There are two issues. (1) There is a small glitch in polymake's design of subobject properties (such as LP or MILP). The following works: > $x = lp2poly("untitled.lp"); > $obj= new Vector([1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1]); > $x->MILP(LINEAR_...

There is no actual support of matrix groups in polymake. Our groups are usually permutation groups. There is only some very limited functionality to convert between matrices and permutations. If you need the full strength of matrix groups (and polyhedral geometry) you should use Oscar , which will b...

That polyhedron is unbounded; so the function says it cannot count the lattice points. Notice the extra inequality "1 0 0" (which amounts to 1 >= 0) that was added by polymake to your input. This is useful for combinatorial reasons: https://polymake.org/doku.php/user_guide/tutorials/coordi...

Does this also happen with julia-1.6?

https://julialang.org/downloads/

Please send your full input and output, at least for a minimal example which exhibits the problem.

The following variant of the tutorial code is more generic and thus probably even better suited for your needs: polymake 'my $c=load("c3.poly"); print "$_\n", $c->$_, "\n\n" for "N_VERTICES", "N_FACETS";' You can add as many properties as you like.

Please give more details: which polymake version on which operating system are you running? Which visualization backend?

Also please give the entire sequence of commands leading to the error.

Yes, inequalities and equalities are kept seperate. You can use them in the way you described as input (by specifying INEQUALITIES and maybe EQUATIONS), but FACETS and AFFINE_HULL give irredundant output.

I am glad you found something useful in polymake. Let me point out that polymake scripts differ slightly from general perl scripts. They should start out with something like use application "polytope"; to set the scope (i.e., the active application). polymake's determinant function lives i...

Is there a way to tell polymake to use the polymake det function? This is impossible to answer without seeing your script. I do not know about pdl. That is, if you would post that script, it might require a bit of explanation. If not, is there is an efficient way to compute the multiplicity of a se...