octave-lyh: scripts/image/imagesc.m annotate

annotate scripts/image/imagesc.m @ 16466:ac332eb727dd

Simplify calculation of colormaps * scripts/image/copper.m: Replace slower linspace with range operator. * scripts/image/hot.m: Add test for n==2 to allow elimination of subsequent if conditional tests. Replace mod calculation with simpler expression. * scripts/image/rainbow.m: Replace slower linspace with range operator. Align columns of calculation for better code readability.

author	Rik <rik@octave.org>
date	Sun, 07 Apr 2013 22:24:34 -0700
parents	806ea52af230
children	b5d6314314fc

rev	line source
14138 72c96de7a403 maint: update copyright notices for 2012 John W. Eaton <jwe@octave.org> parents: 14001 diff changeset	1 ## Copyright (C) 1994-2012 John W. Eaton
2313 5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	2 ##
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	3 ## This file is part of Octave.
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	4 ##
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	5 ## Octave is free software; you can redistribute it and/or modify it
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 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: 6368 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: 6368 diff changeset	8 ## your option) any later version.
2313 5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	9 ##
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	10 ## Octave is distributed in the hope that it will be useful, but
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	13 ## General Public License for more details.
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	14 ##
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 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: 6368 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: 6368 diff changeset	17 ## <http://www.gnu.org/licenses/>.
1024 56520a75b5b3 [project @ 1995-01-11 20:30:04 by jwe] jwe parents: 904 diff changeset	18
3381 69b167451491 [project @ 1999-12-15 20:48:10 by jwe] jwe parents: 3373 diff changeset	19 ## -- texinfo --
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	20 ## @deftypefn {Function File} {} imagesc (@var{img})
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	21 ## @deftypefnx {Function File} {} imagesc (@var{x}, @var{y}, @var{img})
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	22 ## @deftypefnx {Function File} {} imagesc (@dots{}, @var{climits})
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	23 ## @deftypefnx {Function File} {} imagesc (@var{h}, @dots{})
7650 eb7bdde776f2 Texinfo fixes John W. Eaton <jwe@octave.org> parents: 7471 diff changeset	24 ## @deftypefnx {Function File} {@var{h} =} imagesc (@dots{})
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	25 ## Display a scaled version of the matrix @var{img} as a color image. The
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	26 ## colormap is scaled so that the entries of the matrix occupy the entire
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	27 ## colormap. If @code{@var{climits} = [@var{lo}, @var{hi}]} is given, then that
14359 7277fe922e99 doc: Use Octave preference for double quote in docstrings in scripts/ Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	28 ## range is set to the "clim" of the current axes.
3651 c2305b99fbd7 [project @ 2000-03-31 07:12:29 by jwe] jwe parents: 3457 diff changeset	29 ##
c2305b99fbd7 [project @ 2000-03-31 07:12:29 by jwe] jwe parents: 3457 diff changeset	30 ## The axis values corresponding to the matrix elements are specified in
4403 f52b3f1a9399 [project @ 2003-05-01 19:28:11 by jwe] jwe parents: 3882 diff changeset	31 ## @var{x} and @var{y}, either as pairs giving the minimum and maximum
f52b3f1a9399 [project @ 2003-05-01 19:28:11 by jwe] jwe parents: 3882 diff changeset	32 ## values for the respective axes, or as values for each row and column
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	33 ## of the matrix @var{img}.
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	34 ##
14001 5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761) Rik <octave@nomad.inbox5.com> parents: 11589 diff changeset	35 ## The optional return value @var{h} is a graphics handle to the image.
8286 6f2d95255911 fix @seealso references to point to existing anchors Thorsten Meyer <thorsten.meyier@gmx.de> parents: 7650 diff changeset	36 ## @seealso{image, imshow, caxis}
3373 36405da8e173 [project @ 1999-11-23 20:54:17 by jwe] jwe parents: 3225 diff changeset	37 ## @end deftypefn
559 4e826edfbc56 [project @ 1994-07-25 22:18:28 by jwe] jwe parents: diff changeset	38
3202 44d82b369c78 [project @ 1998-10-29 20:27:57 by jwe] jwe parents: 2847 diff changeset	39 ## Author: Tony Richardson <arichard@stark.cc.oh.us>
2312 204cc7db6f4a [project @ 1996-07-11 21:20:36 by jwe] jwe parents: 2311 diff changeset	40 ## Created: July 1994
204cc7db6f4a [project @ 1996-07-11 21:20:36 by jwe] jwe parents: 2311 diff changeset	41 ## Adapted-By: jwe
904 3470f1e25a79 [project @ 1994-11-09 21:22:15 by jwe] jwe parents: 559 diff changeset	42
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	43 function h = imagesc (varargin)
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	44
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	45 if (nargin < 1 \|\| nargin > 4)
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	46 print_usage ();
e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	47 elseif (isscalar (varargin{1}) && ishandle (varargin{1}))
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	48 harg = varargin{1};
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	49 if (! strcmp (get (harg, "type"), "axes"))
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	50 error ("imagesc: expecting first argument to be an axes object");
e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	51 endif
e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	52 oldh = gca ();
e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	53 unwind_protect
e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	54 axes (h);
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	55 htmp = __imagesc__ (harg, varargin{2:end});
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	56 unwind_protect_cleanup
e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	57 axes (oldh);
e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	58 end_unwind_protect
e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	59 else
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	60 htmp = __imagesc__ (gca (), varargin{:});
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	61 endif
e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	62
e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	63 if (nargout > 0)
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	64 h = htmp;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	65 endif
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	66
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	67 endfunction
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	68
