octave: scripts/image/imagesc.m annotate

annotate scripts/image/imagesc.m @ 22069:9121d6584f6a

Overhaul graphics implementation of hold() (bug #43559). * NEWS: Announce possible color changes in plots relying on "hold on". * hold.m: Deprecate "hold all" in docstring. Eliminate use of __hold_all__ graphics property. Update %!demo to use "hold on" only. * ishold.m: Put input validation first. Use switch statement rather than if/else tree for clarity. * graphics.in.h: Remove hidden __hold_all__ graphics property of axes. * graphics.cc (axes::properties::set_defaults): Remove use of __hold_all__. * newplot.m: Delete kluge use of __next_line_color__ and __next_line_style__. Set colororderindex and linestyleorderindex to 1 on new plots. * __next_line_color__.m: Completely rewrite to use the axes graphic property "colororderindex" to keep track of which color should be used next. Also increment "linestyleorderindex" when number of colors used rolls over so that colors will repeat with the next linestyle in the series. Update BIST test. * __next_line_style__.m: Completely rewrite to use the axes graphic property "linestyleorderindex" to keep track of which linestyle should be used next. * imagesc.m, axis.m, legend.m: Replace "hold all" with "hold on" in all demos.

author	Rik <rik@octave.org>
date	Thu, 07 Jul 2016 13:07:03 -0700
parents	516bb87ea72e
children	533c3c4059a3

