If your grouping is a list, then you can use 'sapply'; e.g., sapply(yourRanking, function(x) sum(x$rank)) # or whatever you want the sum of.
On Sun, Nov 9, 2008 at 4:00 PM, Swanton0822 <[EMAIL PROTECTED]> wrote: > > Hi, > i have group all the data, but now if i would want to sum all the rank in > each group, how can i do it? > ie. i want to sum the rank in every group, not total. so there will be a sum > of rank for month Jan,Feb,.....Dec, therefore there will be total of 12 > vaule of ranking sum. > many thanks, > -- > View this message in context: > http://www.nabble.com/grouping-data-together-tp20389726p20410781.html > Sent from the R help mailing list archive at Nabble.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. > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve? ______________________________________________ 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.
