|
2313
|
1 ## Copyright (C) 1996 John W. Eaton |
|
|
2 ## |
|
|
3 ## This file is part of Octave. |
|
|
4 ## |
|
|
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 2, or (at your option) |
|
|
8 ## 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. |
|
|
14 ## |
|
|
15 ## You should have received a copy of the GNU General Public License |
|
|
16 ## along with Octave; see the file COPYING. If not, write to the Free |
|
|
17 ## Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
|
|
18 ## 02111-1307, USA. |
|
1024
|
19 |
|
2311
|
20 ## Set the current colormap. |
|
2325
|
21 ## |
|
2311
|
22 ## colormap (map) sets the current colormap to map. map should be an n |
|
|
23 ## row by 3 column matrix. The columns contain red, green, and blue |
|
|
24 ## intensities respectively. All entries should be between 0 and 1 |
|
|
25 ## inclusive. The new colormap is returned. |
|
2325
|
26 ## |
|
2311
|
27 ## colormap ("default") restores the default colormap (a gray scale |
|
|
28 ## colormap with 64 entries). The default colormap is returned. |
|
2325
|
29 ## |
|
2311
|
30 ## colormap with no arguments returns the current colormap. |
|
559
|
31 |
|
2312
|
32 ## Author: Tony Richardson <amr@mpl.ucsd.edu> |
|
|
33 ## Created: July 1994 |
|
|
34 ## Adapted-By: jwe |
|
904
|
35 |
|
2312
|
36 function cmap = colormap (map) |
|
559
|
37 |
|
|
38 global CURRENT_COLOR_MAP |
|
|
39 |
|
1062
|
40 if (nargin > 1) |
|
|
41 usage ("colormap (map)"); |
|
|
42 endif |
|
559
|
43 |
|
1024
|
44 if (nargin == 1) |
|
|
45 if (isstr (map)) |
|
|
46 if (strcmp (map, "default")) |
|
559
|
47 CURRENT_COLOR_MAP = gray; |
|
|
48 else |
|
1024
|
49 error ("invalid argument"); |
|
559
|
50 endif |
|
|
51 else |
|
2303
|
52 ## Set the new color map |
|
559
|
53 CURRENT_COLOR_MAP = map; |
|
|
54 endif |
|
1062
|
55 elseif (! exist ("CURRENT_COLOR_MAP")) |
|
2303
|
56 ## If global color map doesn't exist, create the default map. |
|
559
|
57 CURRENT_COLOR_MAP = gray; |
|
|
58 endif |
|
|
59 |
|
2303
|
60 ## Return current color map. |
|
1024
|
61 |
|
559
|
62 cmap = CURRENT_COLOR_MAP; |
|
1024
|
63 |
|
559
|
64 endfunction |
