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by gawrilow
19 Jun 2021, 00:04
Forum: Installing polymake
Topic: polymake on FreeBSD -- some questions and help needed
Replies: 10
Views: 356

Re: polymake on FreeBSD -- some questions and help needed

PREFIX determines where the port will be installed, by default it's set to /usr/local. On FreeBSD, DESTDIR specifies a complete alternative environment, which might be a jail or a complete system mounted somewhere other than /. The actual location a port installs to is therefore DESTDIR/PREFIX. I n...
by gawrilow
18 Jun 2021, 12:15
Forum: Installing polymake
Topic: polymake on FreeBSD -- some questions and help needed
Replies: 10
Views: 356

Re: polymake on FreeBSD -- some questions and help needed

Hi, since Ben has already perfectly explained almost everything, I'd just like to provide some details. installation paths Out of the box, polymake is not relocatable after the installation: It must know where to find its components (application modules, rule files, etc.) The locations are configure...
by gawrilow
19 May 2021, 23:37
Forum: Installing polymake
Topic: Perl version doesn't match after Mac 11.3 update (Intel chip)
Replies: 3
Views: 713

Re: Perl version doesn't match after Mac 11.3 update (Intel chip)

If you execute

Code: Select all

show_unconfigured;
in the polymake shell, it will tell you what exactly is missing. Most probably, you got this message also before the perl upgrade, because interfaces to third-party software usually do not depend on exact perl version.
by gawrilow
06 May 2021, 11:44
Forum: Helpdesk
Topic: How to define Matrix Group from generators?
Replies: 3
Views: 447

Re: How to define Matrix Group from generators?

In perl, an array should be passed by reference, otherwise it's unrolled into single elements passed separately to the function. Just add a backslash: orbit(\@a,$v); Regarding the group: I'd naively expect it as a regular subobject $p->GROUP. Actually, the true group experts among us should give mor...
by gawrilow
17 Apr 2021, 02:40
Forum: Helpdesk
Topic: Trouble interpreting the output (facets of a polytope)
Replies: 6
Views: 594

Re: Trouble interpreting the output (facets of a polytope)

Can I please know when should I accept the next release? This will be announced on the News page of this very website. There is no fixed release date decided yet, but it should happen in a rather short term, I reckon. Is there any other way I can transform these facets into my original variables? Y...
by gawrilow
14 Apr 2021, 00:38
Forum: Helpdesk
Topic: Trouble interpreting the output (facets of a polytope)
Replies: 6
Views: 594

Re: Trouble interpreting the output (facets of a polytope)

Theoretically, you could use the opposite conversion function, 'poly2lp'. In reality, however, it won't work for you right now, because your LP is in fact a MILP, which recently became a separate data type in polymake. But we forgot to extend 'poly2lp' to cover both types of linear programs. This is...
by gawrilow
28 Mar 2021, 14:00
Forum: Helpdesk
Topic: Manipulation of Schlegel diagrams
Replies: 4
Views: 558

Re: Manipulation of Schlegel diagrams

There is apparently a bug which went unnoticed for years - you are the first user asking for these vertices explicitly :shock: . So far they were only temporarily created when such visualizations were asked for. While we'll being investigating and fixing it for the next due release, you can help you...
by gawrilow
27 Mar 2021, 22:59
Forum: Helpdesk
Topic: Manipulation of Schlegel diagrams
Replies: 4
Views: 558

Re: Manipulation of Schlegel diagrams

Coordinates (affine, not projective!) are available under $p->SCHLEGEL_DIAGRAM->VERTICES.
The edges are just the 1-skeleton, $p->GRAPH->EDGES.
by gawrilow
10 Mar 2021, 10:51
Forum: Helpdesk
Topic: Error in reading a .lp file using lp2poly
Replies: 6
Views: 1418

Re: Error in reading a .lp file using lp2poly

We should eventually teach the LP input parser to cope with all valid Unicode characters, not only with ASCII. After all, the names of variables and constraints are pure labels used for text output and nothing else, we should not impose any unnecessary restrictions on them.
by gawrilow
03 Mar 2021, 00:11
Forum: Helpdesk
Topic: Visualization using Ubuntu
Replies: 6
Views: 2856

Re: Visualization using Ubuntu

Due to an editing mishap, the page where the workaround script is presented was referring to a wrong file. The instructions have been corrected. Please have a try. Sorry for the mistake!

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