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annotate scripts/plot/draw/reducevolume.m @ 27923:bd51beb6205e

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update formatting of copyright notices * Use <https://octave.org/copyright/> instead of <https://octave.org/COPYRIGHT.html/>. * For consistency with other comments in the Octave sources, use C++-style comments for copyright blocks in C and C++ files. * Use delimiters above and below copyright blocks that are appropriate for the language used in the file. * Eliminate extra spacing inside copyright blocks. * lex.ll (looks_like_copyright): Also allow newlines and carriage returns before the word "Copyright". * scripts/mk-doc.pl (gethelp): Also skip empty comment lines. * bp-table.cc, type.m: Adjust tests.
author John W. Eaton <jwe@octave.org>
date Wed, 08 Jan 2020 11:59:41 -0500
parents 1891570abac8
children a4268efb7334
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1 ########################################################################
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2 ##
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3 ## Copyright (C) 2016-2020 The Octave Project Developers
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4 ##
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5 ## See the file COPYRIGHT.md in the top-level directory of this
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6 ## distribution or <https://octave.org/copyright/>.
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7 ##
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8 ## This file is part of Octave.
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9 ##
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10 ## Octave is free software: you can redistribute it and/or modify it
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11 ## under the terms of the GNU General Public License as published by
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12 ## the Free Software Foundation, either version 3 of the License, or
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13 ## (at your option) any later version.
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14 ##
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15 ## Octave is distributed in the hope that it will be useful, but
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16 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 ## GNU General Public License for more details.
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19 ##
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20 ## You should have received a copy of the GNU General Public License
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21 ## along with Octave; see the file COPYING. If not, see
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22 ## <https://www.gnu.org/licenses/>.
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23 ##
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24 ########################################################################
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25
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26 ## -*- texinfo -*-
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27 ## @deftypefn {} {[@var{nx}, @var{ny}, @var{nz}, @var{nv}] =} reducevolume (@var{v}, @var{r})
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28 ## @deftypefnx {} {[@var{nx}, @var{ny}, @var{nz}, @var{nv}] =} reducevolume (@var{x}, @var{y}, @var{z}, @var{v}, @var{r})
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29 ## @deftypefnx {} {@var{nv} =} reducevolume (@dots{})
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30 ##
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31 ## Reduce the volume of the dataset in @var{v} according to the values in
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32 ## @var{r}.
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33 ##
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34 ## @var{v} is a matrix that is non-singleton in the first 3 dimensions.
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35 ##
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36 ## @var{r} can either be a vector of 3 elements representing the reduction
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37 ## factors in the x-, y-, and z-directions or a scalar, in which case the same
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38 ## reduction factor is used in all three dimensions.
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39 ##
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40 ## @code{reducevolume} reduces the number of elements of @var{v} by taking
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41 ## only every @var{r}-th element in the respective dimension.
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42 ##
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43 ## Optionally, @var{x}, @var{y}, and @var{z} can be supplied to represent the
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44 ## set of coordinates of @var{v}. They can either be matrices of the same size
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45 ## as @var{v} or vectors with sizes according to the dimensions of @var{v}, in
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46 ## which case they are expanded to matrices (@pxref{XREFmeshgrid,,meshgrid}).
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47 ##
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48 ## If @code{reducevolume} is called with two arguments then @var{x}, @var{y},
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49 ## and @var{z} are assumed to match the respective indices of @var{v}.
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50 ##
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51 ## The reduced matrix is returned in @var{nv}.
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52 ##
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53 ## Optionally, the reduced set of coordinates are returned in @var{nx},
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54 ## @var{ny}, and @var{nz}, respectively.
