Please chk out the url below it might be of some help for plotting step function or *look like* of step function.
On Thu, 27 Mar 2008 09:03:58 -0400 wrote: > Thanks to David and Zaihra for their help. > > Besides plotting the difference between 2 ecdfs, I also would like it to > *look like* a step function. Any suggestion? > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > On Behalf Of David Winsemius > Sent: Friday, March 21, 2008 8:51 PM > To: [EMAIL PROTECTED] > Subject: Re: [R] difference between 2 ecdfs > > In article > <[EMAIL PROTECTED]>, > wrote: > > > hi, > > > > a) i have something like: >! ; > > > ecdfgrp1<-ecdf(subset(mydata,TMT_GRP==1)$Y); > > > > ecdfgrp2<-ecdf(subset(mydata,TMT_GRP==2)$Y); > > > > how can i plot the difference between these 2 step functions? > > > > i could begin with ecdfrefl<-function(x){ecdfgrp2(x)-ecdfgrp1(x);} ... > > what next? > > > #not tested ...mydata not provided > > ecrange<-range(mydata$Y) > > plot(ecdfrefl(seq(from=ecrange[1],to=ecrange[2],by=0.2)) > > > > b) if i have a vector with repeated numeric values how can i get the > > subset without repeated values .e.g (0,4,0,2,2) ----> (0,4,2) ? > > > > ?unique > > > ttt<-c(1,3,5,5,5,7) > > unique(ttt) > [1] 1 3 5 7 > > -- > David Winsemius > > ________! ______________________________________ > 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. ______________________________________________ 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.
