octave: scripts/image/image.m annotate

annotate scripts/image/image.m @ 14247:c4fa5e0b6193

test: Make surface demos reproducible by setting colormap to default at start of demo. * bicubic.m, interp2.m, interpn.m, griddata.m, image.m, axis.m, clabel.m, colorbar.m, contour.m, contourf.m, cylinder.m, ezcontour.m, ezcontourf.m, ezmesh.m, ezmeshc.m, ezsurf.m, ezsurfc.m, hold.m, pcolor.m, plotyy.m, quiver3.m, ribbon.m, shading.m, slice.m, sombrero.m, surf.m, surfc.m, surfnorm.m, trisurf.m: Set colormap to default at start of demos to make them reproducible.

author	Rik <octave@nomad.inbox5.com>
date	Sun, 22 Jan 2012 10:02:27 -0800
parents	11949c9795a0
children	1f911333ed3d

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 --
10793 be55736a0783 Grammarcheck the documentation from m-files. Rik <octave@nomad.inbox5.com> parents: 10704 diff changeset	20 ## @deftypefn {Function File} {} image (@var{img})
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: 6164 diff changeset	21 ## @deftypefnx {Function File} {} image (@var{x}, @var{y}, @var{img})
14001 5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761) Rik <octave@nomad.inbox5.com> parents: 13993 diff changeset	22 ## @deftypefnx {Function File} {@var{h} =} image (@dots{})
12617 fb2e14a276d2 Fixed naming of variables in texinfo Paul Boven <p.boven@xs4all.nl> parents: 11587 diff changeset	23 ## Display a matrix as a color image. The elements of @var{img} are indices
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7074 diff changeset	24 ## into the current colormap, and the colormap will be scaled so that the
12617 fb2e14a276d2 Fixed naming of variables in texinfo Paul Boven <p.boven@xs4all.nl> parents: 11587 diff changeset	25 ## extremes of @var{img} are mapped to the extremes of the colormap.
3651 c2305b99fbd7 [project @ 2000-03-31 07:12:29 by jwe] jwe parents: 3457 diff changeset	26 ##
c2305b99fbd7 [project @ 2000-03-31 07:12:29 by jwe] jwe parents: 3457 diff changeset	27 ## The axis values corresponding to the matrix elements are specified in
9051 1bf0ce0930be Grammar check TexInfo in all .m files Rik <rdrider0-list@yahoo.com> parents: 8920 diff changeset	28 ## @var{x} and @var{y}. If you're not using gnuplot 4.2 or later, these
6164 d90b16110095 [project @ 2006-11-14 21:08:00 by jwe] jwe parents: 6088 diff changeset	29 ## variables are ignored.
10817 d9147775da54 image.m: Always reverse 'ydir' property when displaying images. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	30 ##
11587 c792872f8942 all script files: untabify and strip trailing whitespace John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	31 ## Implementation Note: The origin (0, 0) for images is located in the
10817 d9147775da54 image.m: Always reverse 'ydir' property when displaying images. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	32 ## upper left. For ordinary plots, the origin is located in the lower
d9147775da54 image.m: Always reverse 'ydir' property when displaying images. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	33 ## left. Octave handles this inversion by plotting the data normally,
d9147775da54 image.m: Always reverse 'ydir' property when displaying images. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	34 ## and then reversing the direction of the y-axis by setting the
11109 41d18f6342f9 remove image_viewer function John W. Eaton <jwe@octave.org> parents: 11090 diff changeset	35 ## @code{ydir} property to @code{"reverse"}. This has implications whenever
10817 d9147775da54 image.m: Always reverse 'ydir' property when displaying images. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	36 ## an image and an ordinary plot need to be overlaid. The recommended
d9147775da54 image.m: Always reverse 'ydir' property when displaying images. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	37 ## solution is to display the image and then plot the reversed ydata
d9147775da54 image.m: Always reverse 'ydir' property when displaying images. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	38 ## using, for example, @code{flipud (ydata,1)}.
14001 5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761) Rik <octave@nomad.inbox5.com> parents: 13993 diff changeset	39 ##
5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761) Rik <octave@nomad.inbox5.com> parents: 13993 diff changeset	40 ## The optional return value @var{h} is a graphics handle to the image.