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55 ##
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56 ## Examples:
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57 ##
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58 ## @example
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59 ## @group
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60 ## @var{v} = reshape (1:6*8*4, [6 8 4]);
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61 ## @var{nv} = reducevolume (@var{v}, [4 3 2]);
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62 ## @end group
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63 ## @end example
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64 ##
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65 ## @example
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66 ## @group
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67 ## @var{v} = reshape (1:6*8*4, [6 8 4]);
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68 ## @var{x} = 1:3:24; @var{y} = -14:5:11; @var{z} = linspace (16, 18, 4);
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69 ## [@var{nx}, @var{ny}, @var{nz}, @var{nv}] = reducevolume (@var{x}, @var{y}, @var{z}, @var{v}, [4 3 2]);
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70 ## @end group
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71 ## @end example
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72 ##
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73 ## @seealso{isosurface, isonormals}
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74 ## @end deftypefn
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75
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76 ## Author: mmuetzel
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77
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78 function [nx, ny, nz, nv] = reducevolume (varargin)
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79
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80 if (nargin < 2 || nargin > 5)
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81 print_usage ();
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82 endif
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83
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84 [x, y, z, v, r] = __get_check_reducevolume_args__ (nargout, varargin{:});
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85
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86 [nx, ny, nz, nv] = __reducevolume__ (x, y, z, v, r);
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87
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88 if (nargout <= 1)
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89 nx = nv;
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90 endif
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91
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92 endfunction
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93
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94 function [x, y, z, v, r] = __get_check_reducevolume_args__ (naout, varargin)
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95
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96 x = y = z = [];
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97
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98 switch (nargin)
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99 case 3
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100 v = varargin{1};
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101 r = varargin{2};
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102
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103 case 6
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104 if (naout == 4)
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105 x = varargin{1};
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106 y = varargin{2};
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107 z = varargin{3};
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108 endif
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109 v = varargin{4};
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110 r = varargin{5};
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111
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112 otherwise
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113 error ("reducevolume: incorrect number of arguments");
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114
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115 endswitch
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116
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117 ## Check reduction values R
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118 if (isscalar (r))
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119 r = [r, r, r];
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120 elseif (numel (r) != 3)
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121 error (["reducevolume: reduction value R must be a scalar or " ...
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122 "a vector of length 3"]);
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123 endif
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124
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125 if (any (r < 1 | r != fix (r)))
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126 error ("reducevolume: reduction values R must be positive integers");
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
127 endif
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
128
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
129 ## Check dimensions of data
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
130 if (ndims (v) < 3)
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
131 error ("reducevolume: data V must have at least 3 dimensions");
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
132 endif
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
133
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
134 v_sz = size (v);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
135 if (any (v_sz(1:3) < 2))
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
136 error ("reducevolume: data must be a non-singleton 3-dimensional matrix");
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
137 endif
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
138
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
139 if (naout == 4)
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
140 if (isempty (x))
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
141 x = 1:size (v, 2);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
142 endif
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
143 if (isempty (y))
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
144 y = 1:size (v, 1);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
145 endif
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
146 if (isempty (z))
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
147 z = 1:size (v, 3);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
148 endif
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
149
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
150 ## check x
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
151 if (isvector (x) && length (x) == v_sz(2))
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
152 x = repmat (x(:)', [v_sz(1) 1 v_sz(3)]);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
153 elseif (! size_equal (v, x))
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
154 error ("reducevolume: X must match the size of data V");
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
155 endif
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
156
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
157 ## check y
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
158 if (isvector (y) && length (y) == v_sz(1))
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
159 y = repmat (y(:), [1 v_sz(2) v_sz(3)]);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
160 elseif (! size_equal (v, y))
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
161 error ("reducevolume: Y must match the size of data V");
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
162 endif
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
163
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
164 ## check z
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
165 if (isvector (z) && length (z) == v_sz(3))
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
166 z = repmat (reshape (z(:), [1 1 length(z)]), ...
