annotate scripts/image/spring.m @ 14640:b9c02ee24de1

new colormap options * colormap.m: New options, list, register, and unregister. * NEWS: Note new colormap options. * autumn.m, bone.m, cool.m, copper.m, flag.m, gmap40.m, gray.m, hot.m, hsv.m, jet.m, lines.m, ocean.m, pink.m, prism.m, rainbow.m, spring.m, summer.m, winter: Always size and return 0x3 when size < 1. Include PKD_ADD and PKG_DEL commands to register and unregister colormap funtions.
author Carnë Draug <carandraug+dev@gmail.com>
date Wed, 16 May 2012 16:52:08 -0400
parents f205d0074687
children 5f1d4def40e1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
14138
72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
parents: 11587
diff changeset
1 ## Copyright (C) 1999-2012 Kai Habel
6788
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
2 ##
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
3 ## This file is part of Octave.
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
4 ##
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
5 ## Octave is free software; you can redistribute it and/or modify it
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
6 ## under the terms of the GNU General Public License as published by
7016
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6791
diff changeset
7 ## the Free Software Foundation; either version 3 of the License, or (at
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6791
diff changeset
8 ## your option) any later version.
6788
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
9 ##
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
10 ## Octave is distributed in the hope that it will be useful, but
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
13 ## General Public License for more details.
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
14 ##
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
15 ## You should have received a copy of the GNU General Public License
7016
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6791
diff changeset
16 ## along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6791
diff changeset
17 ## <http://www.gnu.org/licenses/>.
6788
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
18
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
19 ## -*- texinfo -*-
11420
466ba499eff5 Update docstrings for colormap files.
Rik <octave@nomad.inbox5.com>
parents: 9751
diff changeset
20 ## @deftypefn {Function File} {@var{map} =} spring ()
466ba499eff5 Update docstrings for colormap files.
Rik <octave@nomad.inbox5.com>
parents: 9751
diff changeset
21 ## @deftypefnx {Function File} {@var{map} =} spring (@var{n})
466ba499eff5 Update docstrings for colormap files.
Rik <octave@nomad.inbox5.com>
parents: 9751
diff changeset
22 ## Create color colormap. This colormap varies from magenta to yellow.
11587
c792872f8942 all script files: untabify and strip trailing whitespace
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
23 ## The argument @var{n} must be a scalar.
11420
466ba499eff5 Update docstrings for colormap files.
Rik <octave@nomad.inbox5.com>
parents: 9751
diff changeset
24 ## If unspecified, the length of the current colormap, or 64, is used.
6788
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
25 ## @seealso{colormap}
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
26 ## @end deftypefn
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
27
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
28 ## Author: Kai Habel <kai.habel@gmx.de>
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
29
14640
b9c02ee24de1 new colormap options
Carnë Draug <carandraug+dev@gmail.com>
parents: 14279
diff changeset
30 ## PKG_ADD: colormap ("register", "spring");
b9c02ee24de1 new colormap options
Carnë Draug <carandraug+dev@gmail.com>
parents: 14279
diff changeset
31 ## PKG_DEL: colormap ("unregister", "spring");
b9c02ee24de1 new colormap options
Carnë Draug <carandraug+dev@gmail.com>
parents: 14279
diff changeset
32
11420
466ba499eff5 Update docstrings for colormap files.
Rik <octave@nomad.inbox5.com>
parents: 9751
diff changeset
33 function map = spring (n)
6788
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
34
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
35 if (nargin == 0)
11420
466ba499eff5 Update docstrings for colormap files.
Rik <octave@nomad.inbox5.com>
parents: 9751
diff changeset
36 n = rows (colormap);
6788
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
37 elseif (nargin == 1)
11420
466ba499eff5 Update docstrings for colormap files.
Rik <octave@nomad.inbox5.com>
parents: 9751
diff changeset
38 if (! isscalar (n))
6788
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
39 error ("spring: argument must be a scalar");
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
40 endif
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
41 else
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
42 print_usage ();
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
43 endif
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
44
11420
466ba499eff5 Update docstrings for colormap files.
Rik <octave@nomad.inbox5.com>
parents: 9751
diff changeset
45 if (n == 1)
11587
c792872f8942 all script files: untabify and strip trailing whitespace
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
46 map = [1, 0, 1];
11420
466ba499eff5 Update docstrings for colormap files.
Rik <octave@nomad.inbox5.com>
parents: 9751
diff changeset
47 elseif (n > 1)
466ba499eff5 Update docstrings for colormap files.
Rik <octave@nomad.inbox5.com>
parents: 9751
diff changeset
48 r = ones (n, 1);
14279
f205d0074687 Update colormap files with faster code.
Rik <octave@nomad.inbox5.com>
parents: 14237
diff changeset
49 g = [0:(n-1)]' / (n - 1);
6788
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
50 b = 1 - g;
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
51 map = [r, g, b];
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
52 else
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
53 map = [];
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
54 endif
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
55
c81a0f3f5a82 [project @ 2007-07-23 22:05:29 by dbateman]
dbateman
parents:
diff changeset
56 endfunction
9751
2b0cc0b6db61 Add demos for colormap functions
Soren Hauberg <hauberg@gmail.com>
parents: 9245
diff changeset
57
14237
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
58
9751
2b0cc0b6db61 Add demos for colormap functions
Soren Hauberg <hauberg@gmail.com>
parents: 9245
diff changeset
59 %!demo
2b0cc0b6db61 Add demos for colormap functions
Soren Hauberg <hauberg@gmail.com>
parents: 9245
diff changeset
60 %! ## Show the 'spring' colormap as an image
14237
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
61 %! image (1:64, linspace (0, 1, 64), repmat ((1:64)', 1, 64));
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
62 %! axis ([1, 64, 0, 1], "ticy", "xy");
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
63 %! colormap (spring (64));
9751
2b0cc0b6db61 Add demos for colormap functions
Soren Hauberg <hauberg@gmail.com>
parents: 9245
diff changeset
64