Mercurial > hg > octave-nkf
view scripts/sparse/gplot.m @ 15536:2e8eb9ac43a5 stable rc-3-6-4-0
3.6.4-rc0 release candidate
* configure.ac (AC_INIT): Version is now 3.6.2-rc0.
(OCTAVE_RELEASE_DATE): Now 2012-05-11.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Wed, 17 Oct 2012 10:05:44 -0400 |
parents | 72c96de7a403 |
children | 11949c9795a0 |
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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} {} gplot (@var{A}, @var{xy}) ## @deftypefnx {Function File} {} gplot (@var{A}, @var{xy}, @var{line_style}) ## @deftypefnx {Function File} {[@var{x}, @var{y}] =} gplot (@var{A}, @var{xy}) ## Plot a graph defined by @var{A} and @var{xy} in the graph theory ## sense. @var{A} is the adjacency matrix of the array to be plotted ## and @var{xy} is an @var{n}-by-2 matrix containing the coordinates of ## the nodes of the graph. ## ## The optional parameter @var{line_style} defines the output style for ## the plot. Called with no output arguments the graph is plotted ## directly. Otherwise, return the coordinates of the plot in @var{x} ## and @var{y}. ## @seealso{treeplot, etreeplot, spy} ## @end deftypefn function [x, y] = gplot (A, xy, line_style) if (nargin < 2 || nargin > 3 || nargout > 2) print_usage (); endif if (nargin == 2) line_style = "-"; endif [i, j] = find (A); xcoord = [xy(i,1), xy(j,1), NaN(length(i),1) ]'(:); ycoord = [xy(i,2), xy(j,2), NaN(length(i),1) ]'(:); if (nargout == 0) plot (xcoord, ycoord, line_style); else x = xcoord; y = ycoord; endif endfunction %!demo %! ## Binary Tree Representation %! A = [0 1 0 0 0 0 0 %! 1 0 1 1 0 0 0 %! 0 1 0 0 0 0 0 %! 0 1 0 0 1 0 0 %! 0 0 0 1 0 1 1 %! 0 0 0 0 1 0 0 %! 0 0 0 0 1 0 0]; %! %! xy = [1, 0 %! 1.5, 1 %! 2, 0 %! 2.5, 2 %! 3.5, 1 %! 3, 0 %! 4, 0]; %! %! clf; %! gplot (A, xy, "o-"); %! set (get (gca, ("children")), "markersize", 12); %! title ("gplot() of Binary Tree Adjacency matrix"); %% Mark graphical function as tested by demo block %!assert (1);