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
167 [v_sz(1) v_sz(2) 1]);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
168 elseif (! size_equal (v, z))
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
169 error ("reducevolume: Z must match the size of data V");
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
170 endif
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
171
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
172 endif
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
173
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
174 endfunction
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
175
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
176 function [nx, ny, nz, nv] = __reducevolume__ (x, y, z, v, r)
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
177
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
178 v_sz = size (v);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
179 nv = v(1:r(2):end, 1:r(1):end, 1:r(3):end, :);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
180 nv_sz = size (nv);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
181 if (length (nv_sz) < 3 || min (nv_sz) < 2)
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
182 error ("reducevolume: reduction value R is too high");
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
183 endif
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
184 if (length (v_sz) > 3)
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
185 nv = reshape (nv, [nv_sz(1:3) v_sz(4:end)]);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
186 endif
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
187
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
188 if (isempty (x))
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
189 nx = ny = nz = [];
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
190 else
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
191 nx = x(1:r(2):end, 1:r(1):end, 1:r(3):end);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
192 ny = y(1:r(2):end, 1:r(1):end, 1:r(3):end);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
193 nz = z(1:r(2):end, 1:r(1):end, 1:r(3):end);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
194 endif
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
195
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
196 endfunction
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
197
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
198
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
199 %!shared v, x, y, z, xx, yy, zz
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
200 %! v = reshape (1:6*8*4, [6 8 4]);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
201 %! x = 1:3:22; y = -14:5:11; z = linspace (16, 18, 4);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
202 %! [xx, yy, zz] = meshgrid (x, y, z);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
203
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
204 ## two inputs, one output
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
205 %!test
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
206 %! nv = reducevolume (v, [4 3 2]);
22295
12f1d273d22a maint: Remove trailing spaces from code.
Rik <rik@octave.org>
parents: 22231
diff changeset
207 %! nv_expected = [1 25; 4 28]; nv_expected(:,:,2) = [97 121; 100 124];
22231
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
208 %! assert (nv, nv_expected);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
209
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
210 ## two inputs, four outputs
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
211 %!test
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
212 %! [nx, ny, nz, nv] = reducevolume (v, [4 3 2]);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
213 %! nx_expected(1:2,1,1:2) = 1; nx_expected(:,2,:) = 5;
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
214 %! ny_expected(1,1:2,1:2) = 1; ny_expected(2,:,:) = 4;
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
215 %! nz_expected(1:2,1:2,1) = 1; nz_expected(:,:,2) = 3;
22295
12f1d273d22a maint: Remove trailing spaces from code.
Rik <rik@octave.org>
parents: 22231
diff changeset
216 %! nv_expected = [1 25; 4 28]; nv_expected(:,:,2) = [97 121; 100 124];
22231
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
217 %! assert (nx, nx_expected);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
218 %! assert (ny, ny_expected);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
219 %! assert (nz, nz_expected);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
220 %! assert (nv, nv_expected);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
221
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
222 ## five inputs, one output
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
223 %!test
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
224 %! nv = reducevolume (x, y, z, v, [4 3 2]);
22295
12f1d273d22a maint: Remove trailing spaces from code.
Rik <rik@octave.org>
parents: 22231
diff changeset
225 %! nv_expected = [1 25; 4 28]; nv_expected(:,:,2) = [97 121; 100 124];
22231
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
226 %! assert (nv, nv_expected);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
227
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
228 ## five inputs, four outputs (coordinates are vectors)
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
229 %!test
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
230 %! [nx, ny, nz, nv] = reducevolume (x, y, z, v, [4 3 2]);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
231 %! nx_expected(1:2,1,1:2) = x(1); nx_expected(:,2,:) = x(5);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
232 %! ny_expected(1,1:2,1:2) = y(1); ny_expected(2,:,:) = y(4);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
233 %! nz_expected(1:2,1:2,1) = z(1); nz_expected(:,:,2) = z(3);
22295
12f1d273d22a maint: Remove trailing spaces from code.
