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annotate scripts/plot/grid.m @ 17049:0322e057697f

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hold.m, grid.m, box.m: Update to use new __plt_get_axis_arg__. * scripts/plot/box.m: Update to use new __plt_get_axis_arg__. Use hax instead of ax. Redo docstring. * scripts/plot/grid.m: Update to use new __plt_get_axis_arg__. Use hax instead of ax. Redo docstring. Move input validation to front of function. * scripts/plot/hold.m: Update to use new __plt_get_axis_arg__. Use hax instead of ax. Redo docstring. Add 2 new %!demos.
author Pantxo Diribarne <pantxo.diribarne@gmail.com>
date Tue, 23 Jul 2013 15:10:57 +0200
parents 4506eade9f04
children d3ebc3f9bdbf
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72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
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1 ## Copyright (C) 1993-2012 John W. Eaton
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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} {} grid
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21 ## @deftypefnx {Function File} {} grid on
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22 ## @deftypefnx {Function File} {} grid off
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23 ## @deftypefnx {Function File} {} grid minor
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24 ## @deftypefnx {Function File} {} grid minor on
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25 ## @deftypefnx {Function File} {} grid minor off
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26 ## @deftypefnx {Function File} {} grid (@var{hax}, @dots{})
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27 ## Control the display of grid lines on a plot.
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28 ##
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29 ## The function input may be either @code{"on"}, or @code{"off"}.
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Ben Abbott <bpabbott@mac.com>
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30 ## If it is omitted, the current grid state is toggled.
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31 ##
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32 ## If the first argument is @code{"minor"} then all further commands
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33 ## modify the minor grid rather than the major grid.
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34 ##
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35 ## If the first argument is an axis handle, @var{hax}, operate on the
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Ben Abbott <bpabbott@mac.com>
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36 ## specified axis object.
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37 ##
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38 ## To control the grid lines for an individual axis use the @code{set}
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39 ## function. For example,
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40 ##
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41 ## @example
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42 ## set (gca, "ygrid", "on");
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43 ## @end example
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44 ## @seealso{box}
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45 ## @end deftypefn
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46
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47 ## Author: jwe
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48
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49 function grid (varargin)
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50
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51 [hax, varargin, nargs] = __plt_get_axis_arg__ ("grid", varargin{:});
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52
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53 if (isempty (hax))
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54 hax = gca ();
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55 endif
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56
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57 if (nargs > 2)
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58 print_usage ();
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59 endif
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60
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61 grid_on = ( strcmp (get (hax, "xgrid"), "on")
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62 && strcmp (get (hax, "ygrid"), "on")
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63 && strcmp (get (hax, "zgrid"), "on"));
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64
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65 minor_on = ( strcmp (get (hax, "xminorgrid"), "on")
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66 && strcmp (get (hax, "yminorgrid"), "on")
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67 && strcmp (get (hax, "zminorgrid"), "on"));
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68
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69 if (nargs == 0)
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70 grid_on = ! grid_on;
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71 else
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72 x = varargin{1};
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73 if (! ischar (x))
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74 error ("grid: argument must be a string");
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75 endif
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76 if (strcmpi (x, "off"))
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77 grid_on = false;
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78 elseif (strcmpi (x, "on"))
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79 grid_on = true;
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80 elseif (strcmpi (x, "minor"))
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81 if (nargs == 2)
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82 x2 = varargin{2};
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83 if (strcmpi (x2, "on"))
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84 minor_on = true;
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85 grid_on = true;
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86 elseif (strcmpi (x2, "off"))
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87 minor_on = false;
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88 else
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89 print_usage ();
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90 endif
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91 else
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92 minor_on = ! minor_on;
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93 if (minor_on)
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94 grid_on = true;
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95 endif
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96 endif
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97 else
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98 print_usage ();
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99 endif
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100 endif
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101
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102 if (grid_on)
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103 set (hax, "xgrid", "on", "ygrid", "on", "zgrid", "on");
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104 if (minor_on)
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105 set (hax, "xminorgrid", "on", "yminorgrid", "on", "zminorgrid", "on");
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106 else
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107 set (hax, "xminorgrid", "off", "yminorgrid", "off", "zminorgrid", "off");
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108 endif
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109 else
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110 set (hax, "xgrid", "off", "ygrid", "off", "zgrid", "off",
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111 "xminorgrid", "off", "yminorgrid", "off", "zminorgrid", "off");
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112 endif
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113
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114 endfunction
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117 %!demo
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118 %! clf;
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119 %! subplot (2,2,1);
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120 %! plot (1:100);
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121 %! grid off;
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122 %! title ('no grid');
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123 %! subplot (2,2,2);
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124 %! plot (1:100);
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125 %! grid on;
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126 %! title ('grid on');
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127 %! subplot (2,2,3);
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128 %! plot (1:100);
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129 %! grid minor;
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130 %! title ('grid minor');
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131 %! subplot (2,2,4);
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132 %! semilogy (1:100);
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133 %! grid minor;
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134 %! title ('grid minor');
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135