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plotmatrix.m: Fix regression in %!demo introduced by in-place operators. * plotmatrix.m: Rename nargin variable to narg variable to avoid shadowing nargin() function.
author Rik <rik@octave.org>
date Fri, 25 Sep 2015 13:05:01 -0700
parents 777f26aa8e3e
children
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1 ## Copyright (C) 2009-2015 Martin Helm
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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} {[@var{cd}] =} isocolors (@var{c}, @var{v})
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21 ## @deftypefnx {Function File} {[@var{cd}] =} isocolors (@var{x}, @var{y}, @var{z}, @var{c}, @var{v})
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22 ## @deftypefnx {Function File} {[@var{cd}] =} isocolors (@var{x}, @var{y}, @var{z}, @var{r}, @var{g}, @var{b}, @var{v})
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23 ## @deftypefnx {Function File} {[@var{cd}] =} isocolors (@var{r}, @var{g}, @var{b}, @var{v})
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24 ## @deftypefnx {Function File} {[@var{cd}] =} isocolors (@dots{}, @var{p})
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25 ## @deftypefnx {Function File} {} isocolors (@dots{})
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26 ##
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27 ## Compute isosurface colors.
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28 ##
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29 ## If called with one output argument and the first input argument
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30 ## @var{c} is a three-dimensional array that contains color values and
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31 ## the second input argument @var{v} keeps the vertices of a geometry
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32 ## then return a matrix @var{cd} with color data information for the
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33 ## geometry at computed points
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34 ## @command{[x, y, z] = meshgrid (1:l, 1:m, 1:n)}. The output argument
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35 ## @var{cd} can be taken to manually set FaceVertexCData of a patch.
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36 ##
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37 ## If called with further input arguments @var{x}, @var{y} and @var{z}
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38 ## which are three--dimensional arrays of the same size than @var{c}
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39 ## then the color data is taken at those given points. Instead of the
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40 ## color data @var{c} this function can also be called with RGB values
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41 ## @var{r}, @var{g}, @var{b}. If input argumnets @var{x}, @var{y},
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42 ## @var{z} are not given then again @command{meshgrid} computed values
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43 ## are taken.
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44 ##
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45 ## Optionally, the patch handle @var{p} can be given as the last input
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46 ## argument to all variations of function calls instead of the vertices
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47 ## data @var{v}. Finally, if no output argument is given then directly
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48 ## change the colors of a patch that is given by the patch handle
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49 ## @var{p}.
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50 ##
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51 ## For example:
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52 ##
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53 ## @example
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54 ## function [] = isofinish (p)
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55 ## set (gca, "PlotBoxAspectRatioMode", "manual", ...
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56 ## "PlotBoxAspectRatio", [1 1 1]);
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57 ## set (p, "FaceColor", "interp");
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58 ## ## set (p, "FaceLighting", "flat");
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59 ## ## light ("Position", [1 1 5]); # Available with JHandles
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60 ## endfunction
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61 ##
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62 ## N = 15; # Increase number of vertices in each direction
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63 ## iso = .4; # Change isovalue to .1 to display a sphere
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64 ## lin = linspace (0, 2, N);
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65 ## [x, y, z] = meshgrid (lin, lin, lin);
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66 ## c = abs ((x-.5).^2 + (y-.5).^2 + (z-.5).^2);
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67 ## figure (); # Open another figure window
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68 ##
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69 ## subplot (2,2,1); view (-38, 20);
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70 ## [f, v] = isosurface (x, y, z, c, iso);
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71 ## p = patch ("Faces", f, "Vertices", v, "EdgeColor", "none");
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72 ## cdat = rand (size (c)); # Compute random patch color data
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73 ## isocolors (x, y, z, cdat, p); # Directly set colors of patch
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74 ## isofinish (p); # Call user function isofinish
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75 ##
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76 ## subplot (2,2,2); view (-38, 20);
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77 ## p = patch ("Faces", f, "Vertices", v, "EdgeColor", "none");
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78 ## [r, g, b] = meshgrid (lin, 2-lin, 2-lin);
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79 ## cdat = isocolors (x, y, z, c, v); # Compute color data vertices
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80 ## set (p, "FaceVertexCData", cdat); # Set color data manually
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81 ## isofinish (p);
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82 ##
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83 ## subplot (2,2,3); view (-38, 20);
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84 ## p = patch ("Faces", f, "Vertices", v, "EdgeColor", "none");
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85 ## cdat = isocolors (r, g, b, c, p); # Compute color data patch
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86 ## set (p, "FaceVertexCData", cdat); # Set color data manually
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87 ## isofinish (p);
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88 ##
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89 ## subplot (2,2,4); view (-38, 20);
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90 ## p = patch ("Faces", f, "Vertices", v, "EdgeColor", "none");
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91 ## r = g = b = repmat ([1:N] / N, [N, 1, N]); # Black to white
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92 ## cdat = isocolors (x, y, z, r, g, b, v);
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93 ## set (p, "FaceVertexCData", cdat);
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94 ## isofinish (p);
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95 ## @end example
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96 ##
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97 ## @seealso{isosurface, isonormals}
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98 ## @end deftypefn
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99
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100 ## Author: Martin Helm <martin@mhelm.de>
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101
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102 function varargout = isocolors (varargin)
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103 calc_rgb = false;
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104 switch (nargin)
9110
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105 case 2
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parents:
diff changeset
106 c = varargin{1};
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diff changeset
107 vp = varargin{2};
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parents:
diff changeset
108 x = 1:size (c, 2);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
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109 y = 1:size (c, 1);
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parents:
diff changeset
110 z = 1:size (c, 3);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
111 case 4
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
112 calc_rgb = true;
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
113 R = varargin{1};
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
114 G = varargin{2};
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
115 B = varargin{3};
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
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parents:
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116 vp = varargin{4};
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
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117 x = 1:size (R, 1);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
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parents:
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118 y = 1:size (R, 2);
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parents:
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119 z = 1:size (R, 3);
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David Bateman <dbateman@free.fr>
parents:
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120 case 5
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parents:
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121 x = varargin{1};
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parents:
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122 y = varargin{2};
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123 z = varargin{3};
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parents:
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124 c = varargin{4};
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125 vp = varargin{5};
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parents:
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126 case 7
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David Bateman <dbateman@free.fr>
parents:
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127 calc_rgb = true;
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parents:
diff changeset
128 x = varargin{1};
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parents:
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129 y = varargin{2};
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parents:
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130 z = varargin{3};
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131 R = varargin{4};
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132 G = varargin{5};
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parents:
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133 B = varargin{6};
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David Bateman <dbateman@free.fr>
parents:
diff changeset
134 vp = varargin{7};
11587
c792872f8942 all script files: untabify and strip trailing whitespace
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
135 otherwise
9110
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136 print_usage ();
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David Bateman <dbateman@free.fr>
parents:
diff changeset
137 endswitch
19734
00e31f316a3a Fix Matlab incompatibility of "ismatrix" (bug #42422).
