Hello, I am stumbling over a problem when trying to compute the adjacency matrix of a graph in C++. Actually I am interested in the edges of a polytope, but - if I understand it correctly - an edge matrix itself does not exists as a subobject, but rather n alternate presentation of the adjacency mat...

Hello, this is something which actually came up quite some time ago, but I seem to have forgotten it until now: The callable library automatically prints out a banner of every external library it uses, upon the first time you are using it. However, there is no way of obtaining a polymake banner (inc...

thanks for the quick reply, I see where me error was.

Hi, I am trying to use some of Polymake's ilp routines through the callable library functionality, but I get an error message which I don't really tells me anything. This is the piece of code I try to get working: #include <polymake/Main.h> #include <polymake/Matrix.h> #include <polymake/SparseMatri...

thanks, words like a charm!

Hello, I am a little bit stuck in understanding your implementation of incidence matrices. Correct me if I am wrong, but it seems to me that an incidence matrix, say {0,1} {0,2}, is internally stored as something alike a 2x3 matrix of the form 1 1 0 1 0 1 where each row corresponds to a set, each co...

Ah, sorry. I total forgot that I haven't replied yet.

Thank you for the answer, that solves my problem.

Hello, I have a problem with initializing incidence matrices through perl::Object. The following line of code: perl::Object q("IncidenceMatrix"); sometimes causes following Error Message during execution: ERROR: Can't use string ("") as a subroutine ref while "strict refs&qu...