Vishal <vishalps <at> gmail.com> writes: > > I have a matrix(3000x2) of numbers and I have plotted a scatterplot > (defined in the ``car'' library.) > > scatterplot(r$V1,r$V2,ellipse=TRUE) > > The ellipse plotted is an error ellipse. > > I want the find the major(semi), minor(semi) minor axis length of this > ellipse.
> If you have the ellipse from cov.trob(), then you could do like this sqrt(eigen(cov.trob(mydataforellipse)$cov)$values) Cheers, Jari Oksanen ______________________________________________ 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.