rev	line source
19697 4197fc428c7d maint: Update copyright notices for 2015. John W. Eaton <jwe@octave.org> parents: 18622 diff changeset	1 ## Copyright (C) 1994-2015 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 --
20852 516bb87ea72e 2015 Code Sprint: remove class of function from docstring for all m-files. Rik <rik@octave.org> parents: 20158 diff changeset	20 ## @deftypefn {} {} imagesc (@var{img})
516bb87ea72e 2015 Code Sprint: remove class of function from docstring for all m-files. Rik <rik@octave.org> parents: 20158 diff changeset	21 ## @deftypefnx {} {} imagesc (@var{x}, @var{y}, @var{img})
516bb87ea72e 2015 Code Sprint: remove class of function from docstring for all m-files. Rik <rik@octave.org> parents: 20158 diff changeset	22 ## @deftypefnx {} {} imagesc (@dots{}, @var{climits})
516bb87ea72e 2015 Code Sprint: remove class of function from docstring for all m-files. Rik <rik@octave.org> parents: 20158 diff changeset	23 ## @deftypefnx {} {} imagesc (@dots{}, "@var{prop}", @var{val}, @dots{})
516bb87ea72e 2015 Code Sprint: remove class of function from docstring for all m-files. Rik <rik@octave.org> parents: 20158 diff changeset	24 ## @deftypefnx {} {} imagesc ("@var{prop1}", @var{val1}, @dots{})
516bb87ea72e 2015 Code Sprint: remove class of function from docstring for all m-files. Rik <rik@octave.org> parents: 20158 diff changeset	25 ## @deftypefnx {} {} imagesc (@var{hax}, @dots{})
516bb87ea72e 2015 Code Sprint: remove class of function from docstring for all m-files. Rik <rik@octave.org> parents: 20158 diff changeset	26 ## @deftypefnx {} {@var{h} =} imagesc (@dots{})
20158 7503499a252b doc: Update docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19697 diff changeset	27 ## Display a scaled version of the matrix @var{img} as a color image.
7503499a252b doc: Update docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19697 diff changeset	28 ##
7503499a252b doc: Update docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19697 diff changeset	29 ## The colormap is scaled so that the entries of the matrix occupy the entire
7503499a252b doc: Update docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19697 diff changeset	30 ## colormap. If @code{@var{climits} = [@var{lo}, @var{hi}]} is given, then
7503499a252b doc: Update docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19697 diff changeset	31 ## that range is set to the @qcode{"clim"} of the current axes.
3651 c2305b99fbd7 [project @ 2000-03-31 07:12:29 by jwe] jwe parents: 3457 diff changeset	32 ##
c2305b99fbd7 [project @ 2000-03-31 07:12:29 by jwe] jwe parents: 3457 diff changeset	33 ## 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	34 ## @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	35 ## 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	36 ## of the matrix @var{img}.
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	37 ##
14001 5f0bb45e615c doc: Update documentation for functions returning a graphics handle h (Bug #34761) Rik <octave@nomad.inbox5.com> parents: 11589 diff changeset	38 ## The optional return value @var{h} is a graphics handle to the image.
17689 dd8db3f1c1da doc: Add information about High-Level/Low-Level calling forms for image, imagesc. Rik <rik@octave.org> parents: 17281 diff changeset	39 ##
dd8db3f1c1da doc: Add information about High-Level/Low-Level calling forms for image, imagesc. Rik <rik@octave.org> parents: 17281 diff changeset	40 ## Calling Forms: The @code{imagesc} function can be called in two forms:
dd8db3f1c1da doc: Add information about High-Level/Low-Level calling forms for image, imagesc. Rik <rik@octave.org> parents: 17281 diff changeset	41 ## High-Level and Low-Level. When invoked with normal options, the High-Level
dd8db3f1c1da doc: Add information about High-Level/Low-Level calling forms for image, imagesc. Rik <rik@octave.org> parents: 17281 diff changeset	42 ## form is used which first calls @code{newplot} to prepare the graphic figure
dd8db3f1c1da doc: Add information about High-Level/Low-Level calling forms for image, imagesc. Rik <rik@octave.org> parents: 17281 diff changeset	43 ## and axes. When the only inputs to @code{image} are property/value pairs
dd8db3f1c1da doc: Add information about High-Level/Low-Level calling forms for image, imagesc. Rik <rik@octave.org> parents: 17281 diff changeset	44 ## the Low-Level form is used which creates a new instance of an image object
dd8db3f1c1da doc: Add information about High-Level/Low-Level calling forms for image, imagesc. Rik <rik@octave.org> parents: 17281 diff changeset	45 ## and inserts it in the current axes.
dd8db3f1c1da doc: Add information about High-Level/Low-Level calling forms for image, imagesc. Rik <rik@octave.org> parents: 17281 diff changeset	46 ##
8286 6f2d95255911 fix @seealso references to point to existing anchors Thorsten Meyer <thorsten.meyier@gmx.de> parents: 7650 diff changeset	47 ## @seealso{image, imshow, caxis}
3373 36405da8e173 [project @ 1999-11-23 20:54:17 by jwe] jwe parents: 3225 diff changeset	48 ## @end deftypefn
559 4e826edfbc56 [project @ 1994-07-25 22:18:28 by jwe] jwe parents: diff changeset	49
3202 44d82b369c78 [project @ 1998-10-29 20:27:57 by jwe] jwe parents: 2847 diff changeset	50 ## Author: Tony Richardson <arichard@stark.cc.oh.us>
2312 204cc7db6f4a [project @ 1996-07-11 21:20:36 by jwe] jwe parents: 2311 diff changeset	51 ## Created: July 1994
204cc7db6f4a [project @ 1996-07-11 21:20:36 by jwe] jwe parents: 2311 diff changeset	52 ## Adapted-By: jwe
904 3470f1e25a79 [project @ 1994-11-09 21:22:15 by jwe] jwe parents: 559 diff changeset	53
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	54 function h = imagesc (varargin)
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	55
17692 38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	56 [hax, varargin, nargin] = __plt_get_axis_arg__ ("imagesc", varargin{:});
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	57
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	58 chararg = find (cellfun ("isclass", varargin, "char"), 1, "first");
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	59
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	60 do_new = true;
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	61 if (nargin == 0)
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	62 print_usage ();
17692 38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	63 elseif (chararg == 1)
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	64 ## Low-Level syntax
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	65 do_new = false;
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	66 img = x = y = climits = [];
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	67 elseif (nargin == 1 \|\| chararg == 2)
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	68 img = varargin{1};
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	69 x = y = climits = [];
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	70 elseif (nargin == 2 \|\| chararg == 3)
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	71 img = varargin{1};
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	72 climits = varargin{2};
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	73 x = y = [];
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	74 elseif (nargin == 3 \|\| chararg == 4)
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	75 x = varargin{1};
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	76 y = varargin{2};
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	77 img = varargin{3};
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	78 climits = [];