11109 41d18f6342f9 remove image_viewer function John W. Eaton <jwe@octave.org> parents: 11090 diff changeset	41 ## @seealso{imshow, imagesc, colormap}
3373 36405da8e173 [project @ 1999-11-23 20:54:17 by jwe] jwe parents: 3202 diff changeset	42 ## @end deftypefn
559 4e826edfbc56 [project @ 1994-07-25 22:18:28 by jwe] jwe parents: diff changeset	43
3202 44d82b369c78 [project @ 1998-10-29 20:27:57 by jwe] jwe parents: 2847 diff changeset	44 ## Author: Tony Richardson <arichard@stark.cc.oh.us>
2312 204cc7db6f4a [project @ 1996-07-11 21:20:36 by jwe] jwe parents: 2311 diff changeset	45 ## Created: July 1994
204cc7db6f4a [project @ 1996-07-11 21:20:36 by jwe] jwe parents: 2311 diff changeset	46 ## Adapted-By: jwe
904 3470f1e25a79 [project @ 1994-11-09 21:22:15 by jwe] jwe parents: 686 diff changeset	47
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7074 diff changeset	48 function retval = image (varargin)
e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7074 diff changeset	49
7276 1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	50 [ax, varargin, nargin] = __plt_get_axis_arg__ ("image", varargin{:});
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	51
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	52 firstnonnumeric = Inf;
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	53 for i = 1 : nargin
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	54 if (! isnumeric (varargin{i}))
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	55 firstnonnumeric = i;
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	56 break;
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7074 diff changeset	57 endif
7276 1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	58 endfor
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	59
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	60 if (nargin == 0 \|\| firstnonnumeric == 1)
10650 f0dc41c824ce Replace calls to deprecated functions. Rik <octave@nomad.inbox5.com> parents: 10433 diff changeset	61 img = imread ("default.img");
7276 1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	62 x = y = [];
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	63 elseif (nargin == 1 \|\| firstnonnumeric == 2)
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	64 img = varargin{1};
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	65 x = y = [];
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	66 elseif (nargin == 2 \|\| firstnonnumeric == 3)
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	67 print_usage ();
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7074 diff changeset	68 else
7276 1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	69 x = varargin{1};
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	70 y = varargin{2};
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	71 img = varargin{3};
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	72 firstnonnumeric = 4;
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7074 diff changeset	73 endif
e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7074 diff changeset	74
7276 1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	75 oldax = gca ();
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	76 unwind_protect
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	77 axes (ax);
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	78 h = __img__ (x, y, img, varargin {firstnonnumeric:end});
7315 3ceb12c499e9 [project @ 2007-12-13 21:35:36 by jwe] jwe parents: 7276 diff changeset	79 set (ax, "layer", "top");
7276 1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	80 unwind_protect_cleanup
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	81 axes (oldax);
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	82 end_unwind_protect
1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	83
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7074 diff changeset	84 if (nargout > 0)
7276 1e8e64d71e34 [project @ 2007-12-10 20:09:59 by jwe] jwe parents: 7208 diff changeset	85 retval = h;
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7074 diff changeset	86 endif
e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7074 diff changeset	87
e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7074 diff changeset	88 endfunction
9899 9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	89
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	90 ## Generic image creation.
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	91 ##
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	92 ## The axis values corresponding to the matrix elements are specified in
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	93 ## @var{x} and @var{y}. If you're not using gnuplot 4.2 or later, these
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	94 ## variables are ignored.
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	95
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	96 ## Author: Tony Richardson <arichard@stark.cc.oh.us>
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	97 ## Created: July 1994
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	98 ## Adapted-By: jwe
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	99
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	100 function h = __img__ (x, y, img, varargin)
13980 bd2be36fd949 image.m: Warn if input coordinates are not linearly spaced. Ben Abbott <bpabbott@mac.com> parents: 13173 diff changeset	101
9899 9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	102 newplot ();
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	103
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	104 if (isempty (img))
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	105 error ("__img__: matrix is empty");
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	106 endif
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	107
