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D.13.2.49 nBoundaryLatticePoints
Procedure from library polymake.lib (see polymake_lib).
- Usage:
- nBoundaryLatticePoints(p); p polytope
- Assume:
- isBounded(p)==1
- Return:
- int, the number of lattice points in the relative boundary 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[3][3]=
1,2,-1,
1,-1,2,
1,-1,-1;
polytope p = polytopeViaPoints(M);
nBoundaryLatticePoints(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 latte
==> LattE (Lattice point Enumeration) is a computer software dedicated to t\
he
==> problems of counting lattice points and integration inside convex polyt\
opes.
==> Copyright by Matthias Koeppe, Jesus A. De Loera and others.
==> http://www.math.ucdavis.edu/~latte/
==>
==> 9
intmat N[2][3]=
1,2,0,
1,0,2;
polytope q = polytopeViaPoints(N);
nBoundaryLatticePoints(q);
==> 2
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