CGAL users discussion list

[Matthieu Chavent <>]

Hello cgal users!

I performed a convex hull of a set a 3D points. I know that the set of 
points define a convex volume. I use the function CGAL::convex_hull_3 on 
my points list. I  obtain a Polyhedron_3 in almost cases but one time a 
have the error message:

CGAL error: postcondition violation!
Expr: is_strongly_convex_3(P, traits)
File: /home/Chavent_Matthieu/CGAL-3.2.1/include/CGAL/convex_hull_3.h
Line: 468
Aborted (core dumped)

It is very strange because I know that the sets of points that form the 
Polyhedron define a convex volume: So, I would like to know if somebody 
had the same problem and How can I get through this error.

Thank you in advance!


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Matthieu Chavent
LORIA
PhD student

tel: ++33(0)3-54-95-86-05

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