 17.39 0.25 > 10 257.07 1 0.02 16.02 0.25 > > And I need to get the number of rows that sums a particular value (e.g. 2).
OK so you want the numer of rows where what sums to 2? > > In my case above it would be 4 (the first 4 rows ==> sum(pop$cell)=2. Ah, where cell sums to 2. Except that in the first 4 rows cell sums to 1.25... Confused! Can you clarify your question? Best, Ista > > Any ideas? > THANKS > > Nico > > > -- > > Nicolas L. Gutierrez > > School of Aquatic and Fishery Sciences > 1122 NE Boat St, Seattle, WA 98105 > > Lab: +1 206 221 5457 > Home: +1 206 290 3858 > www.fish.washington.edu > > ______________________________________________ > 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. > -- Ista Zahn Graduate student University of Rochester Department of Clinical and Social Psychology http://yourpsyche.org ______________________________________________ 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.
