1 ## Copyright (C) 2005-2012 Ivana Varekova
3 ## This file is part of Octave.
5 ## Octave is free software; you can redistribute it and/or modify it
6 ## under the terms of the GNU General Public License as published by
7 ## the Free Software Foundation; either version 3 of the License, or (at
8 ## your option) any later version.
10 ## Octave is distributed in the hope that it will be useful, but
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 ## General Public License for more details.
15 ## You should have received a copy of the GNU General Public License
16 ## along with Octave; see the file COPYING. If not, see
17 ## <http://www.gnu.org/licenses/>.
20 ## @deftypefn {Function File} {} gplot (@var{A}, @var{xy})
21 ## @deftypefnx {Function File} {} gplot (@var{A}, @var{xy}, @var{line_style})
22 ## @deftypefnx {Function File} {[@var{x}, @var{y}] =} gplot (@var{A}, @var{xy})
23 ## Plot a graph defined by @var{A} and @var{xy} in the graph theory
24 ## sense. @var{A} is the adjacency matrix of the array to be plotted
25 ## and @var{xy} is an @var{n}-by-2 matrix containing the coordinates of
26 ## the nodes of the graph.
28 ## The optional parameter @var{line_style} defines the output style for
29 ## the plot. Called with no output arguments the graph is plotted
30 ## directly. Otherwise, return the coordinates of the plot in @var{x}
32 ## @seealso{treeplot, etreeplot, spy}
35 function [x, y] = gplot (A, xy, line_style)
37 if (nargin < 2 || nargin > 3 || nargout > 2)
46 xcoord = [xy(i,1), xy(j,1), NaN(length(i),1) ]'(:);
47 ycoord = [xy(i,2), xy(j,2), NaN(length(i),1) ]'(:);
50 plot (xcoord, ycoord, line_style);
60 %! ## Binary Tree Representation
78 %! gplot (A, xy, "o-");
79 %! set (get (gca, ("children")), "markersize", 12);
80 %! title ("gplot() of Binary Tree Adjacency matrix");
82 %% Mark graphical function as tested by demo block