[R] how to draw the probability ellipse circle figure?

Ben Bolker bolker at ufl.edu
Wed Jun 9 19:28:54 CEST 2010

Jie TANG <totangjie <at> gmail.com> writes:

> hi ,R user folks .
> Nowadays I read a paper which draw a probability ellipse circle  figure
> shown in the appendix.
>  I wonder how to draw this figure by R ?
> the x-axis and y-axis both express the error but in different direction .

  Your question is quite vague, but perhaps you might start with the
ellipse package.  Also try


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