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	69 function h = __imagesc__ (ax, x, y, img, climits)
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	70
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	71 if (nargin == 2)
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	72 img = x;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	73 x = y = climits = [];
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	74 elseif (nargin == 3)
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	75 img = x;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	76 climits = y;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	77 x = y = [];
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	78 elseif (nargin == 4 && ! isscalar (x) && ! isscalar (y) && ! isscalar (img))
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	79 climits = [];
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	80 endif
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	81
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	82 h = image (ax, x, y, img);
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	83 set (h, "cdatamapping", "scaled");
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	84
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	85 ## use given climits or guess them from the matrix
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	86 if (numel (climits) == 2 && climits(1) <= climits(2))
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	87 set (ax, "clim", climits);
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	88 elseif (! isempty (climits))
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	89 error ("imagesc: CLIMITS must be in form [lo, hi]");
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	90 endif
e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	91
e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	92 endfunction
e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	93
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	94
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	95 %!demo
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	96 %! clf;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	97 %! colormap ("default");
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	98 %! img = 1 ./ hilb (11);
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	99 %! x = y = -5:5;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	100 %! subplot (2,2,1);
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	101 %! h = imagesc (x, y, img);
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	102 %! ylabel ("limits = [-5.5, 5.5]");
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	103 %! title ("imagesc (x, y, img)");
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	104 %! subplot (2,2,2);
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	105 %! h = imagesc (-x, y, img);
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	106 %! title ("imagesc (-x, y, img)");
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	107 %! subplot (2,2,3);
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	108 %! h = imagesc (x, -y, img);
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	109 %! title ("imagesc (x, -y, img)");
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	110 %! ylabel ("limits = [-5.5, 5.5]");
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	111 %! subplot (2,2,4);
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	112 %! h = imagesc (-x, -y, img);
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	113 %! title ("imagesc (-x, -y, img)");
559 4e826edfbc56 [project @ 1994-07-25 22:18:28 by jwe] jwe parents: diff changeset	114
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	115 %!demo
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	116 %! clf;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	117 %! colormap ("default");
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	118 %! g = 0.1:0.1:10;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	119 %! h = g'*g;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	120 %! imagesc (g, g, sin (h));
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	121 %! hold on;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	122 %! imagesc (g, g+12, cos (h/2));
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	123 %! axis ([0 10 0 22]);
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	124 %! hold off;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	125 %! title ("two consecutive images");
6368 ec2a523713b5 [project @ 2007-02-28 22:07:24 by jwe] jwe parents: 6046 diff changeset	126
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	127 %!demo
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	128 %! clf;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	129 %! colormap ("default");
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	130 %! g = 0.1:0.1:10;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	131 %! h = g'*g;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	132 %! imagesc (g, g, sin (h));
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	133 %! hold all;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	134 %! plot (g, 11.0 * ones (size (g)));
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	135 %! imagesc (g, g+12, cos (h/2));
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	136 %! axis ([0 10 0 22]);
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	137 %! hold off;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	138 %! title ("image, line, image");
559 4e826edfbc56 [project @ 1994-07-25 22:18:28 by jwe] jwe parents: diff changeset	139
15683 806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	140 %!demo
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	141 %! clf;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	142 %! colormap ("default");
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	143 %! g = 0.1:0.1:10;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	144 %! h = g'*g;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	145 %! plot (g, 10.5 * ones (size (g)));
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	146 %! hold all;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	147 %! imagesc (g, g, sin (h));
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	148 %! plot (g, 11.0 * ones (size (g)));
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	149 %! imagesc (g, g+12, cos (h/2));
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	150 %! plot (g, 11.5 * ones (size (g)));
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	151 %! axis ([0 10 0 22]);
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	152 %! hold off;
806ea52af230 Overhaul m-files in image directory to provide better support for images stored as integers. Rik <rik@octave.org> parents: 14359 diff changeset	153 %! title ("line, image, line, image, line");
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	154

Mercurial > hg > octave-lyh

annotate scripts/image/imagesc.m @ 16466:ac332eb727dd