#16625: Schlegel doesn't work for all polytopes
------------------------+----------------------------
Reporter: kcrisman | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.3
Component: geometry | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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In comments for [http://ask.sagemath.org/question/23223
/projection_direction-broken-for-polytopes/ this ask.sagemath question],
we see that
{{{
sage: P8 = polytopes.n_cube(4)
sage: P8.schlegel([2,5,11,17])
AttributeError: 'Polyhedra_ZZ_ppl_with_category.element_class' object has
no attribute 'schlegel'
}}}
while for polytopes defined over `QQ` this isn't a problem. The
documentation for polytope plotting doesn't seem to indicate this, other
than a mysterious and ill-placed
[http://www.sagemath.org/doc/reference/geometry/sage/geometry/polyhedron/plot.html#sage.geometry.polyhedron.plot.Projection.tikz
todo in the tikz method], which might not even be related.
----
On a related note, from the same question, the two following should be
different, but aren't. This is a different bug; apparently it used to
work.
{{{
poly = polytopes.twenty_four_cell()
poly.show()
poly.show(projection_direction=[2,5,11,17])
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/16625>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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