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	108 if (isempty (x))
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	109 x = [1, columns(img)];
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	110 endif
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	111
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	112 if (isempty (y))
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	113 y = [1, rows(img)];
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	114 endif
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	115
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	116 xdata = [x(1), x(end)];
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	117 ydata = [y(1), y(end)];
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	118
13993 e58963b5c0b1 image.m: Fix test for non-linearly spaced coordinates. Ben Abbott <bpabbott@mac.com> parents: 13980 diff changeset	119 dx = diff (x);
e58963b5c0b1 image.m: Fix test for non-linearly spaced coordinates. Ben Abbott <bpabbott@mac.com> parents: 13980 diff changeset	120 dy = diff (y);
e58963b5c0b1 image.m: Fix test for non-linearly spaced coordinates. Ben Abbott <bpabbott@mac.com> parents: 13980 diff changeset	121 dx = std (dx) / mean (abs (dx));
e58963b5c0b1 image.m: Fix test for non-linearly spaced coordinates. Ben Abbott <bpabbott@mac.com> parents: 13980 diff changeset	122 dy = std (dy) / mean (abs (dy));
e58963b5c0b1 image.m: Fix test for non-linearly spaced coordinates. Ben Abbott <bpabbott@mac.com> parents: 13980 diff changeset	123 tol = 100*eps;
e58963b5c0b1 image.m: Fix test for non-linearly spaced coordinates. Ben Abbott <bpabbott@mac.com> parents: 13980 diff changeset	124 if (any (dx > tol) \|\| any (dy > tol))
13980 bd2be36fd949 image.m: Warn if input coordinates are not linearly spaced. Ben Abbott <bpabbott@mac.com> parents: 13173 diff changeset	125 warning ("Image does not map to non-linearly spaced coordinates")
bd2be36fd949 image.m: Warn if input coordinates are not linearly spaced. Ben Abbott <bpabbott@mac.com> parents: 13173 diff changeset	126 endif
bd2be36fd949 image.m: Warn if input coordinates are not linearly spaced. Ben Abbott <bpabbott@mac.com> parents: 13173 diff changeset	127
9899 9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	128 ca = gca ();
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	129
10817 d9147775da54 image.m: Always reverse 'ydir' property when displaying images. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	130 tmp = __go_image__ (ca, "cdata", img, "xdata", xdata, "ydata", ydata,
11076 b748b86cb8c1 fix images with width or height of 1 Shai Ayal <shaiay@users.sourceforge.net> parents: 10952 diff changeset	131 "cdatamapping", "direct", varargin {:});
b748b86cb8c1 fix images with width or height of 1 Shai Ayal <shaiay@users.sourceforge.net> parents: 10952 diff changeset	132
b748b86cb8c1 fix images with width or height of 1 Shai Ayal <shaiay@users.sourceforge.net> parents: 10952 diff changeset	133 px = __image_pixel_size__ (tmp);
11090 2adf4736dafa Do not store flipped image property values when x/ydata descends. Ben Abbott <bpabbott@mac.com> parents: 11080 diff changeset	134
2adf4736dafa Do not store flipped image property values when x/ydata descends. Ben Abbott <bpabbott@mac.com> parents: 11080 diff changeset	135 if (xdata(2) < xdata(1))
2adf4736dafa Do not store flipped image property values when x/ydata descends. Ben Abbott <bpabbott@mac.com> parents: 11080 diff changeset	136 xdata = xdata(2:-1:1);
2adf4736dafa Do not store flipped image property values when x/ydata descends. Ben Abbott <bpabbott@mac.com> parents: 11080 diff changeset	137 elseif (xdata(2) == xdata(1))
2adf4736dafa Do not store flipped image property values when x/ydata descends. Ben Abbott <bpabbott@mac.com> parents: 11080 diff changeset	138 xdata = xdata(1) + [0, size(img,2)-1];
2adf4736dafa Do not store flipped image property values when x/ydata descends. Ben Abbott <bpabbott@mac.com> parents: 11080 diff changeset	139 endif
2adf4736dafa Do not store flipped image property values when x/ydata descends. Ben Abbott <bpabbott@mac.com> parents: 11080 diff changeset	140 if (ydata(2) < ydata(1))
2adf4736dafa Do not store flipped image property values when x/ydata descends. Ben Abbott <bpabbott@mac.com> parents: 11080 diff changeset	141 ydata = ydata(2:-1:1);
2adf4736dafa Do not store flipped image property values when x/ydata descends. Ben Abbott <bpabbott@mac.com> parents: 11080 diff changeset	142 elseif (ydata(2) == ydata(1))
2adf4736dafa Do not store flipped image property values when x/ydata descends. Ben Abbott <bpabbott@mac.com> parents: 11080 diff changeset	143 ydata = ydata(1) + [0, size(img,1)-1];
2adf4736dafa Do not store flipped image property values when x/ydata descends. Ben Abbott <bpabbott@mac.com> parents: 11080 diff changeset	144 endif
11076 b748b86cb8c1 fix images with width or height of 1 Shai Ayal <shaiay@users.sourceforge.net> parents: 10952 diff changeset	145 xlim = xdata + [-px(1), px(1)];
b748b86cb8c1 fix images with width or height of 1 Shai Ayal <shaiay@users.sourceforge.net> parents: 10952 diff changeset	146 ylim = ydata + [-px(2), px(2)];
9899 9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	147
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	148 ## FIXME -- how can we do this and also get the {x,y}limmode
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	149 ## properties to remain "auto"? I suppose this adjustment should
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	150 ## happen automatically in axes::update_axis_limits instead of
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	151 ## explicitly setting the values here. But then what information is
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	152 ## available to axes::update_axis_limits to determine that the
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	153 ## adjustment is necessary?
