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annotate scripts/plot/draw/trisurf.m @ 19627:446c46af4b42 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 4197fc428c7d
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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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19 ## -*- texinfo -*-
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20 ## @deftypefn {Function File} {} trisurf (@var{tri}, @var{x}, @var{y}, @var{z}, @var{c})
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21 ## @deftypefnx {Function File} {} trisurf (@var{tri}, @var{x}, @var{y}, @var{z})
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22 ## @deftypefnx {Function File} {} trisurf (@dots{}, @var{prop}, @var{val}, @dots{})
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23 ## @deftypefnx {Function File} {@var{h} =} trisurf (@dots{})
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24 ## Plot a 3-D triangular surface.
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25 ##
17122
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26 ## In contrast to @code{surf}, which plots a surface mesh using rectangles,
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27 ## @code{trisurf} plots the mesh using triangles.
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28 ##
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29 ## @var{tri} is typically the output of a Delaunay triangulation over the
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30 ## grid of @var{x}, @var{y}. Every row of @var{tri} represents one triangle
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31 ## and contains three indices into [@var{x}, @var{y}] which are the
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32 ## vertices of the triangles in the x-y plane. @var{z} determines the
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33 ## height above the plane of each vertex.
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34 ##
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35 ## The color of the trimesh is computed by linearly scaling the @var{z} values
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36 ## to fit the range of the current colormap. Use @code{caxis} and/or
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37 ## change the colormap to control the appearance.
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38 ##
eaab03308c0b doc: Rewrite docstrings for most plot functions.
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39 ## Optionally, the color of the mesh can be specified independently of @var{z}
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40 ## by supplying a color matrix, @var{c}. If @var{z} has N elements, then
0fa126e9944e trisurf.m: Overhaul function.
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41 ## @var{c} should be an Nx1 vector for colormap data or an Nx3 matrix for
0fa126e9944e trisurf.m: Overhaul function.
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42 ## RGB data.
17122
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43 ##
eaab03308c0b doc: Rewrite docstrings for most plot functions.
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44 ## Any property/value pairs are passed directly to the underlying patch object.
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45 ##
eaab03308c0b doc: Rewrite docstrings for most plot functions.
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46 ## The optional return value @var{h} is a graphics handle to the created patch
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47 ## object.
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48 ## @seealso{surf, triplot, trimesh, delaunay, patch, shading}
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49 ## @end deftypefn
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50
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51 function h = trisurf (tri, x, y, z, varargin)
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52
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53 if (nargin < 4)
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54 print_usage ();
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55 endif
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56
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57 if (nargin > 4 && isnumeric (varargin{1}))
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58 c = varargin{1};
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59 varargin(1) = [];
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60 if (isvector (c))
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61 if (numel (c) != numel (z))
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62 error ("trisurf: C must have 'numel (Z)' elements");
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63 endif
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64 c = c(:);
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65 elseif (rows (c) != numel (z) || columns (c) != 3)
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66 error ("trisurf: TrueColor C matrix must be 'numel (Z)' rows by 3 columns");
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67 endif
17440
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68 else
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69 c = z(:);
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70 endif
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71 ## FIXME: Is all this extra input parsing necessary?
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72 ## Is it for Matlab compatibility?
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73 if (! any (strcmpi (varargin, "FaceColor")))
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74 nfc = numel (varargin) + 1;
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75 varargin(nfc+(0:1)) = {"FaceColor", "flat"};
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76 else
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77 nfc = find (any (strcmpi (varargin, "FaceColor")), 1);
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78 endif
0fa126e9944e trisurf.m: Overhaul function.
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79 if (! any (strcmpi (varargin, "EdgeColor"))
0fa126e9944e trisurf.m: Overhaul function.
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80 && strcmpi (varargin{nfc+1}, "interp"))
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81 varargin(end+(1:2)) = {"EdgeColor", "none"};
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82 endif
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83
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84 hax = newplot ();
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85
0fa126e9944e trisurf.m: Overhaul function.
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86 htmp = patch ("Faces", tri, "Vertices", [x(:), y(:), z(:)],
0fa126e9944e trisurf.m: Overhaul function.
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87 "FaceVertexCData", c, varargin{:});
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88
0fa126e9944e trisurf.m: Overhaul function.
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89 if (! ishold ())
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diff changeset
90 set (hax, "view", [-37.5, 30], "box", "off",
0fa126e9944e trisurf.m: Overhaul function.
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91 "xgrid", "on", "ygrid", "on", "zgrid", "on");
0fa126e9944e trisurf.m: Overhaul function.
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92 endif
0fa126e9944e trisurf.m: Overhaul function.
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93
0fa126e9944e trisurf.m: Overhaul function.
Rik <rik@octave.org>
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94 if (nargout > 0)
0fa126e9944e trisurf.m: Overhaul function.
