update packages

[CreaPhase.git] / octave_packages / m / sparse / etreeplot.m

diff --git a/octave_packages/m/sparse/etreeplot.m b/octave_packages/m/sparse/etreeplot.m
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+## Copyright (C) 2005-2012 Ivana Varekova
+##
+## This file is part of Octave.
+##
+## Octave 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 3 of the License, or (at
+## your option) any later version.
+##
+## Octave 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.
+##
+## You should have received a copy of the GNU General Public License
+## along with Octave; see the file COPYING.  If not, see
+## <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn  {Function File} {} etreeplot (@var{A})
+## @deftypefnx {Function File} {} etreeplot (@var{A}, @var{node_style}, @var{edge_style})
+## Plot the elimination tree of the matrix @var{A} or
+## @xcode{@var{A}+@var{A}'} if @var{A} in not symmetric.  The optional
+## parameters @var{node_style} and @var{edge_style} define the output
+## style.
+## @seealso{treeplot, gplot}
+## @end deftypefn
+
+function etreeplot (A, varargin)
+
+  if (nargin < 1)
+    print_usage ();
+  endif
+
+  treeplot (etree (A+A'), varargin{:});
+endfunction