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# Copyright (c) 1997-2024
# Ewgenij Gawrilow, Michael Joswig, and the polymake team
# Technische Universität Berlin, Germany
# https://polymake.org
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any
# later version: http://www.gnu.org/licenses/gpl.txt.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#-------------------------------------------------------------------------------
# script copied from FAQ
# usage: polymake --script print_face_lattice FILE.poly
use application 'polytope';
my $file=shift;
my $p=is_object($file) ? $file : load($file);
my $HD=$p->HASSE_DIAGRAM;
my $dim=$HD->dim;
for (my $d=0; $d<=$dim; ++$d) {
print "DIM=$d\n";
foreach my $n (@{$HD->nodes_of_dim($d)}) {
print "$n: ", $HD->FACES->[$n], "\n";
}
}
# Local Variables:
# mode: perl
# c-basic-offset:3
# End:
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