Mercurial > hg > octave-nkf
annotate scripts/sparse/gplot.m @ 11587:c792872f8942
all script files: untabify and strip trailing whitespace
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Thu, 20 Jan 2011 17:35:29 -0500 |
| parents | fd0a3ac60b0e |
| children | 71ce008332e2 |
| rev | line source |
|---|---|
| 11523 | 1 ## Copyright (C) 2005-2011 Ivana Varekova |
| 5576 | 2 ## |
| 7016 | 3 ## This file is part of Octave. |
| 5576 | 4 ## |
| 7016 | 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. | |
| 9 ## | |
| 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. | |
| 5576 | 14 ## |
| 15 ## You should have received a copy of the GNU General Public License | |
| 7016 | 16 ## along with Octave; see the file COPYING. If not, see |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 5576 | 18 |
| 19 ## -*- texinfo -*- | |
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11471
994e2a93a8e2
Use uppercase 'A' to refer to matrix inputs in m-files.
Rik <octave@nomad.inbox5.com>
parents:
10793
diff
changeset
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20 ## @deftypefn {Function File} {} gplot (@var{A}, @var{xy}) |
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994e2a93a8e2
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Rik <octave@nomad.inbox5.com>
parents:
10793
diff
changeset
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21 ## @deftypefnx {Function File} {} gplot (@var{A}, @var{xy}, @var{line_style}) |
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994e2a93a8e2
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Rik <octave@nomad.inbox5.com>
parents:
10793
diff
changeset
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22 ## @deftypefnx {Function File} {[@var{x}, @var{y}] =} gplot (@var{A}, @var{xy}) |
| 5577 | 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. | |
| 5576 | 27 ## |
| 5577 | 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} | |
| 31 ## and @var{y}. | |
| 5642 | 32 ## @seealso{treeplot, etreeplot, spy} |
| 5576 | 33 ## @end deftypefn |
| 34 | |
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11471
994e2a93a8e2
Use uppercase 'A' to refer to matrix inputs in m-files.
Rik <octave@nomad.inbox5.com>
parents:
10793
diff
changeset
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35 function [x, y] = gplot (A, xy, line_style) |
| 5576 | 36 |
| 37 if (nargin < 2 || nargin > 3 || nargout > 2) | |
| 6046 | 38 print_usage (); |
| 5576 | 39 endif |
| 40 | |
| 41 if (nargin == 2) | |
| 6746 | 42 line_style = "-"; |
| 5576 | 43 endif |
| 44 | |
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11471
994e2a93a8e2
Use uppercase 'A' to refer to matrix inputs in m-files.
Rik <octave@nomad.inbox5.com>
parents:
10793
diff
changeset
|
45 [i, j] = find (A); |
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10547
af55e4a499e4
Fix parsing error when NaN used inside of matrix declaration
Rik <code@nomad.inbox5.com>
parents:
10540
diff
changeset
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46 xcoord = [xy(i,1), xy(j,1), NaN(length(i),1) ]'(:); |
|
af55e4a499e4
Fix parsing error when NaN used inside of matrix declaration
Rik <code@nomad.inbox5.com>
parents:
10540
diff
changeset
|
47 ycoord = [xy(i,2), xy(j,2), NaN(length(i),1) ]'(:); |
| 5576 | 48 |
| 49 if (nargout == 0) | |
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11587
c792872f8942
all script files: untabify and strip trailing whitespace
John W. Eaton <jwe@octave.org>
parents:
11523
diff
changeset
|
50 plot (xcoord, ycoord, line_style); |
| 5576 | 51 else |
| 52 x = xcoord; | |
| 53 y = ycoord; | |
| 54 endif | |
| 55 | |
| 56 endfunction |