Thank you Steve, thats the thing I was looking for....
/Johannes -------- Original-Nachricht -------- > Datum: Thu, 3 May 2012 08:20:51 -0400 > Von: "Steven Wolf" <wolfs...@msu.edu> > An: "\'David Winsemius\'" <dwinsem...@comcast.net>, "\'Johannes Radinger\'" > <jradin...@gmx.at> > CC: R-help@r-project.org > Betreff: RE: [R] Two ecdf with log-scales > I've done it this way before: > > eX -> ecdf(distribution 1) > eY -> ecdf(distribution 2) > par(mar=c(5,5,2,1),xlog=TRUE) > plot(eX, do.points=FALSE, verticals=TRUE, col="black", xlab=xlabel, > xlim=c(1,100000), ylab=ylabel, > lty=1, cex.lab=1.5, cex.axis=1.5, main="", > lwd=3,log="x") > plot(eY, do.points=FALSE, verticals=TRUE, col="blue", add=TRUE, > xlim=c(1,100000), main="") > > Warning: It makes a stair-step that may be difficult to see unless you > use > color. I had to change how the ecdf was plotted when I made b/w figures > for > my publication so that different dashed lines were distinct. > > HTH, > -Steve > > -----Original Message----- > From: David Winsemius [mailto:dwinsem...@comcast.net] > Sent: Wednesday, May 02, 2012 10:17 AM > To: Johannes Radinger > Cc: R-help@r-project.org > Subject: Re: [R] Two ecdf with log-scales > > > On May 2, 2012, at 6:14 AM, Johannes Radinger wrote: > > > Hi, > > > > i want to plot empirical cumulative density functions for two > > variables in one plot. For better visualizing the differences in the > > two cumulative curves I'd like to log-scale the axis. > > > > So far I found 3 possible functions to plot ecdf: > > > > 1) ecdf() from the package 'stats'. I don't know how to successfully > > set the log.scales? Combining two plots is not a problem: > > > > plot(ecdf(x1)) > > lines(ecdf(x2),col.h="red") > > > > 2) gx.ecdf() from package 'rgr'. It is easily possible to plot log- > > scales, but I don't know how to plot two densities? > > > > gx.ecdf(x1,log=TRUE,ifqs = TRUE) > > > > 3) Ecdf() from package 'Hmisc'. No log-option directly available and > > here I also don't know how to 'stack' two plots... > > > > Ecdf(x1,what="F") > > > > > > Probably there are many more solutions (e.g. ggplot etc.)... > > ...Has anyone faced a similar task and found a simple solution? Any > > suggestions are welcome! > > Have you searched the Archives? I seem to remember that the log(0) was a > barrier to persons attempting this in the past. (ISTR a posting in the > last > few weeks.) Maybe you could also provide a test data object that has the > same range as your x1 and x 2 variables. > > > and provide commented, minimal, self-contained, reproducible code. > > -- > > David Winsemius, MD > West Hartford, CT > > > -- Jetzt informieren: http://mobile.1und1.de/?ac=OM.PW.PW003K20328T7073a ______________________________________________ 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.