Re: [R] Concentration ellipsoid

On 06/09/2009 6:08 AM, RON70 wrote: In the mean time, i have found one package "ellipse" to do the same. The syntax is : plot(ellipse(Sigma), type='l') However I am still struggling on how to use "qplot" (in GGPLOT2) to draw above plot. I want to get some stylish view for my presentation prepar

Re: [R] Concentration ellipsoid

In the mean time, i have found one package "ellipse" to do the same. The syntax is : plot(ellipse(Sigma), type='l') However I am still struggling on how to use "qplot" (in GGPLOT2) to draw above plot. I want to get some stylish view for my presentation preparation. Any help please? Thanks, R

[R] Concentration ellipsoid

Hi all, Can anyone please guide me how to draw a Concentration ellipsoid for a bivariate system with a bivariate normal dist. having a VCV matrix : Sigma <- matrix(c(1,2,2,5), 2, 2) I would like to draw in using GGPLOT. Your help will be highly appreciated. Thanks, -- View this message in co