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annotate scripts/plot/appearance/rticks.m @ 29359:7854d5752dd2

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maint: merge stable to default.
author John W. Eaton <jwe@octave.org>
date Wed, 10 Feb 2021 10:10:40 -0500
parents 3cac3ceb9629 0a5b15007766
children 796f54d4ddbf
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1 ########################################################################
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2 ##
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3 ## Copyright (C) 2017-2021 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 {} {@var{tickval} =} rticks
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28 ## @deftypefnx {} {} rticks (@var{tickval})
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29 ## @deftypefnx {} {@dots{} =} rticks (@var{hax}, @dots{})
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30 ## Query or set the tick values on the r-axis of the current axis.
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31 ##
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32 ## When called without argument, return the current tick locations as specified
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33 ## in the @qcode{"rtick"} axes property. These locations can be changed by
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34 ## calling @code{rticks} with a vector of tick values. Note: ascending order
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35 ## is not required.
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36 ##
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37 ## If the first argument @var{hax} is an axes handle, then operate on
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38 ## this axis rather than the current axes returned by @code{gca}.
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39 ##
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40 ## Requesting a return value when calling @code{rticks} to set a property value
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41 ## will result in an error.
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42 ##
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43 ## NOTE: Octave does not currently implement polaraxes objects. It is
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44 ## therefore not possible to query or set a @qcode{"mode"} for the
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45 ## @qcode{"rtick"} property as can be done with the equivalent functions for
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46 ## @var{x}, @var{y}, and @var{z} axes.
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47 ##
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48 ## @seealso{thetaticks, xticks, yticks, zticks, polar, get, set}
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49 ## @end deftypefn
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50
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51 function retval = rticks (varargin)
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52
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53 hax = [];
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54 switch (nargin)
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55 case 0
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56 retval = get (gca (), "rtick"); # will error if no rtick exists.
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57 return;
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58
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59 case 1
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60 if (isaxes (varargin{1}))
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61 retval = get (varargin{1}, "rtick");
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62 return;
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63 else
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64 arg = varargin{1};
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65 endif
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66
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67 case 2
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68 if (! isaxes (varargin{1}))
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69 error ("rticks: HAX must be a handle to an axes object");
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70 endif
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71 hax = varargin{1};
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72 arg = varargin{2};
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73
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74 otherwise
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75 print_usage ();
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76
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77 endswitch
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78
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79 if (isempty (hax))
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80 hax = gca ();
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81 endif
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82
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83 if (isnumeric (arg))
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84 if (nargout > 0)
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85 error ("rticks: too many output arguments requested");
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86 endif
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87 ## NOTE: Matlab errors if tick points are not in ascending order. Octave
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88 ## permits out of order tick points, so no error is produced.
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89 set (hax, "rtick", arg);
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90
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91 elseif (ischar (arg))
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92 error ("rticks: MODE is not yet implemented for the rtick property");
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93
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94 ## FIXME: Enable mode args if/when they are available in polar/polarplot
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95 ## arg = tolower (arg);
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96 ## switch (arg)
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97 ## case "mode"
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98 ## retval = get (hax, "rtickmode");
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99 ##
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100 ## case {"auto", "manual"}
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101 ## if (nargout > 0)
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102 ## error (["rticks: " ...
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103 ## "too many output arguments requested for arg: ", arg]);
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104 ## endif
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105 ## set (hax, "rtickmode", arg);
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106 ##
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107 ## otherwise
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108 ## error ("rticks: invalid option: %s", arg);
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109 ##
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110 ## endswitch
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111
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112 else
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113 print_usage ();
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114 endif
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115
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116 endfunction
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117
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118
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119 %!test
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120 %! hf = figure ("visible", "off");
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121 %! unwind_protect
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122 %! polar (linspace (0, pi, 20), rand (20,1));
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123 %! hax = gca ();
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124 %! ticks = rticks;
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125 %! assert (rticks (hax), ticks);
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126 %! rticks (hax, [0 0.25 0.75 1 2]);
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127 %! assert (rticks (hax), [0 0.25 0.75 1 2]);
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128 %! unwind_protect_cleanup
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129 %! close (hf);
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130 %! end_unwind_protect
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131
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132 ## Test input validation
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133 %!error rticks (1,2,3)
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134 %!test
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135 %! hf = figure ("visible", "off");
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136 %! unwind_protect
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137 %! polar (linspace (0, pi, 20), 1:20);
28892
3cac3ceb9629 maint: Use coding style with parentheses after function name to distinguish from a variable.
Rik <rik@octave.org>
parents: 27985
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138 %! hax = gca ();
24050
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139 %! fail ("rticks (-1, [0 1])", "HAX must be a handle to an axes");
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140 %! fail ("tmp = rticks (hax, [0 1])", "too many output arguments");
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141 %! fail ("tmp = rticks (hax, 'mode')", "MODE is not yet implemented");
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142 %! unwind_protect_cleanup
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143 %! close (hf);
a03bb64031da Implement missing axis tick and label functions (bug #51839).
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144 %! end_unwind_protect