[R] Simplex Density Plots

[Duncan Murdoch]

On 07/12/2009 11:12 PM, Graham Neubig wrote:
> Hello,
> 
> I have just started using R, and have found it quite easy to make
> plots of probability densities for normal and beta distributions, etc.
> 
> Now, I'm looking at trying to make a simplex plot of a Dirichlet
> density, but have gotten stuck and was hoping that someone could help.
> Ideally, the plot would look something like the 3d plots on Wikipedia here:
> http://en.wikipedia.org/wiki/File:Dirichlet_distributions.png
> 
> Although if these are impossible, a color-coded 2d simplex would work as well.
> 
> Does anyone have an idea or link about how to make simplex plots?

RSiteSearch("simplex") turns up some simplex plots in the klaR package; 
I don't know if they're the sort you want.

Duncan Murdoch