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by joswig
31 Mar 2020, 14:04
Forum: General Discussion
Topic: building SubdivisionOfPoints from C++
Replies: 5
Views: 1168

Re: building SubdivisionOfPoints from C++

I should say that

Code: Select all

perl::Object
is outdated now. In version 4.0 this was replaced by

Code: Select all

BigObject
; no perl:: anymore.

To get an idea I would recommend to look at code in polymake's source, e.g., normal_fan.cc. While that is about a different big object type, its use is similar.
by joswig
10 Mar 2020, 17:37
Forum: Helpdesk
Topic: Porting old code
Replies: 3
Views: 1273

Re: Porting old code

... I can now tell you that polymake 4.0r1 will be in Fedora 32 ...
That's excellent! thanks for your effort. -- Michael
by joswig
09 Mar 2020, 18:02
Forum: Helpdesk
Topic: Computing one interior lattice points of possibly unbounded polytopes
Replies: 3
Views: 845

Re: Computing one interior lattice points of possibly unbounded polytopes

Via SCIP (and tosimplex) polymake can solve arbitrary (mixed) integer linear programs.
Please look at the code for MIN_WEIGHTS in apps/fan/rules/subdivision.rules for an example which you can modify to your needs.
by joswig
09 Mar 2020, 17:36
Forum: Helpdesk
Topic: Computing one interior lattice points of possibly unbounded polytopes
Replies: 3
Views: 845

Re: Computing one interior lattice points of possibly unbounded polytopes

polymake 4.0 comes with a new function which solves your very problem! fan > print $HC33->MIN_WEIGHTS; polymake: used package scip SCIP - Solving Constraint Integer Programs SCIP is a solver for Mixed Integer Linear and Nonlinear Problems that allows for an easy integration of arbitrary constraints....
by joswig
30 Jan 2020, 10:55
Forum: News
Topic: polymake 4.0 released
Replies: 0
Views: 3472

polymake 4.0 released

This is to announce the release of polymake 4.0. We bumped up the version major number in order to mark a few breaking changes, which resulted in some major reshuffling behind the scenes. However, most of these will only affect the programmers among the polymake users: * Data file format switched fr...
by joswig
10 Dec 2019, 11:25
Forum: Helpdesk
Topic: Progress while computing H-representation
Replies: 3
Views: 1238

Re: Progress while computing H-representation

If you have an server with multiple cores (like 20), which algorithm can make use of this? Where do i find information on this? Again, please consult that paper ;-) There are currently two parallel convex hull codes available (that I am aware of): normaliz and lrs (in its mplrs version). The polyma...
by joswig
06 Dec 2019, 11:35
Forum: Helpdesk
Topic: Progress while computing H-representation
Replies: 3
Views: 1238

Re: Progress while computing H-representation

Questions like these appeared in this forum in several guises (and have been answered, see, e.g., https://forum.polymake.org/viewtopic.php?f=8&t=1693 ). I am aware, however, that for non-experts it may not be obvious that these questions are essentially the same. So I answer them again. 1. When I ca...
by joswig
19 Nov 2019, 14:49
Forum: News
Topic: polymake 3.6 released
Replies: 0
Views: 2664

polymake 3.6 released

This is to announce the release of polymake 3.6. This time we mainly focused on new mathematical concepts and algorithms. In particular we now have: compactifications of tropical hypersurfaces; see Kastner, Shaw and Winz, arXiv:1612.09526 (implementation by the authors) tropical Voronoi diagrams; se...
by joswig
29 Aug 2019, 10:32
Forum: News
Topic: polymake 3.5 released
Replies: 0
Views: 2824

polymake 3.5 released

This is to announce the release of polymake 3.5 . Highlights include the following: Thanks to Lars' effort there is new big object type HyperplaneArrangement in application fan. Its key algorithm allows to compute the induced cell decomposition of the surrounding Euclidean space. Moreover, there are...
by joswig
29 Aug 2019, 10:23
Forum: Helpdesk
Topic: affine dependencies of a polytope
Replies: 2
Views: 1356

Re: affine dependencies of a polytope

Yes, it works as follows. Let us take the standard square as an example. Your question is about the matroid generated by the vertices. polytope > $V=cube(2)->VERTICES; polytope > $M = new matroid::Matroid(VECTORS=>$V); polytope > print $M->BASES; {0 1 2} {0 1 3} {0 2 3} {1 2 3} Each line describes o...

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