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annotate scripts/plot/draw/meshz.m @ 19790:446c46af4b42 stable

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strip trailing whitespace from most source files * Makefile.am, NEWS, build-aux/common.mk, configure.ac, doc/Makefile.am, doc/doxyhtml/Makefile.am, doc/interpreter/Makefile.am, doc/interpreter/arith.txi, doc/interpreter/audio.txi, doc/interpreter/basics.txi, doc/interpreter/bugs.txi, doc/interpreter/container.txi, doc/interpreter/cp-idx.txi, doc/interpreter/data.txi, doc/interpreter/debug.txi, doc/interpreter/diagperm.txi, doc/interpreter/diffeq.txi, doc/interpreter/doccheck/README, doc/interpreter/doccheck/spellcheck, doc/interpreter/emacs.txi, doc/interpreter/errors.txi, doc/interpreter/eval.txi, doc/interpreter/expr.txi, doc/interpreter/external.txi, doc/interpreter/fn-idx.txi, doc/interpreter/func.txi, doc/interpreter/geometry.txi, doc/interpreter/geometryimages.m, doc/interpreter/gpl.txi, doc/interpreter/grammar.txi, doc/interpreter/gui.txi, doc/interpreter/image.txi, doc/interpreter/install.txi, doc/interpreter/interp.txi, doc/interpreter/interpimages.m, 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scripts/statistics/distributions/unifrnd.m, scripts/statistics/distributions/wblrnd.m, scripts/statistics/models/module.mk, scripts/statistics/tests/kruskal_wallis_test.m, scripts/strings/base2dec.m, scripts/strings/deblank.m, scripts/strings/dec2base.m, scripts/strings/dec2bin.m, scripts/strings/dec2hex.m, scripts/strings/mat2str.m, scripts/strings/ostrsplit.m, scripts/strings/regexptranslate.m, scripts/strings/str2num.m, scripts/strings/strcat.m, scripts/strings/strjoin.m, scripts/strings/strsplit.m, scripts/strings/strtok.m, scripts/strings/strtrim.m, scripts/strings/strtrunc.m, scripts/strings/substr.m, scripts/testfun/__run_test_suite__.m, scripts/testfun/speed.m, scripts/testfun/test.m, scripts/time/asctime.m, scripts/time/datenum.m, scripts/time/datevec.m, scripts/time/weekday.m, src/Makefile.am, test/Makefile.am, test/build-bc-overload-tests.sh, test/build-sparse-tests.sh, test/jit.tst, test/line-continue.tst: Strip trailing whitespace.
author John W. Eaton <jwe@octave.org>
date Tue, 20 Jan 2015 08:26:57 -0500
parents d63878346099
children 0e1f5a750d00
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d63878346099 maint: Update copyright notices for release.
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1 ## Copyright (C) 2007-2013 David Bateman
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 3 of the License, or (at
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8 ## your option) any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Function File} {} meshz (@var{x}, @var{y}, @var{z})
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21 ## @deftypefnx {Function File} {} meshz (@var{z})
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22 ## @deftypefnx {Function File} {} meshz (@dots{}, @var{c})
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23 ## @deftypefnx {Function File} {} meshz (@dots{}, @var{prop}, @var{val}, @dots{})
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24 ## @deftypefnx {Function File} {} meshz (@var{hax}, @dots{})
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25 ## @deftypefnx {Function File} {@var{h} =} meshz (@dots{})
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26 ## Plot a 3-D wireframe mesh with a surrounding curtain.
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27 ##
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28 ## The wireframe mesh is plotted using rectangles. The vertices of the
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29 ## rectangles [@var{x}, @var{y}] are typically the output of @code{meshgrid}.
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30 ## over a 2-D rectangular region in the x-y plane. @var{z} determines the
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31 ## height above the plane of each vertex. If only a single @var{z} matrix is
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32 ## given, then it is plotted over the meshgrid
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33 ## @code{@var{x} = 1:columns (@var{z}), @var{y} = 1:rows (@var{z})}.
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diff changeset
34 ## Thus, columns of @var{z} correspond to different @var{x} values and rows
17281
bc924baa2c4e doc: Add new @qcode macro for code samples which are quoted.
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parents: 17211
diff changeset
35 ## of @var{z} correspond to different @var{y} values.
17122
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diff changeset
36 ##
17450
43e0b711d7e0 doc: Correct accidental capitalization @var{Z} in mesh/surf docstrings.
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diff changeset
37 ## The color of the mesh is computed by linearly scaling the @var{z} values
17122
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diff changeset
38 ## to fit the range of the current colormap. Use @code{caxis} and/or
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diff changeset
39 ## change the colormap to control the appearance.