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	154 set (ca, "xlim", xlim, "ylim", ylim);
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	155
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	156 if (ndims (img) == 3)
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	157 if (isinteger (img))
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	158 c = class (img);
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	159 mn = intmin (c);
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	160 mx = intmax (c);
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	161 set (ca, "clim", double ([mn, mx]));
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	162 endif
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	163 endif
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	164
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	165 set (ca, "view", [0, 90]);
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	166
11308 9a08fa5b33bd image.m: Only flip y-axis if nextplot property equal "replace". Ben Abbott <bpabbott@mac.com> parents: 11109 diff changeset	167 if (strcmp (get (ca, "nextplot"), "replace"))
9a08fa5b33bd image.m: Only flip y-axis if nextplot property equal "replace". Ben Abbott <bpabbott@mac.com> parents: 11109 diff changeset	168 # Always reverse y-axis for images, unless hold is on
9a08fa5b33bd image.m: Only flip y-axis if nextplot property equal "replace". Ben Abbott <bpabbott@mac.com> parents: 11109 diff changeset	169 set (ca, "ydir", "reverse");
9a08fa5b33bd image.m: Only flip y-axis if nextplot property equal "replace". Ben Abbott <bpabbott@mac.com> parents: 11109 diff changeset	170 endif
10817 d9147775da54 image.m: Always reverse 'ydir' property when displaying images. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	171
9899 9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	172 if (nargout > 0)
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	173 h = tmp;
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	174 endif
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	175
9f25290a35e8 more private function and subfunction changes John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	176 endfunction
10942 48a1812fcc3a image.m: Matlab compatible axis limits, add demo. Ben Abbott <bpabbott@mac.com> parents: 10818 diff changeset	177
14237 11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	178
10942 48a1812fcc3a image.m: Matlab compatible axis limits, add demo. Ben Abbott <bpabbott@mac.com> parents: 10818 diff changeset	179 %!demo
14237 11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	180 %! clf;
14247 c4fa5e0b6193 test: Make surface demos reproducible by setting colormap to default at start of demo. Rik <octave@nomad.inbox5.com> parents: 14237 diff changeset	181 %! colormap ("default");
11080 36ceff79607b image.m: Allow x/ydata to imply a flip of the image. Modify demos. Ben Abbott <bpabbott@mac.com> parents: 11076 diff changeset	182 %! img = 1 ./ hilb (11);
36ceff79607b image.m: Allow x/ydata to imply a flip of the image. Modify demos. Ben Abbott <bpabbott@mac.com> parents: 11076 diff changeset	183 %! x = -5:5;
36ceff79607b image.m: Allow x/ydata to imply a flip of the image. Modify demos. Ben Abbott <bpabbott@mac.com> parents: 11076 diff changeset	184 %! y = x;
14237 11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	185 %! subplot (2,2,1);
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	186 %! h = image (abs(x), abs(y), img);
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	187 %! set (h, "cdatamapping", "scaled");
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	188 %! ylabel ("limits = [4.5, 15.5]");
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	189 %! title ("image (abs(x), abs(y), img)");
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	190 %! subplot (2,2,2);
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	191 %! h = image (-x, y, img);
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	192 %! set (h, "cdatamapping", "scaled");
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	193 %! title ("image (-x, y, img)");
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	194 %! subplot (2,2,3);
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	195 %! h = image (x, -y, img);
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	196 %! set (h, "cdatamapping", "scaled");
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	197 %! title ("image (x, -y, img)");
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	198 %! ylabel ("limits = [-5.5, 5.5]");
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	199 %! subplot (2,2,4);
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	200 %! h = image (-x, -y, img);
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	201 %! set (h, "cdatamapping", "scaled");
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	202 %! title ("image (-x, -y, img)");