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	79 elseif (nargin == 4 \|\| chararg == 5)
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	80 x = varargin{1};
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	81 y = varargin{2};
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	82 img = varargin{3};
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	83 climits = varargin{4};
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	84 endif
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	85
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	86 oldfig = [];
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	87 if (! isempty (hax))
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	88 oldfig = get (0, "currentfigure");
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	89 endif
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	90 unwind_protect
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	91 if (do_new)
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	92 hax = newplot (hax);
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	93 elseif (isempty (hax))
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	94 hax = gca ();
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	95 endif
17692 38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	96
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	97 if (do_new)
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	98 htmp = image (x, y, img, "cdatamapping", "scaled", varargin{chararg:end});
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	99 else
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	100 htmp = image ("cdatamapping", "scaled", varargin{:});
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	101 endif
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	102
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	103 if (do_new && ! ishold (hax))
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	104 ## use given climits or guess them from the matrix
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	105 if (numel (climits) == 2 && climits(1) <= climits(2))
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	106 set (hax, "clim", climits);
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	107 elseif (! isempty (climits))
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	108 error ("imagesc: CLIMITS must be in form [lo, hi]");
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	109 endif
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	110 endif
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	111 unwind_protect_cleanup
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	112 if (! isempty (oldfig))
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	113 set (0, "currentfigure", oldfig);
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	114 endif
38cf56b77274 Overhaul image, imagesc to use newplot and support low-level invocation form. Rik <rik@octave.org> parents: 17689 diff changeset	115 end_unwind_protect
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	116
e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	117 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	118 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	119 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	120
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 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	122
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
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 %!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	125 %! 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	126 %! 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	127 %! 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	128 %! 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	129 %! 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	130 %! 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	131 %! 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	132 %! 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	133 %! 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	134 %! 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	135 %! 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	136 %! 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	137 %! 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	138 %! 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	139 %! 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	140 %! 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	141 %! 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	142 %! title ("imagesc (-x, -y, img)");
559 4e826edfbc56 [project @ 1994-07-25 22:18:28 by jwe] jwe parents: diff changeset	143
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	144 %!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	145 %! 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	146 %! 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	147 %! 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	148 %! 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	149 %! 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	150 %! 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	151 %! 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	152 %! 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	153 %! 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	154 %! title ("two consecutive images");
6368 ec2a523713b5 [project @ 2007-02-28 22:07:24 by jwe] jwe parents: 6046 diff changeset	155
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	156 %!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	157 %! 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	158 %! 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	159 %! 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	160 %! 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	161 %! imagesc (g, g, sin (h));
22069 9121d6584f6a Overhaul graphics implementation of hold() (bug #43559). Rik <rik@octave.org> parents: 20852 diff changeset	162 %! hold on;
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	163 %! 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	164 %! 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	165 %! 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	166 %! 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	167 %! title ("image, line, image");
559 4e826edfbc56 [project @ 1994-07-25 22:18:28 by jwe] jwe parents: diff changeset	168
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	169 %!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	170 %! 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	171 %! 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	172 %! 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	173 %! 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	174 %! plot (g, 10.5 * ones (size (g)));
22069 9121d6584f6a Overhaul graphics implementation of hold() (bug #43559). Rik <rik@octave.org> parents: 20852 diff changeset	175 %! hold on;
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	176 %! 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	177 %! 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	178 %! 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	179 %! 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	180 %! 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	181 %! 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	182 %! title ("line, image, line, image, line");
7189 e8d953d03f6a [project @ 2007-11-26 20:42:09 by dbateman] dbateman parents: 7017 diff changeset	183

Mercurial > octave

annotate scripts/image/imagesc.m @ 22069:9121d6584f6a