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diff changeset
40 ##
eaab03308c0b doc: Rewrite docstrings for most plot functions.
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diff changeset
41 ## Optionally the color of the mesh can be specified independently of @var{z}
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42 ## by supplying a color matrix, @var{c}.
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diff changeset
43 ##
eaab03308c0b doc: Rewrite docstrings for most plot functions.
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diff changeset
44 ## Any property/value pairs are passed directly to the underlying surface
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diff changeset
45 ## object.
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diff changeset
46 ##
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diff changeset
47 ## If the first argument @var{hax} is an axes handle, then plot into this axis,
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diff changeset
48 ## rather than the current axes returned by @code{gca}.
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49 ##
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diff changeset
50 ## The optional return value @var{h} is a graphics handle to the created
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diff changeset
51 ## surface object.
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diff changeset
52 ##
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diff changeset
53 ## @seealso{mesh, meshc, contour, surf, surface, waterfall, meshgrid, hidden, shading, colormap, caxis}
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54 ## @end deftypefn
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diff changeset
55
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diff changeset
56 function h = meshz (varargin)
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57
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diff changeset
58 if (! all (cellfun ("isreal", varargin)))
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diff changeset
59 error ("meshz: X, Y, Z, C arguments must be real");
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60 endif
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diff changeset
61
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diff changeset
62 [hax, varargin, nargin] = __plt_get_axis_arg__ ("meshz", varargin{:});
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diff changeset
63
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diff changeset
64 ## Find where property/value pairs start
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diff changeset
65 charidx = find (cellfun ("isclass", varargin, "char"), 1);
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diff changeset
66
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diff changeset
67 have_c = false;
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diff changeset
68 if (isempty (charidx))
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diff changeset
69 if (nargin == 2 || nargin == 4)
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diff changeset
70 have_c = true;
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diff changeset
71 charidx = nargin; # bundle C matrix back into varargin
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diff changeset
72 else
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diff changeset
73 charidx = nargin + 1;
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diff changeset
74 endif
c9346014fed2 Validate inputs are real for mesh, meshc, meshz functions.
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parents: 14872
diff changeset
75 endif
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parents: 14872
diff changeset
76
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diff changeset
77 if (charidx == 2)
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diff changeset
78 z = varargin{1};
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diff changeset
79 [m, n] = size (z);
7216
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diff changeset
80 x = 1:n;
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diff changeset
81 y = (1:m).';
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diff changeset
82 else
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diff changeset
83 x = varargin{1};
a730e47fda4d [project @ 2007-11-28 02:32:41 by jwe]
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diff changeset
84 y = varargin{2};
a730e47fda4d [project @ 2007-11-28 02:32:41 by jwe]
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diff changeset
85 z = varargin{3};
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diff changeset
86 endif
71c03c7239fb [project @ 2007-11-28 02:19:25 by jwe]
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diff changeset
87
71c03c7239fb [project @ 2007-11-28 02:19:25 by jwe]
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diff changeset
88 if (isvector (x) && isvector (y))
71c03c7239fb [project @ 2007-11-28 02:19:25 by jwe]
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diff changeset
89 x = [x(1), x(:).', x(end)];
71c03c7239fb [project @ 2007-11-28 02:19:25 by jwe]
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diff changeset
90 y = [y(1); y(:); y(end)];
71c03c7239fb [project @ 2007-11-28 02:19:25 by jwe]
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diff changeset
91 else
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diff changeset
92 x = [x(1,1), x(1,:), x(1,end);
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diff changeset
93 x(:,1), x, x(:,end);
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diff changeset
94 x(end,1), x(end,:), x(end,end)];
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parents: 14872
diff changeset
95 y = [y(1,1), y(1,:), y(1,end);
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diff changeset
96 y(:,1), y, y(:,end);
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diff changeset
97 y(end,1), y(end,:), y(end,end)];
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diff changeset
98 endif
71c03c7239fb [project @ 2007-11-28 02:19:25 by jwe]
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diff changeset
99
14868
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Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
100 zref = min (z(isfinite (z)));
14872
c2dbdeaa25df maint: use rows() and columns() to clarify m-files.
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parents: 14868
diff changeset
101 z = [zref .* ones(1, columns(z) + 2);
c2dbdeaa25df maint: use rows() and columns() to clarify m-files.
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diff changeset
102 zref .* ones(rows(z), 1), z, zref .* ones(rows(z), 1);
17066
328b579e08e9 mesh.m,meshc.m,meshz.m: Overhaul to use newplot and __plt_get_axis_arg__.
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parents: 16985
diff changeset
103 zref .* ones(1, columns(z) + 2)];
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diff changeset
104
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diff changeset
105 if (have_c)
4b834dbe4b3e meshz.m: Add support for color matrix input.
