On Tue, 30 Mar 2004 00:06:39 +0400 (MSD) Oleg Bartunov wrote: > Eric, > > thanks for quick reply. at first look I thought it is what I need, > but, unfortunately, it doesn't applied to original data - it > creates new data with loosing original indexes ! I want to keep > indexes of original data, but replace original data with $mids of > corresponding$breaks.
Then you just don't say table() after using cut(). > So, if I have z = 1:10, t=hist(z,plot=F) > > z > [1] 1 2 3 4 5 6 7 8 9 10 > > t$breaks > [1] 0 2 4 6 8 10 > > t$mids > [1] 1 3 5 7 9 > > I want z=c(1,1,3,3,5,5,7,7,9,9) and you get it via R> z <- 1:10 R> ht <- hist(z,plot=F) R> z [1] 1 2 3 4 5 6 7 8 9 10 R> ht$breaks [1] 0 2 4 6 8 10 R> ht$mids [1] 1 3 5 7 9 R> z2 <- cut(z, ht$breaks, labels = ht$mids) R> z2 [1] 1 1 3 3 5 5 7 7 9 9 Levels: 1 3 5 7 9 or if you don't want to have a factor R> as.numeric(as.character(z2)) [1] 1 1 3 3 5 5 7 7 9 9 best, Z > > Oleg > > On Mon, 29 Mar 2004, Erin Hodgess wrote: > > > Hello Oleg! > > > > Do you mean something like this, please? > > > z <- rnorm(15) > > > z > > [1] -0.36888946 0.34271755 -0.47761843 -0.58402557 0.05393014 > > 0.69234710 > > 2.04861420 1.41823938 -0.57638598 1.51090023 > > [11] -0.71616401 0.19227347 -0.19348506 -0.63082326 -0.64346621 > > > z1 <- hist(z,plot=F) > > > z1$breaks > > [1] -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 > > > table(cut(z,z1$breaks)) > > > > (-1,-0.5] (-0.5,0] (0,0.5] (0.5,1] (1,1.5] (1.5,2] > > (2,2.5] > > 5 3 3 1 1 1 > > 1 > > > > Hope this helps! > > Sincerely, > > Erin Hodgess > > Associate Professor > > Department of Computer and Mathematical Sciences > > University of Houston - Downtown > > mailto: [EMAIL PROTECTED] > > > > > > > > From: Oleg Bartunov <[EMAIL PROTECTED]> > > > > > > I have numeric vector z and I want to factorize it using z$breaks > > which I got from histograms breaks. Is there an elegant way to do > > this ? I, probably, could write a loop and check if z hits into some > > interval and replace z with value of z$mids, but I suspect there is > > more R-ish way. > > > > Regards, > > Oleg > > _____________________________________________________________ > > Oleg Bartunov, sci.researcher, hostmaster of AstroNet, > > Sternberg Astronomical Institute, Moscow University (Russia) > > Internet: [EMAIL PROTECTED], http://www.sai.msu.su/~megera/ > > phone: +007(095)939-16-83, +007(095)939-23-83 > > > > Regards, > Oleg > _____________________________________________________________ > Oleg Bartunov, sci.researcher, hostmaster of AstroNet, > Sternberg Astronomical Institute, Moscow University (Russia) > Internet: [EMAIL PROTECTED], http://www.sai.msu.su/~megera/ > phone: +007(095)939-16-83, +007(095)939-23-83 > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
