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annotate scripts/plot/util/clf.m @ 20602:af5591ef9790 stable

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__gnuplot_drawnow__.m: Use "screenpixelsperinch" instead of constant value (bug #46122).
author ederag <edera@gmx.fr>
date Tue, 06 Oct 2015 11:07:10 +0200
parents 9fc020886ae9
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 ## Copyright (C) 2005-2015 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 {Command} {} clf
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21 ## @deftypefnx {Command} {} clf reset
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22 ## @deftypefnx {Function File} {} clf (@var{hfig})
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23 ## @deftypefnx {Function File} {} clf (@var{hfig}, "reset")
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24 ## @deftypefnx {Function File} {@var{h} =} clf (@dots{})
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25 ## Clear the current figure window.
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26 ##
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27 ## @code{clf} operates by deleting child graphics objects with visible
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28 ## handles (HandleVisibility = @qcode{"on"}).
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29 ##
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30 ## If the optional argument @qcode{"reset"} is specified, delete all child
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31 ## objects including those with hidden handles and reset all figure
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32 ## properties to their defaults. However, the following properties are not
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33 ## reset: Position, Units, PaperPosition, PaperUnits.
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34 ##
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35 ## If the first argument @var{hfig} is a figure handle, then operate on
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36 ## this figure rather than the current figure returned by @code{gcf}.
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37 ##
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38 ## The optional return value @var{h} is the graphics handle of the figure
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39 ## window that was cleared.
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40 ## @seealso{cla, close, delete, reset}
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41 ## @end deftypefn
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42
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43 ## Author: jwe
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44
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45 function h = clf (varargin)
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46
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47 if (nargin > 2)
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48 print_usage ();
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49 elseif (nargin == 0)
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50 hfig = gcf;
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51 do_reset = false;
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52 elseif (nargin == 1)
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53 if (isscalar (varargin{1}) && isfigure (varargin{1}))
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54 hfig = varargin{1};
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55 do_reset = false;
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56 elseif (ischar (varargin{1}) && strcmpi (varargin{1}, "reset"))
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57 hfig = gcf;
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58 do_reset = true;
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59 else
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60 print_usage ();
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61 endif
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62 else
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63 if (isscalar (varargin{1}) && isfigure (varargin{1})
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64 && ischar (varargin{2}) && strcmpi (varargin{2}, "reset"))
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65 hfig = varargin{1};
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66 do_reset = true;
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67 else
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68 print_usage ();
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69 endif
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70 endif
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71
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72 if (do_reset)
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73 ## Select all the children, including the one with hidden handles.
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74 delete (allchild (hfig));
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75 reset (hfig);
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76 else
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77 ## Select only the chilren with visible handles.
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78 delete (get (hfig, "children"));
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79
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80 ## Also delete the annotation axes
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81 hover = findall (hfig, "-depth", 1, "tag", "scribeoverlay");
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82 delete (hover);
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83 endif
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84
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85 if (nargout > 0)
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86 h = hfig;
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87 endif
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88
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89 endfunction
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90
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91
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92 %!test
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93 %! hf = figure ("visible", "off");
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94 %! unwind_protect
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95 %! l = line;
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96 %! assert (! isempty (get (gcf, "children")));
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97 %! clf;
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98 %! assert (isempty (get (gcf, "children")));
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99 %! unwind_protect_cleanup
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100 %! close (hf);
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101 %! end_unwind_protect
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102
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103 %!test
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104 %! hf = figure ("visible", "off");
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105 %! unwind_protect
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106 %! clf;
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107 %! assert (isempty (get (gcf, "children")));
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108 %! unwind_protect_cleanup
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109 %! close (hf);
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110 %! end_unwind_protect
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111
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112 %!xtest
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113 %! set (0, "defaultfigurevisible", "off")
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114 %! hf = figure ("visible", "off");
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115 %! unwind_protect
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116 %! plot (1:10);
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117 %! set (hf, "papertype", "tabloid");
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118 %! clf (hf);
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119 %! assert (isempty (get (gcf, "children")));
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120 %! assert (get (hf, "papertype"), "tabloid");
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121 %! plot (1:10);
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122 %! clf (hf, "reset");
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123 %! kids = get (hf, "children");
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124 %! assert (isempty (get (gcf, "children")));
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125 %! assert (get (hf, "papertype"), "usletter");
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126 %! unwind_protect_cleanup
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127 %! set (0, "defaultfigurevisible", "remove")
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128 %! close (hf);
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129 %! end_unwind_protect
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130