Rik <rik@octave.org>
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95 h = htmp;
9110
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96 endif
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97
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98 endfunction
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99
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100
14108
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101 %!demo
14237
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102 %! clf;
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103 %! colormap ('default');
14108
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104 %! N = 31;
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105 %! [x, y] = meshgrid (1:N);
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106 %! tri = delaunay (x(:), y(:));
14108
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107 %! z = peaks (N);
14245
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108 %! h = trisurf (tri, x, y, z, 'facecolor', 'interp');
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109 %! axis tight;
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110 %! zlim auto;
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111 %! title (sprintf ('facecolor = %s', get (h, 'facecolor')));
14108
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112
5be545210fe3 Trisurf() improvements.
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113 %!demo
14237
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114 %! clf;
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115 %! colormap ('default');
14108
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116 %! N = 31;
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117 %! [x, y] = meshgrid (1:N);
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118 %! tri = delaunay (x(:), y(:));
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119 %! z = peaks (N);
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120 %! h = trisurf (tri, x, y, z, 'facecolor', 'flat');
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121 %! axis tight;
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122 %! zlim auto;
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123 %! title (sprintf ('facecolor = %s', get (h, 'facecolor')));
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124
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125 %!demo
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126 %! clf;
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127 %! colormap ('default');
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128 %! old_state = rand ('state');
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129 %! restore_state = onCleanup (@() rand ('state', old_state));
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130 %! rand ('state', 10);
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131 %! N = 10;
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132 %! x = 3 - 6 * rand (N, N);
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133 %! y = 3 - 6 * rand (N, N);
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134 %! z = peaks (x, y);
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135 %! tri = delaunay (x(:), y(:));
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136 %! trisurf (tri, x(:), y(:), z(:));
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137
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138 %!demo
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139 %! clf;
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140 %! colormap ('default');
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141 %! x = rand (100, 1);
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142 %! y = rand (100, 1);
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143 %! z = x.^2 + y.^2;
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144 %! tri = delaunay (x, y);
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145 %! trisurf (tri, x, y, z);
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146
482cf3aad915 trisurf.m: Set default edgecolor as Matlab does. Add demos.
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147 %!demo
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148 %! clf;
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149 %! colormap ('default');
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150 %! x = rand (100, 1);
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151 %! y = rand (100, 1);
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diff changeset
152 %! z = x.^2 + y.^2;
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 12792
diff changeset
153 %! tri = delaunay (x, y);
14245
4506eade9f04 Use Matlab coding conventions for demos in plot/ directory.
Rik <octave@nomad.inbox5.com>
parents: 14237
diff changeset
154 %! trisurf (tri, x, y, z, 'facecolor', 'interp');
12524
482cf3aad915 trisurf.m: Set default edgecolor as Matlab does. Add demos.
Ben Abbott <bpabbott@mac.com>
parents: 12187
diff changeset
155
482cf3aad915 trisurf.m: Set default edgecolor as Matlab does. Add demos.
Ben Abbott <bpabbott@mac.com>
parents: 12187
diff changeset
156 %!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
157 %! clf;
14247
c4fa5e0b6193 test: Make surface demos reproducible by setting colormap to default at start of demo.
Rik <octave@nomad.inbox5.com>
parents: 14245
diff changeset
158 %! colormap ('default');
12524
482cf3aad915 trisurf.m: Set default edgecolor as Matlab does. Add demos.
Ben Abbott <bpabbott@mac.com>
parents: 12187
diff changeset
159 %! x = rand (100, 1);
482cf3aad915 trisurf.m: Set default edgecolor as Matlab does. Add demos.
Ben Abbott <bpabbott@mac.com>
parents: 12187
diff changeset
160 %! y = rand (100, 1);
13141
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 12792
diff changeset
161 %! z = x.^2 + y.^2;
e81ddf9cacd5 maint: untabify and remove trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 12792
diff changeset
162 %! tri = delaunay (x, y);
14245
4506eade9f04 Use Matlab coding conventions for demos in plot/ directory.
Rik <octave@nomad.inbox5.com>
parents: 14237
diff changeset
163 %! trisurf (tri, x, y, z, 'facecolor', 'interp', 'edgecolor', 'k');
12524
482cf3aad915 trisurf.m: Set default edgecolor as Matlab does. Add demos.
Ben Abbott <bpabbott@mac.com>
parents: 12187
diff changeset
164
17440
0fa126e9944e trisurf.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
165 %% Test input validation
0fa126e9944e trisurf.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
166 %!error trisurf ()
0fa126e9944e trisurf.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
167 %!error trisurf (1)
0fa126e9944e trisurf.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
168 %!error trisurf (1,2)
0fa126e9944e trisurf.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
169 %!error trisurf (1,2,3)
0fa126e9944e trisurf.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
170 %!error <C must have 'numel \(Z\)' elements> trisurf (1,2,3,4,[5 6])
0fa126e9944e trisurf.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
171 %!error <C must have 'numel \(Z\)' elements> trisurf (1,2,3,4,[5 6]')
0fa126e9944e trisurf.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
172 %!error <TrueColor C matrix must> trisurf ([1;1],[2;2],[3;3],[4;4],zeros(3,3))
0fa126e9944e trisurf.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
173 %!error <TrueColor C matrix must> trisurf ([1;1],[2;2],[3;3],[4;4],zeros(2,2))
0fa126e9944e trisurf.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
174