Try this: tapply(B, factor(A, levels = seq(max(A))), sum)
On Thu, Aug 27, 2009 at 9:26 AM, Maithili Shiva <maithili_sh...@yahoo.com>wrote: > > > > > > > > Dear Sirs, > > At the outset I sincerely apologize for reproducing my query to you. I also > thank all of you for the solution you had provided. It has worked on the > actual data I am working with. > > However, there is this peculiar problem which I had realized only after I > had obtained my results. > > e.g. in the example I had attached > > A <- c(2, 2, 1, 3, 7, 3, 3, 1, 14, 7, 31) > B <- c(0.0728,0.9538,4.0140,0.0020,2.5593,0.1620,2.513,0.3798, > .0033,0..2282, 0.1614) > > tapply( B, A, sum) > > I get R output as > > 1 2 3 7 14 31 > 4.3938 1.0266 2.6770 2.7875 0.0033 0.1614 > > However, my requirement is I should get the output as > > 1 2 3 4 5 6 7 8 9 . 14 ..31 > 4.3938 1.0266 2.6770 0 0 0 2.7875 0 0 ..0.0033 .. 0.161 > > i.e. my output should include the values 4, 5, 6, etc. which are not part > of dataset A and the corresponding totals in B (which are anyways 0s). I > need this for my further analysis. Its possible for me to add these 0s > manually, however when the dataset is large, its not practical. > > I am attaching herewith an excel file. I will be grateful if you can guide > me. > > Thanks in advance > > Maithili > start: 2009-08-18 end: 0000-00-00 > > Thinking of ordering food? Find restaurant numbers on Yahoo! India Local > > > Love Cricket? Check out live scores, photos, video highlights and > more. Click here http://cricket.yahoo.com > ______________________________________________ > 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. > > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O [[alternative HTML version deleted]]
______________________________________________ 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.
