Delaunay tesselation in N dimensions.
Parameters :  points : ndarray of floats, shape (npoints, ndim)


Notes
The tesselation is computed using the Qhull libary [Qhull].
New in version 0.9.
References
[Qhull]  (1, 2, 3, 4) http://www.qhull.org/ 
Attributes
transform  Affine transform from x to the barycentric coordinates c. 
vertex_to_simplex  Lookup array, from a vertex, to some simplex which it is a part of. 
convex_hull  Vertices of facets forming the convex hull of the point set. 
points  ndarray of double, shape (npoints, ndim)  Points in the triangulation. 
vertices  ndarray of ints, shape (nsimplex, ndim+1)  Indices of vertices forming simplices in the triangulation. 
neighbors  ndarray of ints, shape (nsimplex, ndim+1)  Indices of neighbor simplices for each simplex. The kth neighbor is opposite to the kth vertex. For simplices at the boundary, 1 denotes no neighbor. 
equations  ndarray of double, shape (nsimplex, ndim+2)  [normal, offset] forming the hyperplane equation of the facet on the paraboloid (see [Qhull] documentation for more). 
paraboloid_scale, paraboloid_shift  float  Scale and shift for the extra paraboloid dimension (see [Qhull] documentation for more). 
Methods
find_simplex(self, xi[, bruteforce, tol])  Find the simplices containing the given points. 
lift_points(self, x)  Lift points to the Qhull paraboloid. 
plane_distance(self, xi)  Compute hyperplane distances to the point xi from all simplices. 