Singular Manual: fVectorP(polymake)

  | #### D.16.2.6 fVectorP `Syntax:` `Polymake::fVectorP(` polytope p `)` `Type:` intvec `Purpose:` the f-vector of p. `Note:` the computation works via an f-vector computation of a cone whose intersection with a hyperplan yields p, hence the return might not make sense intuitively if p is not bounded. However it can be regarded as the f-vector of p in (R')^n, where R' denotes the two point compactification of R and n is the dimension of the ambient space of p. `Example:`
        LIB"polymake.lib";
      ==> Welcome to polymake version
      ==> Copyright (c) 1997-2015
      ==> Ewgenij Gawrilow, Michael Joswig (TU Darmstadt)
      ==> http://www.polymake.org
        intmat M[6][4]=1,1,1,2, 1,-1,-1,-2, 1,1,0,0, 1,-1,0,0, 1,0,1,0, 1,0,-1,0;
        polytope p = polytopeViaPoints(M);
        Polymake::fVectorP(p);
      ==> polymake: used package cdd
      ==>   cddlib
      ==>   Implementation of the double description method of Motzkin et al.
      ==>   Copyright by Komei Fukuda.
      ==>   http://www.ifor.math.ethz.ch/~fukuda/cdd_home/cdd.html
      ==>
      ==> polymake: used package ppl
      ==>   The Parma Polyhedra Library (PPL): A C++ library for convex polyhedra
      ==>   and other numerical abstractions.
      ==>   http://www.cs.unipr.it/ppl/
      ==>
      ==> 6,12,8

User manual for Singular version 4-0-3p3, 2016, generated by texi2html.