Rik <rik@octave.org>
parents: 22231
diff changeset
234 %! nv_expected = [1 25; 4 28]; nv_expected(:,:,2) = [97 121; 100 124];
22231
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
235 %! assert (nx, nx_expected);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
236 %! assert (ny, ny_expected);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
237 %! assert (nz, nz_expected);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
238 %! assert (nv, nv_expected);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
239
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
240 ## five inputs, four outputs (coordinates are matrices)
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
241 %!test
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
242 %! [nx, ny, nz, nv] = reducevolume (xx, yy, zz, v, [4 3 2]);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
243 %! nx_expected(1:2,1,1:2) = x(1); nx_expected(:,2,:) = x(5);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
244 %! ny_expected(1,1:2,1:2) = y(1); ny_expected(2,:,:) = y(4);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
245 %! nz_expected(1:2,1:2,1) = z(1); nz_expected(:,:,2) = z(3);
22295
12f1d273d22a maint: Remove trailing spaces from code.
Rik <rik@octave.org>
parents: 22231
diff changeset
246 %! nv_expected = [1 25; 4 28]; nv_expected(:,:,2) = [97 121; 100 124];
22231
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
247 %! assert (nx, nx_expected);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
248 %! assert (ny, ny_expected);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
diff changeset
249 %! assert (nz, nz_expected);
01ba6ebc52e4 Add function "reducevolume" (patch #8856).
Markus Muetzel <markus.muetzel@gmx.de>
parents:
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250 %! assert (nv, nv_expected);
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251
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252 ## five inputs, four outputs (coordinates are matrices, R is scalar)
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253 %!test
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254 %! [nx, ny, nz, nv] = reducevolume (xx, yy, zz, v, 3);
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255 %! nx_expected(1:2,1,1:2) = x(1); nx_expected(:,2,:) = x(4);
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256 %! nx_expected(:,3,:) = x(7);
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257 %! ny_expected(1,1:3,1:2) = y(1); ny_expected(2,:,:) = y(4);
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258 %! nz_expected(1:2,1:3,1) = z(1); nz_expected(:,:,2) = z(4);
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259 %! nv_expected = [1 19 37; 4 22 40];
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260 %! nv_expected(:,:,2) = [145 163 181; 148 166 184];
22231
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261 %! assert (nx, nx_expected);
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262 %! assert (ny, ny_expected);
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263 %! assert (nz, nz_expected);
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264 %! assert (nv, nv_expected);
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265
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266 ## Test for each error
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267 %!test
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268 %!error reducevolume ()
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269 %!error reducevolume (1)
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270 %!error reducevolume (1,2,3,4,5,6)
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271 %!error <incorrect number of arguments> reducevolume (1, 2, 3)
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272 %!error <R must be a scalar or a vector of length 3> reducevolume (v, [])
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273 %!error <R must be a scalar or a vector of length 3> reducevolume (v, [1 2])
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274 %!error <reduction values R must be positive integers> reducevolume (v, 0)
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275 %!error <reduction values R must be positive integers> reducevolume (v, 1.5)
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276 %!error <data V must have at least 3 dimensions>
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277 %! v = reshape(1:6*8, [6 8]);
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278 %! [nv] = reducevolume (v, [4 3 2]);
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279 %!error <data must be a non-singleton 3-dimensional matrix>
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280 %! v = reshape(1:6*8, [6 1 8]);
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281 %! nv = reducevolume (v, [4 3 2]);
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282 %!error <X must match the size of data V>
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283 %! x = 1:2:24;
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284 %! [nx, ny, nz, nv] = reducevolume (x, y, z, v, [4 3 2]);
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285 %!error <Y must match the size of data V>
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286 %! y = -14:6:11;
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287 %! [nx, ny, nz, nv] = reducevolume (x, y, z, v, [4 3 2]);
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288 %!error <Z must match the size of data V>
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289 %! z = linspace (16, 18, 5);
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290 %! [nx, ny, nz, nv] = reducevolume (x, y, z, v, [4 3 2]);
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291 %!error <reduction value R is too high> [nv] = reducevolume (v, 5)
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292 %!error <reduction value R is too high> [nv] = reducevolume (v, [4 7 2])