[R] weighted Voronoi diagrams

[Tuomas Aakala]

Dear R-users,

Does anyone know how to do weighted Voronoi diagrams (Dirichlet 
tesselation) in R? To be more specific, I have a set of coordinates for 
tree locations on a plot, and I'm looking for a way to do the 
tesselation so that the polygon size for each tree depends on the size 
of the subject tree, and the size of its neighbors. So, the location of 
the bisection between two trees would not necessarily be at the 
midpoint, but determined by the tree sizes. I have looked through the 
options in tripack and deldir-packages, but editing the functions in 
those packages is beyond my skills.

Thanks,

Tuomas