[R] how to plot equalprobable error ellipse?

[David Winsemius]

On Feb 23, 2011, at 10:06 PM, Jie TANG wrote:

> hi,R users,
>  Now  I have some scatter figures, is there some method can plot  
> equalprobable
> error ellipse ?

Consider searching?

http://search.r-project.org/cgi-bin/namazu.cgi?query=ellipse+density+2d&max=100&result=normal&sort=score&idxname=functions&idxname=Rhelp08&idxname=Rhelp10&idxname=Rhelp02

http://search.r-project.org/cgi-bin/namazu.cgi?query=ellipse+quantile&max=100&result=normal&sort=score&idxname=functions&idxname=Rhelp08&idxname=Rhelp10&idxname=Rhelp02

??"density 2d" geom_density2d{ggplot2}

also look a:

kde2d{MASS}, bkde2D{KernSmooth}, contourplot{lattice}

--

David Winsemius, MD
West Hartford, CT