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comparison scripts/sparse/gplot.m @ 11471:994e2a93a8e2

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Use uppercase 'A' to refer to matrix inputs in m-files.
author Rik <octave@nomad.inbox5.com>
date Sun, 09 Jan 2011 16:01:05 -0800
parents be55736a0783
children fd0a3ac60b0e
comparison
equal deleted inserted replaced
11470:eb9e0b597d61 11471:994e2a93a8e2
15 ## You should have received a copy of the GNU General Public License 15 ## You should have received a copy of the GNU General Public License
16 ## along with Octave; see the file COPYING. If not, see 16 ## along with Octave; see the file COPYING. If not, see
17 ## <http://www.gnu.org/licenses/>. 17 ## <http://www.gnu.org/licenses/>.
18 18
19 ## -*- texinfo -*- 19 ## -*- texinfo -*-
20 ## @deftypefn {Function File} {} gplot (@var{a}, @var{xy}) 20 ## @deftypefn {Function File} {} gplot (@var{A}, @var{xy})
21 ## @deftypefnx {Function File} {} gplot (@var{a}, @var{xy}, @var{line_style}) 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}) 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 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 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 25 ## and @var{xy} is an @var{n}-by-2 matrix containing the coordinates of
26 ## the nodes of the graph. 26 ## the nodes of the graph.
27 ## 27 ##
30 ## directly. Otherwise, return the coordinates of the plot in @var{x} 30 ## directly. Otherwise, return the coordinates of the plot in @var{x}
31 ## and @var{y}. 31 ## and @var{y}.
32 ## @seealso{treeplot, etreeplot, spy} 32 ## @seealso{treeplot, etreeplot, spy}
33 ## @end deftypefn 33 ## @end deftypefn
34 34
35 function [x, y] = gplot (a, xy, line_style) 35 function [x, y] = gplot (A, xy, line_style)
36 36
37 if (nargin < 2 || nargin > 3 || nargout > 2) 37 if (nargin < 2 || nargin > 3 || nargout > 2)
38 print_usage (); 38 print_usage ();
39 endif 39 endif
40 40
41 if (nargin == 2) 41 if (nargin == 2)
42 line_style = "-"; 42 line_style = "-";
43 endif 43 endif
44 44
45 [i, j] = find (a); 45 [i, j] = find (A);
46 xcoord = [xy(i,1), xy(j,1), NaN(length(i),1) ]'(:); 46 xcoord = [xy(i,1), xy(j,1), NaN(length(i),1) ]'(:);
47 ycoord = [xy(i,2), xy(j,2), NaN(length(i),1) ]'(:); 47 ycoord = [xy(i,2), xy(j,2), NaN(length(i),1) ]'(:);
48 48
49 if (nargout == 0) 49 if (nargout == 0)
50 plot (xcoord, ycoord, line_style); 50 plot (xcoord, ycoord, line_style);