10942 48a1812fcc3a image.m: Matlab compatible axis limits, add demo. Ben Abbott <bpabbott@mac.com> parents: 10818 diff changeset	203
13165 9efb676b34ac Fix bug #34015. Allow for sequential images. Ben Abbott <bpabbott@mac.com> parents: 11587 diff changeset	204 %!demo
14237 11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	205 %! clf;
14247 c4fa5e0b6193 test: Make surface demos reproducible by setting colormap to default at start of demo. Rik <octave@nomad.inbox5.com> parents: 14237 diff changeset	206 %! colormap ("default");
13165 9efb676b34ac Fix bug #34015. Allow for sequential images. Ben Abbott <bpabbott@mac.com> parents: 11587 diff changeset	207 %! g = 0.1:0.1:10;
9efb676b34ac Fix bug #34015. Allow for sequential images. Ben Abbott <bpabbott@mac.com> parents: 11587 diff changeset	208 %! h = g'*g;
9efb676b34ac Fix bug #34015. Allow for sequential images. Ben Abbott <bpabbott@mac.com> parents: 11587 diff changeset	209 %! imagesc (g, g, sin (h));
14237 11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	210 %! hold on;
13165 9efb676b34ac Fix bug #34015. Allow for sequential images. Ben Abbott <bpabbott@mac.com> parents: 11587 diff changeset	211 %! imagesc (g, g+12, cos (h/2));
14237 11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	212 %! axis ([0 10 0 22]);
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	213 %! hold off;
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	214 %! title ("two consecutive images");
10952 18b0af0bbd6b image.m: Fix axis limits for single dimension images, add demo. Ben Abbott <bpabbott@mac.com> parents: 10942 diff changeset	215
13165 9efb676b34ac Fix bug #34015. Allow for sequential images. Ben Abbott <bpabbott@mac.com> parents: 11587 diff changeset	216 %!demo
14237 11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	217 %! clf;
14247 c4fa5e0b6193 test: Make surface demos reproducible by setting colormap to default at start of demo. Rik <octave@nomad.inbox5.com> parents: 14237 diff changeset	218 %! colormap ("default");
13165 9efb676b34ac Fix bug #34015. Allow for sequential images. Ben Abbott <bpabbott@mac.com> parents: 11587 diff changeset	219 %! g = 0.1:0.1:10;
9efb676b34ac Fix bug #34015. Allow for sequential images. Ben Abbott <bpabbott@mac.com> parents: 11587 diff changeset	220 %! h = g'*g;
9efb676b34ac Fix bug #34015. Allow for sequential images. Ben Abbott <bpabbott@mac.com> parents: 11587 diff changeset	221 %! imagesc (g, g, sin (h));
14237 11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	222 %! hold all;
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	223 %! plot (g, 11.0 * ones (size (g)));
13165 9efb676b34ac Fix bug #34015. Allow for sequential images. Ben Abbott <bpabbott@mac.com> parents: 11587 diff changeset	224 %! imagesc (g, g+12, cos (h/2));
14237 11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	225 %! axis ([0 10 0 22]);
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	226 %! hold off;
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	227 %! title ("image, line, image");
13165 9efb676b34ac Fix bug #34015. Allow for sequential images. Ben Abbott <bpabbott@mac.com> parents: 11587 diff changeset	228
9efb676b34ac Fix bug #34015. Allow for sequential images. Ben Abbott <bpabbott@mac.com> parents: 11587 diff changeset	229 %!demo
14237 11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	230 %! clf;
14247 c4fa5e0b6193 test: Make surface demos reproducible by setting colormap to default at start of demo. Rik <octave@nomad.inbox5.com> parents: 14237 diff changeset	231 %! colormap ("default");
13165 9efb676b34ac Fix bug #34015. Allow for sequential images. Ben Abbott <bpabbott@mac.com> parents: 11587 diff changeset	232 %! g = 0.1:0.1:10;
9efb676b34ac Fix bug #34015. Allow for sequential images. Ben Abbott <bpabbott@mac.com> parents: 11587 diff changeset	233 %! h = g'*g;
14237 11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	234 %! plot (g, 10.5 * ones (size (g)));
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	235 %! hold all;
13165 9efb676b34ac Fix bug #34015. Allow for sequential images. Ben Abbott <bpabbott@mac.com> parents: 11587 diff changeset	236 %! imagesc (g, g, sin (h));
14237 11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	237 %! plot (g, 11.0 * ones (size (g)));
13165 9efb676b34ac Fix bug #34015. Allow for sequential images. Ben Abbott <bpabbott@mac.com> parents: 11587 diff changeset	238 %! imagesc (g, g+12, cos (h/2));
14237 11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	239 %! plot (g, 11.5 * ones (size (g)));
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	240 %! axis ([0 10 0 22]);
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	241 %! hold off;
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	242 %! title ("line, image, line, image, line");
13165 9efb676b34ac Fix bug #34015. Allow for sequential images. Ben Abbott <bpabbott@mac.com> parents: 11587 diff changeset	243

Mercurial > octave

annotate scripts/image/image.m @ 14247:c4fa5e0b6193