Mercurial > octave-nkf
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 |
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 | 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 | |
7016 | 7 ## the Free Software Foundation; either version 3 of the License, or (at |
8 ## your option) any later version. | |
6788 | 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 | |
7016 | 16 ## along with Octave; see the file COPYING. If not, see |
17 ## <http://www.gnu.org/licenses/>. | |
6788 | 18 |
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 | 25 ## @seealso{colormap} |
26 ## @end deftypefn | |
27 | |
28 ## Author: Kai Habel <kai.habel@gmx.de> | |
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 | 34 |
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 | 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 | 39 error ("spring: argument must be a scalar"); |
40 endif | |
41 else | |
42 print_usage (); | |
43 endif | |
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 | 50 b = 1 - g; |
51 map = [r, g, b]; | |
52 else | |
53 map = []; | |
54 endif | |
55 | |
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 |