On 2009.06.20 16:04:21, Alexandru T Codilean wrote: > > Dear All, > > I have a data set with the following structure: > > [A], [a], [B], [b] > > where [A] and [B] are measurements and [a] and [b] are the associated > uncertainties. I produce [B]/[A] vs. [A] plots in R and would like to > show uncertainties as error ellipses (rather than error bars). Would > this be relatively easy to do in R? > > I would appreciate any help on this > Thanks a lot > > Tibi
The car package has an Ellipses function that draws elliptical confidence intervals for estimated model parameters. It's not exactly what you want, but the code may help you create your own function. Cheers, ~Jason -- Jason W. Morgan Graduate Student Department of Political Science *The Ohio State University* 154 North Oval Mall Columbus, Ohio 43210 ______________________________________________ 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.
