Mercurial > hg > octave-lyh
annotate scripts/sparse/spy.m @ 7505:f5005d9510f4
Remove dispatched sparse functions and treat in the generic versions of the functions
| author | David Bateman <dbateman@free.fr> |
|---|---|
| date | Wed, 20 Feb 2008 15:52:11 -0500 |
| parents | f084ba47812b |
| children | cadc73247d65 |
| rev | line source |
|---|---|
| 7017 | 1 ## Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, |
| 2 ## 2007 Andy Adler | |
| 7016 | 3 ## |
| 4 ## This file is part of Octave. | |
| 5164 | 5 ## |
| 7016 | 6 ## Octave is free software; you can redistribute it and/or modify it |
| 7 ## under the terms of the GNU General Public License as published by | |
| 8 ## the Free Software Foundation; either version 3 of the License, or (at | |
| 9 ## your option) any later version. | |
| 5164 | 10 ## |
| 7016 | 11 ## Octave is distributed in the hope that it will be useful, but |
| 12 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 ## General Public License for more details. | |
| 5164 | 15 ## |
| 16 ## You should have received a copy of the GNU General Public License | |
| 7016 | 17 ## along with Octave; see the file COPYING. If not, see |
| 18 ## <http://www.gnu.org/licenses/>. | |
| 5164 | 19 |
| 20 ## -*- texinfo -*- | |
| 21 ## @deftypefn {Function File} {} spy (@var{x}) | |
| 6607 | 22 ## @deftypefnx {Function File} {} spy (@dots{}, @var{markersize}) |
| 23 ## @deftypefnx {Function File} {} spy (@dots{}, @var{LineSpec}) | |
| 24 ## Plot the sparsity pattern of the sparse matrix @var{x}. If the argument | |
| 25 ## @var{markersize} is given as an scalar value, it is used to determine the | |
| 26 ## point size in the plot. If the string @var{LineSpec} is given it is | |
| 27 ## passed to @code{plot} and determines the appearance of the plot. | |
| 28 ## @seealso{plot} | |
| 5164 | 29 ## @end deftypefn |
| 30 | |
| 6607 | 31 function spy (S, varargin) |
| 32 | |
| 7125 | 33 if (nargin < 1) |
| 34 print_usage (); | |
| 35 endif | |
| 36 | |
| 6607 | 37 markersize = NaN; |
| 38 if (numel (i) < 1000) | |
| 39 LineSpec = "*"; | |
| 40 else | |
| 41 LineSpec = "."; | |
| 42 endif | |
| 43 for i = 1:length(varargin) | |
| 44 if (ischar(varargin{i})) | |
| 45 LineSpec = varargin{i}; | |
| 46 elseif (isscalar (varargin{i})) | |
| 47 markersize = varargin{i}; | |
| 48 else | |
| 49 error ("spy: expected markersize or linespec"); | |
| 50 endif | |
| 51 endfor | |
| 6446 | 52 |
|
7505
f5005d9510f4
Remove dispatched sparse functions and treat in the generic versions of the functions
David Bateman <dbateman@free.fr>
parents:
7125
diff
changeset
|
53 [i, j, s] = find (S); |
|
f5005d9510f4
Remove dispatched sparse functions and treat in the generic versions of the functions
David Bateman <dbateman@free.fr>
parents:
7125
diff
changeset
|
54 [m, n] = size (S); |
| 5164 | 55 |
| 6607 | 56 if (isnan (markersize)) |
| 57 plot (j, i, LineSpec); | |
| 6446 | 58 else |
| 6607 | 59 plot (j, i, LineSpec, "MarkerSize", markersize); |
| 6446 | 60 endif |
| 5164 | 61 |
| 6674 | 62 axis ([0, n+1, 0, m+1], "ij"); |
| 5164 | 63 |
| 64 endfunction |