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annotate scripts/ode/odeget.m @ 21546:f7f97d7e9294

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doc: Wrap m-file docstrings to 79 characters + newline (80 total). * isrecording.m, soundsc.m, delaunay3.m, cell2mat.m, cumtrapz.m, del2.m, inputParser.m, interp1.m, interp3.m, narginchk.m, profile.m, validateattributes.m, delaunayn.m, tsearchn.m, voronoin.m, brighten.m, cmunique.m, colorcube.m, imfinfo.m, imshow.m, edit.m, orderfields.m, run.m, warning_ids.m, ode23.m, ode45.m, odeget.m, integrate_adaptive.m, kahan.m, ode_struct_value_check.m, runge_kutta_23.m, fminunc.m, fsolve.m, fzero.m, pkg.m, build.m, specular.m, view.m, bar.m, barh.m, contour3.m, isosurface.m, line.m, pie.m, pie3.m, quiver3.m, scatter.m, scatter3.m, stem3.m, stemleaf.m, surfl.m, tetramesh.m, isfigure.m, mkpp.m, pchip.m, residue.m, splinefit.m, rmpref.m, unique.m, eigs.m, ilu.m, factor.m, factorial.m, gallery.m, hankel.m, histc.m, ols.m, finv.m, fpdf.m, kruskal_wallis_test.m, weekday.m: Wrap m-file docstrings to 79 characters + newline (80 total).
author Rik <rik@octave.org>
date Sun, 27 Mar 2016 15:50:01 -0700
parents 0fb9de5b7903
children bac0d6f07a3e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 ## Copyright (C) 2013, Roberto Porcu' <roberto.porcu@polimi.it>
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2 ## Copyright (C) 2006-2012, Thomas Treichl <treichl@users.sourceforge.net>
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3 ##
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4 ## This file is part of Octave.
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5 ##
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6 ## Octave is free software; you can redistribute it and/or modify it
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7 ## under the terms of the GNU General Public License as published by
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8 ## the Free Software Foundation; either version 3 of the License, or (at
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9 ## your option) any later version.
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10 ##
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11 ## Octave is distributed in the hope that it will be useful, but
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12 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 ## General Public License for more details.
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15 ##
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16 ## You should have received a copy of the GNU General Public License
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17 ## along with Octave; see the file COPYING. If not, see
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18 ## <http://www.gnu.org/licenses/>.
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19
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20 ## -*- texinfo -*-
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21 ## @deftypefn {} {@var{val} =} odeget (@var{ode_opt}, @var{field})
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22 ## @deftypefnx {} {@var{val} =} odeget (@var{ode_opt}, @var{field}, @var{default})
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23 ##
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24 ## Query the value of the property @var{field} in the ODE options structure
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25 ## @var{ode_opt}.
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26 ##
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27 ## If called with two input arguments and the first input argument
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28 ## @var{ode_opt} is an ODE option structure and the second input argument
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29 ## @var{field} is a string specifying an option name, then return the option
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30 ## value @var{val} corresponding to @var{field} from @var{ode_opt}.
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31 ##
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32 ## If called with an optional third input argument, and @var{field} is
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33 ## not set in the structure @var{ode_opt}, then return the default value
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34 ## @var{default} instead.
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35 ## @seealso{odeset}
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36 ## @end deftypefn
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37
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38 ## FIXME: 4th input argument "opt" is undocumented.
