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by joswig
04 May 2011, 18:22
Forum: Helpdesk
Topic: initializing incidence matrices through perl::Object
Replies: 2
Views: 4875

Re: initializing incidence matrices through perl::Object

The confusion comes from mixing two (very different) kinds of objects. Things like Polytope<Rational>, SimplicialComplex, Graph, ... are big objects which live on the Perl side with properties and rules and such. But there are also small objects which live on the C++ side, e.g., Matrix<Rational>, Ve...
by joswig
14 Apr 2011, 16:42
Forum: Helpdesk
Topic: script "tarballs" not working
Replies: 5
Views: 8946

Re: script "tarballs" not working

Actually, -O1 is quite harsh (in terms of performance). Another option (if performance does matter) build a vanilla gcc 4.3 or 4.4 from scratch and use that one.
by joswig
21 Mar 2011, 18:18
Forum: Helpdesk
Topic: Projections
Replies: 7
Views: 9687

Re: Projections

As it seems there is something terribly wrong with the installation at TU Berlin. Similar problems from there have been reported before. The current version 2.9.9 is extremely simple to install, even locally. You should try to get a correct installation.
by joswig
19 Feb 2011, 18:50
Forum: Helpdesk
Topic: check faces in simplicial complexes
Replies: 4
Views: 7264

Re: check faces in simplicial complexes

Well, you should write a short loop and check that set for containment in all facets.
by joswig
04 Feb 2011, 18:21
Forum: Helpdesk
Topic: Transparency in jreality
Replies: 5
Views: 9980

Re: Transparency in jreality

It's true, currently the jreality interface seems to treat FacetTransparency as a switch. Facet transparency is switched on no matter what the value is. It does work with the javaview interface though. A value of '0.0' means no transparency, and '1.0' is like clear glass. So a typical (working) exam...
by joswig
15 Jan 2011, 18:49
Forum: General Discussion
Topic: new introductory tutorial
Replies: 2
Views: 10790

Re: new introductory tutorial

Sure. However, for whatever reason currently I seem to be unable to add a new page.
by joswig
15 Jan 2011, 13:53
Forum: General Discussion
Topic: new introductory tutorial
Replies: 2
Views: 10790

new introductory tutorial

There is a new effort (from the Berlin group) to improve polymake's documentation. This is very welcome! Here are some comments in sequential order on the wiki page at http://www.polymake.org/doku.php/tutorial/introduction : Basic constructions: Actually, it is sort of a bad idea to use non-rational...

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