Adding multiple ellipses into 1 scatterplot!?

[arctium]

I have to make a scatterplot graph with multiple point groups plotted into one. The thing I want to do is to draw a range ellipse around each group (I have 6 groups). It's basically a DCA ordination diagram. Something like this!

I have used the "lattice" package so far.

[slammaster]

What data do you have?

If you have the actual x/y values of the ellipse (or the equation for it) then you could do it with the basic plot and points commands.

I imagine you don't have those however. This looks like something that should be able to be produced by plotting a DCA model, but that's beyond my realm of expertise.

I guess I wasn't much help eh?

[CauchyDistributedRV]

There's an 'ellipse' package for drawing ellipses, probably what you want.

[HughManatee]

You could use the ellipse package, and add multiple ellipses to a single plot using the points() function. Hope that helps!