Kai T. Ohlhus <k.ohlhus@gmail.com>
parents: 19731
diff changeset
138 if (isnumeric (vp) && columns (vp) == 3)
9110
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parents:
diff changeset
139 pa = [];
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David Bateman <dbateman@free.fr>
parents:
diff changeset
140 v = vp;
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David Bateman <dbateman@free.fr>
parents:
diff changeset
141 elseif ( ishandle (vp) )
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David Bateman <dbateman@free.fr>
parents:
diff changeset
142 pa = vp;
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David Bateman <dbateman@free.fr>
parents:
diff changeset
143 v = get (pa, "Vertices");
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
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parents:
diff changeset
144 else
11120
a44f979a35ce style fixes for some .m files
John W. Eaton <jwe@octave.org>
parents: 11104
diff changeset
145 error ("isocolors: last argument is not a vertex list or patch handle");
9110
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parents:
diff changeset
146 endif
11120
a44f979a35ce style fixes for some .m files
John W. Eaton <jwe@octave.org>
parents: 11104
diff changeset
147 if (calc_rgb)
14872
c2dbdeaa25df maint: use rows() and columns() to clarify m-files.
Rik <octave@nomad.inbox5.com>
parents: 14868
diff changeset
148 new_col = zeros (rows (v), 3);
11120
a44f979a35ce style fixes for some .m files
John W. Eaton <jwe@octave.org>
parents: 11104
diff changeset
149 new_col(:,1) = __interp_cube__ (x, y, z, R, v, "values" );
a44f979a35ce style fixes for some .m files
John W. Eaton <jwe@octave.org>
parents: 11104
diff changeset
150 new_col(:,2) = __interp_cube__ (x, y, z, G, v, "values" );
a44f979a35ce style fixes for some .m files
John W. Eaton <jwe@octave.org>
parents: 11104
diff changeset
151 new_col(:,3) = __interp_cube__ (x, y, z, B, v, "values" );
9110
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diff changeset
152 else
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parents:
diff changeset
153 new_col = __interp_cube__ (x, y, z, c, v, "values" );
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parents:
diff changeset
154 endif
11120
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John W. Eaton <jwe@octave.org>
parents: 11104
diff changeset
155 switch (nargout)
9110
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David Bateman <dbateman@free.fr>
parents:
diff changeset
156 case 0
19867
9fc020886ae9 maint: Clean up m-files to follow Octave coding conventions.
Rik <rik@octave.org>
parents: 19734
diff changeset
157 if (! isempty (pa))
9110
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parents:
diff changeset
158 set (pa, "FaceVertexCData", new_col);
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
159 endif
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
160 case 1
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David Bateman <dbateman@free.fr>
parents:
diff changeset
161 varargout = {new_col};
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
162 otherwise
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
163 print_usage ();
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
164 endswitch
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
165 endfunction
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
166
14363
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents: 14327
diff changeset
167
9110
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
168 %!test
14363
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents: 14327
diff changeset
169 %! [x, y, z] = meshgrid (0:.5:2, 0:.5:2, 0:.5:2);
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents: 14327
diff changeset
170 %! c = (x-.5).^2 + (y-.5).^2 + (z-.5).^2;
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents: 14327
diff changeset
171 %! [f, v] = isosurface (x, y, z, c, .4);
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents: 14327
diff changeset
172 %! cdat = isocolors (x, y, z, c, v);
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents: 14327
diff changeset
173 %! assert (rows (cdat) == rows (v));
9110
22ae6b3411a7 Add isocolor, isonormals and isosurface functions (For Martin Helm). Add 3D filled triangular patches and the trisurf function
David Bateman <dbateman@free.fr>
parents:
diff changeset
174 ## Can't create a patch handle for tests without a figure
14363
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks
Rik <octave@nomad.inbox5.com>
parents: 14327
diff changeset
175