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39
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40 function val = odeget (ode_opt, field, default = [], opt = "")
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41
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42 ## Shortcut for quickly extracting option
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43 if (strncmp (opt, "fast", 4))
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44 try
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45 val = ode_opt.(field);
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46 if (strcmp (opt, "fast_not_empty") && isempty (val))
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47 val = default;
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48 endif
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49 catch
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50 val = default;
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51 end_try_catch
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52 return;
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53 endif
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54
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55 if (nargin < 1 || nargin > 4)
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56 print_usage ();
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57 endif
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58
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59 ## Shortcut for empty option structures
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60 if (isempty (ode_opt))
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61 if (nargin < 3)
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62 val = [];
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63 else
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64 val = default;
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65 endif
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66 return;
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67 endif
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68
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69 if (! isstruct (ode_opt))
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70 error ("odeget: ODE_OPT must be a valid ODE_STRUCT");
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71 elseif (! ischar (field))
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72 error ("odeget: FIELD must be a string");
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73 endif
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74
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75 ## Check if the given struct is a valid ODEOPT struct
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76 ode_struct_value_check ("odeget", ode_opt);
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77
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78 ## Define all the possible ODEOPT fields
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79 persistent options = known_option_names ();
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80
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81 exactmatch = true;
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82 match = find (strcmpi (field, options));
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83 if (isempty (match))
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84 match = find (strncmpi (field, options, length (field)));
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85 exactmatch = false;
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86 endif
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87
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88 if (isempty (match))
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89 ## Possibly a custom user-defined option
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90 try
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91 val = ode_opt.(field);
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92 catch
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93 warning ("Octave:invalid-input-arg",
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94 "odeget: no field '%s' exists in ODE_OPT\n", field);
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95 val = default;
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96 end_try_catch
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97 elseif (numel (match) == 1)
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98 if (! exactmatch)
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99 warning ("odeget:NoExactMatching",
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100 "odeget: no exact match for '%s'. Assuming '%s'.\n",
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101 field, options{match});
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102 endif
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103 val = [];
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104 try
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105 val = ode_opt.(options{match});
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106 end_try_catch
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107 if (isempty (val))
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108 val = default;
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109 endif
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110 else
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111 error ("odeget: no exact match for '%s'. Possible fields found: %s.",
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112 field, strjoin (options(match), ", "));
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113 endif
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114
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115 endfunction
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116
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117
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118 %!demo
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119 %! # Return the manually changed value RelTol of the ODE options
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120 %! # structure A. If RelTol wouldn't have been changed then an
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121 %! # empty matrix value would have been returned.
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jcorno <jacopo.corno@gmail.com>
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122 %!
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Rik <rik@octave.org>
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123 %! A = odeset ("RelTol", 1e-1, "AbsTol", 1e-2);
e368ce72a844 maint: Use Octave coding conventions for ode* functions.
Rik <rik@octave.org>
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124 %! odeget (A, "RelTol", [])
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125
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Rik <rik@octave.org>
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126 %!assert (odeget (odeset (), "RelTol"), [])
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Rik <rik@octave.org>
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127 %!assert (odeget (odeset ("RelTol", 10), "RelTol"), 10)
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Rik <rik@octave.org>
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128 %!assert (odeget (odeset (), "RelTol", 10), 10)
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Rik <rik@octave.org>
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129 %!assert (odeget (odeset (), "Stats"), [])
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Rik <rik@octave.org>
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130 %!assert (odeget (odeset (), "Stats", "on"), "on")
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Rik <rik@octave.org>
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131 %!assert (odeget (odeset (), "Mass"), [])
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Rik <rik@octave.org>
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132 %!assert (odeget (odeset (), "AbsTol", 1e-6, "fast"), [])
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Rik <rik@octave.org>
parents: 20553
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133 %!assert (odeget (odeset (), "AbsTol", 1e-6, "fast_not_empty"), 1e-6)
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Rik <rik@octave.org>
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134 %!assert (odeget (odeset (), "AbsTol", 1e-9), 1e-9)
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Rik <rik@octave.org>
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135
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Rik <rik@octave.org>
parents: 20553
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136 %!error odeget ()
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Rik <rik@octave.org>
parents: 20553
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137 %!error odeget (1)
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Rik <rik@octave.org>
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138 %!error odeget (1,2,3,4,5)
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Rik <rik@octave.org>
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139 %!error <ODE_OPT must be a valid ODE_STRUCT> odeget (1, "opt1")
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Rik <rik@octave.org>
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140 %!error <FIELD must be a string> odeget (struct ("opt1", 1), 1)
20631
00caf63edcdf maint: Remove obsolete ODE options from odeset/odeget/ode45.
Rik <rik@octave.org>
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141 %!warning <no field 'foo' exists> odeget (struct ("opt1", 1), "foo");
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Rik <rik@octave.org>
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142 %!warning <no exact match for 'Rel'. Assuming 'RelTol'> odeget (struct ("RelTol", 1), "Rel");
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Rik <rik@octave.org>
parents: 20553
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143 %!error <Possible fields found: InitialSlope, InitialStep> odeget (odeset (), "Initial")
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Rik <rik@octave.org>
parents: 20553
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144