[SciPy-User] Volume of convex hulls from Delaunay triangulation
Sun Oct 14 08:58:52 CDT 2012
Eric Bruning <eric.bruning <at> gmail.com> writes:
> Are there any known edge or degenerate cases with the simplex volume
> calculation in scipy.spatial's test_qhull.py (1)? Applying this method
> to my dataset, some of the volumes are negative and some are positive,
> which might just be the 3D analogue of area with a different surface
The formula needs to be divided by ndim! to get the volume, cf.,
The volume is indeed oriented, and abs() gives the actual volume.
I don't see any significant numerical caveats in the intended
volume calculation using this approach.
More information about the SciPy-User