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diff changeset
106 c = varargin{charidx};
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diff changeset
107 cref = min (c(isfinite (c)));
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diff changeset
108 c = [cref .* ones(1, columns(c) + 2);
4b834dbe4b3e meshz.m: Add support for color matrix input.
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parents: 17126
diff changeset
109 cref .* ones(rows(c), 1), c, cref .* ones(rows(c), 1);
4b834dbe4b3e meshz.m: Add support for color matrix input.
Rik <rik@octave.org>
parents: 17126
diff changeset
110 cref .* ones(1, columns(c) + 2)];
4b834dbe4b3e meshz.m: Add support for color matrix input.
Rik <rik@octave.org>
parents: 17126
diff changeset
111 varargin(charidx) = c;
4b834dbe4b3e meshz.m: Add support for color matrix input.
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parents: 17126
diff changeset
112 endif
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diff changeset
113
17211
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Rik <rik@octave.org>
parents: 17190
diff changeset
114 oldfig = [];
17301
68bcac3c043a Correct inversion accidentally introduced in cset 87ba70043bfc.
Rik <rik@octave.org>
parents: 17281
diff changeset
115 if (! isempty (hax))
17211
87ba70043bfc Don't use ifelse in plot fcns to avoid unnecessary fcn evaluations.
Rik <rik@octave.org>
parents: 17190
diff changeset
116 oldfig = get (0, "currentfigure");
87ba70043bfc Don't use ifelse in plot fcns to avoid unnecessary fcn evaluations.
Rik <rik@octave.org>
parents: 17190
diff changeset
117 endif
7215
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diff changeset
118 unwind_protect
17066
328b579e08e9 mesh.m,meshc.m,meshz.m: Overhaul to use newplot and __plt_get_axis_arg__.
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parents: 16985
diff changeset
119 hax = newplot (hax);
17126
26589abbc78d Don't pass axis handle unnecessarily from high level to low level plot functions.
Rik <rik@octave.org>
parents: 17122
diff changeset
120 htmp = mesh (x, y, z, varargin{charidx:end});
7215
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diff changeset
121 unwind_protect_cleanup
17066
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diff changeset
122 if (! isempty (oldfig))
328b579e08e9 mesh.m,meshc.m,meshz.m: Overhaul to use newplot and __plt_get_axis_arg__.
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diff changeset
123 set (0, "currentfigure", oldfig);
328b579e08e9 mesh.m,meshc.m,meshz.m: Overhaul to use newplot and __plt_get_axis_arg__.
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parents: 16985
diff changeset
124 endif
7215
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diff changeset
125 end_unwind_protect
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parents: 7208
diff changeset
126
dd88d61d443f [project @ 2007-11-29 16:44:45 by jwe]
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diff changeset
127 if (nargout > 0)
16985
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diff changeset
128 h = htmp;
7215
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diff changeset
129 endif
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130
71c03c7239fb [project @ 2007-11-28 02:19:25 by jwe]
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diff changeset
131 endfunction
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132
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133
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diff changeset
134 %!demo
4b834dbe4b3e meshz.m: Add support for color matrix input.
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135 %! clf;
4b834dbe4b3e meshz.m: Add support for color matrix input.
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136 %! colormap ('default');
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diff changeset
137 %! Z = peaks ();
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138 %! meshz (Z);
17190
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139 %! title ('meshz() plot of peaks() function');
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diff changeset
140
df4c4b7708a4 Add titles and clean-up plotting %!demos.
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diff changeset
141 %!demo
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diff changeset
142 %! clf;
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diff changeset
143 %! colormap ('default');
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144 %! Z = peaks ();
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diff changeset
145 %! subplot (1,2,1)
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diff changeset
146 %! mesh (Z);
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diff changeset
147 %! daspect ([2.5, 2.5, 1]);
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diff changeset
148 %! title ('mesh() plot');
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diff changeset
149 %! subplot (1,2,2)
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diff changeset
150 %! meshz (Z);
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diff changeset
151 %! daspect ([2.5, 2.5, 1]);
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diff changeset
152 %! title ('meshz() plot');
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diff changeset
153
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diff changeset
154 %!demo
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diff changeset
155 %! clf;
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diff changeset
156 %! colormap ('default');
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diff changeset
157 %! [X,Y,Z] = peaks ();
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diff changeset
158 %! [fx, fy] = gradient (Z);
17163
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diff changeset
159 %! C = sqrt (fx.^2 + fy.^2);
4b834dbe4b3e meshz.m: Add support for color matrix input.
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diff changeset
160 %! meshz (X,Y,Z,C);
17190
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diff changeset
161 %! title ('meshz() plot with color determined by gradient');
17163
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diff changeset
162