[R] density ellipses?
pflugshaupt at geobot.umnw.ethz.ch
Wed Mar 22 16:56:07 CET 2000
has anybody written a function to plot density ellipses (95%, 99% or
anything) in a scatterplot? I found nothing in any package, nor in the list
There does seem to be a contributed package "ellipse" for S-Plus (on
S-Archive), but it does a lot more than what I would need. Still, if anybody
ported it to R, I'd be grateful for a link. I'm a bit afraid to try the port
myself, since the routines do some magic with postscript preambles that I
Or is there a simple way to implement it myself? The axis directions could
be extracted from princomp, but how would one plot the ellipses?
Thanks for any tips
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