[R] Finding convex hull?

[Dong-hyun Oh]

Dear UseRs,

I would like to know which function is the most efficient in finding  
convex hull of points in 3(or 2)-dimensional case?

Functions for finding convex hull is the following:
convex.hull (tripack), chull (grDevices), in.chull (sgeostat),  
convhulln (geometry), convexhull.xy (spatstat), calcConvexHull  
(PBSmapping).

I also would like to know if there is a function that can be used for  
finding convex hull in multi-dimensional case, that is more than 3- 
dimension.

Thank you in advance.