Hello, I've a question concerning the display of interval data.
A sample dataset where X is an interval between Xa and Xb which should be displayed: Y=c(15,14,23,18,19,9,19,13) Xa=c(17,22,21,18,19,25,8,19) Xb=c(22,22,29,34,19,26,17,22) X = (Xa+Xb)/2 It's easily possible to plot the mean of the interval like: plot(X,Y) afterwards I can create lines for the interval with: segments(Xa,Y,Xb,Y) I think that explains roughly what I'd like to do. Now some questions: 1) How can I display the segments only? without the points? 2) I'd like only to have points where the range (Xa-Xb) = 0, because otherwise nothing would be displayed in such cases. 3) How can I color (grey scale) the interval-segments according to their range? Lets say the wider the range (Xa-Xb) the brighter (the more white)and the narrower the darker (more black)? 4) Is there a special R-package or function besides for plotting interval, or ranging data? Thanks /johannes -- ______________________________________________ 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.
