[SciPy-User] scipy.spatial.Delaunay.convex_hull problelm

Dan Richards D.Richards@mmu.ac...
Sat Feb 4 04:48:22 CST 2012

Hi All,

I have been using scipy to find the Delaunay tetrahedron of a set of points in three-dimensions. However, now I wish to only generate the external faces of the tetrahedron. I assume this can be done using scipy.spatial.Delaunay.convex_hull?

For my three-dimensional tetrahedron I am using this:

import scipy
from scipy import spatial

Points = ([x1,y1,z1], [x2,y2,z2]...[xn,yn,zn])
Del = scipy.spatial.Delaunay(Points)

faces = []
v = x.vertices
for i in xrange(x.nsimplex):

for i in faces:

This allows me to create a three-dimensional tetragedron. I had thought to find the 3D convex hull could simply change either:  "v = x.verticies" into "v=x.convex_hull" ; or "Del =  scipy.spatial.Delaunay (Points)" into "Del = scipy.spatial.Delaunay.convex_hull(Points)".However, neither of these have worked as planned?

If anyone is able to give me some advice or simply point me in the right direction that would be much appreciated.


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