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update Octave Project Developers copyright for the new year In files that have the "Octave Project Developers" copyright notice, update for 2021.
author John W. Eaton <jwe@octave.org>
date Wed, 10 Feb 2021 09:52:15 -0500
parents 05c1217d0dae
children 7854d5752dd2
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1 ########################################################################
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2 ##
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3 ## Copyright (C) 2005-2021 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 {} {} line ()
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28 ## @deftypefnx {} {} line (@var{x}, @var{y})
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29 ## @deftypefnx {} {} line (@var{x}, @var{y}, @var{z})
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30 ## @deftypefnx {} {} line ("xdata", @var{x}, "ydata", @var{y})
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31 ## @deftypefnx {} {} line ("xdata", @var{x}, "ydata", @var{y}, "zdata", @var{z})
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32 ## @deftypefnx {} {} line (@dots{}, @var{property}, @var{value})
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33 ## @deftypefnx {} {} line (@var{hax}, @dots{})
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34 ## @deftypefnx {} {@var{h} =} line (@dots{})
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35 ## Create a line object from @var{x} and @var{y} (and possibly @var{z}) and
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36 ## insert it in the current axes.
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37 ##
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38 ## In the standard calling form the data @var{x}, @var{y}, and @var{z} may be
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39 ## scalars, vectors, or matrices. In the case of matrix inputs, @code{line}
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40 ## will attempt to orient scalars and vectors so the results can be plotted.
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41 ## This requires that one of the dimensions of the vector match either the
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42 ## number of rows or the number of columns of the matrix.
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43 ##
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44 ## In the low-level calling form (50% higher performance) where the data is
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45 ## specified by name (@code{line ("xdata", @var{x}, @dots{})}) the data must be
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46 ## vectors. If no data is specified (@code{line ()}) then
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47 ## @w{@code{@var{x} == @var{y} = [0, 1]}}.
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48 ##
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49 ## Multiple property-value pairs may be specified for the line object, but they
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50 ## must appear in pairs.
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51 ##
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52 ## If called with only @var{property}/@var{value} pairs then any unspecified
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53 ## properties use their default values as specified on the root object.
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54 ##
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55 ## If the first argument @var{hax} is an axes handle, then plot into this axes,
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56 ## rather than the current axes returned by @code{gca}.
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57 ##
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58 ## The optional return value @var{h} is a graphics handle (or vector of
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59 ## handles) to the line objects created.
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60 ##
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61 ## Programming Note: The full list of properties is documented at
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62 ## @ref{Line Properties}.
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63 ##
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64 ## The function @code{line} differs from @code{plot} in that line objects are
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65 ## inserted in to the current axes without first clearing the plot.
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66 ## @seealso{image, patch, rectangle, surface, text}
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67 ## @end deftypefn
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68
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69 function h = line (varargin)
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70
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71 ## Get axis argument which may be in a 'parent' PROP/VAL pair
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72 [hax, varargin] = __plt_get_axis_arg__ ("line", varargin{:});
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73
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74 if (isempty (hax))
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75 hax = gca ();
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76 oldfig = [];
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77 else
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78 hax = hax(1);
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79 oldfig = get (0, "currentfigure");
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80 set (0, "currentfigure", ancestor (hax, "figure"));
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81 endif
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82
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83 unwind_protect
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84 htmp = __line__ (hax, varargin{:});
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85 unwind_protect_cleanup
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86 if (! isempty (oldfig))
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87 set (0, "currentfigure", oldfig);
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88 endif
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89 end_unwind_protect
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90
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91 if (nargout > 0)
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92 h = htmp;
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93 endif
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94
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95 endfunction
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96
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97
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98 %!demo
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99 %! clf;
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100 %! line ([0 1], [0.8 0.8], "linestyle", "-", "color", "b");
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101 %! line ([0 1], [0.6 0.6], "linestyle", "--", "color", "g");
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102 %! line ([0 1], [0.4 0.4], "linestyle", ":", "color", "r");
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103 %! line ([0 1], [0.2 0.2], "linestyle", "-.", "color", "k");
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104 %! ylim ([0 1]);
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105 %! title ("line() with various linestyles");
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106 %! legend ('"-"', '"--"', '":"', '"-."', 'location', 'eastoutside');
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107
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108 %!demo
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109 %! clf;
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110 %! x = 0:0.3:10;
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111 %! y1 = cos (x);
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112 %! y2 = sin (x);
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113 %! subplot (3,1,1);
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114 %! args = {"color", "b", "marker", "s"};
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115 %! line ([x(:), x(:)], [y1(:), y2(:)], args{:});
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116 %! title ("Test broadcasting for line()");
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117 %! subplot (3,1,2);
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118 %! line (x(:), [y1(:), y2(:)], args{:});
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119 %! subplot (3,1,3);
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120 %! line ([x(:), x(:)+pi/2], y1(:), args{:});
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121 %! xlim ([0 10]);
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122
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123 %!test
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124 %! hf = figure ("visible", "off");
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125 %! unwind_protect
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126 %! h = line;
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127 %! assert (findobj (hf, "type", "line"), h);
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128 %! assert (get (h, "xdata"), [0 1], eps);
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129 %! assert (get (h, "ydata"), [0 1], eps);
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130 %! assert (get (h, "type"), "line");
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131 %! assert (get (h, "color"), get (0, "defaultlinecolor"));
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parents: 13111
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132 %! assert (get (h, "linestyle"), get (0, "defaultlinelinestyle"));
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parents: 13111
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133 %! assert (get (h, "linewidth"), get (0, "defaultlinelinewidth"), eps);
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134 %! unwind_protect_cleanup
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135 %! close (hf);
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136 %! end_unwind_protect