#10943: Fan morphism fails on not full-dimensional fans
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Reporter: novoselt | Owner: mhampton
Type: defect | Status: new
Priority: major | Milestone: sage-4.7
Component: geometry | Keywords:
Author: Andrey Novoseltsev | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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For example:
{{{
sage: Sigma = Fan(rays=[(1,1,0), (1,-1,0)], cones=[(0,1)])
sage: Sigma_prime = FaceFan(lattice_polytope.octahedron(3))
sage: FanMorphism(identity_matrix(3), Sigma, Sigma_prime, subdivide=True,
verbose=True)
Placing ray images... 0.841 ms
Computing chambers... 0.806 ms
Subdividing cone 1 of 1... 0.172 ms
Checking for missing pieces...
Traceback (most recent call last):
...
IndexError: list assignment index out of range
}}}
The problem is that the source cone intersects four target ones, but there
are only two different intersections. I will post a fix soon.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10943>
Sage <http://www.sagemath.org>
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