Re: [R] adding an ellipse to a PCA plot

essage- >> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] >> On Behalf Of Lukas Baitsch >> Sent: June-06-11 10:33 AM >> To: r-help@r-project.org >> Subject: [R] adding an ellipse to a PCA plot >> >> Hi, >> >> I creat

[R] adding an ellipse to a PCA plot

Hi, I created a principal component plot using the first two principal components. I used the function princomp() to calculate the scores. now, I would like to superimpose an ellipse representing the center and the 95% confidence interval of a series of points in my plot (as to illustrate the grou