so what about : library(ggplot2) z <- breaks(x,equal=NULL,nbins=4) a <- cut(x,z,include.lowest = TRUE) it works for me ! JC
2011/9/9 Martin Batholdy <batho...@googlemail.com>: > Thanks for the suggestions! > > However all these functions don't produce exactly what I want > (at least with my actual data). > > > I need a split-algorithm that converts the values of my vectors into four > factors. > And the crucial part is, that I need exactly the same number of elements in > each factor-level > and no overlapping. > > > > cut() seems to find equal intervals – but that leads to different numbers of > elements in each interval. > > > library(lattice) > equal.count(x,number=4,overlap=0) > > seems to do the job, but strangely enough, it seems to ignore the argument > 'overlap = 0' in my actual vector – > I get factor-borders that overlap. > And I really have to prevent this. > > > > > On 09.09.2011, at 17:49, Andrea Spano wrote: > >> cut ( x , c(0, 1.4 ,6, 8, Inf ), labels = 1:4, include.lowest = T) >> >> On 9 September 2011 17:34, Martin Batholdy <batho...@googlemail.com> wrote: >> Hi, >> >> is there a function or an easy way to convert a variable with continuous >> values into a categorial variable (with x levels)? >> >> here is what I mean: >> >> >> I want to transform x: >> >> x <- c(3.2, 1.5, 6.8, 6.9, 8.5, 9.6, 1.1, 0.6) >> >> into a 'categorial'-variable with four levels so that I get: >> >> [1] 2 2 3 3 4 4 1 1 >> >> so each element is converted into its rank- value / categorial-value >> (in this example four levels are created). >> >> >> >> thanks for any suggestions! >> >> ______________________________________________ >> 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. >> >> >> >> -- >> Andrea Spano' >> >> Quantide s.r.l >> +39 347 747 04 92. >> andrea.sp...@quantide.com >> >> >> This electronic mail transmission may contain confidential information >> addressed only to the person (s) named. Any use, distribution, copyng or >> disclosure by any other person and/or entities other than the intended >> recipient is prohibited. If you received this transmission in error, >> please inform the sender immediately and delete the material. >> > > > [[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. > > ______________________________________________ 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.
