Hi, On Wed, Feb 22, 2012 at 4:01 PM, Ben quant <ccqu...@gmail.com> wrote: > Hello, > > What is the best way to get ranks for a vector of values, limit the range > of rank values and create equal count in each group? I call this uniform > ranking...uniform count/number in each group. > > Here is an example using three groups: > > Say I have values: > x = c(3, 2, -3, 1, 0, 5, 10, 30, -1, 4) > names(x) = letters[1:10] >> x > a b c d e f g h i j > 3 2 -3 1 0 5 10 30 -1 4 > I would like: > a b c d e f g h i j > 2 2 1 2 1 3 3 3 1 3 > > Same thing as above, maybe easier to see: > c i e d b a j f g h > -3 -1 0 1 2 3 4 5 10 30 > I would get: > c i e d b a j f g h > 1 1 1 2 2 2 3 3 3 3
Thanks for the clear example. > Note that there are 4 values with a rank of 3 because I can't get even > numbers (10/3 = 3.333). > > Been to ?sort, ?order, ?quantile, ?cut, and ?split. What's wrong with: as.numeric(cut(x, c(min(x)-1, quantile(x, .33), quantile(x, .66), max(x) + 1))) [1] 1 1 1 2 2 2 3 3 3 3 Sarah -- Sarah Goslee http://www.functionaldiversity.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.
