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maint: update copyright notices for 2012
author John W. Eaton <jwe@octave.org>
date Mon, 02 Jan 2012 14:25:41 -0500
parents be7bfd59300a
children f3d52523cde1
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14138
72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
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1 ## Copyright (C) 2005-2012 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} {} newplot ()
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21 ## Prepare graphics engine to produce a new plot. This function is
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22 ## called at the beginning of all high-level plotting functions.
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23 ## It is not normally required in user programs.
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24 ## @end deftypefn
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25
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26 function newplot ()
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27
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28 if (nargin == 0)
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29 cf = gcf ();
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30 fnp = get (cf, "nextplot");
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31 switch (fnp)
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32 ## FIXME -- probably we should do more than validate the nextplot
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33 ## property value...
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34 case "new"
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35 case "add"
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36 case "replacechildren"
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37 delete (get (cf, "children"));
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38 case "replace"
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39 otherwise
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40 error ("newplot: unrecognized nextplot property for current figure");
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41 endswitch
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42 ca = gca ();
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43 anp = get (ca, "nextplot");
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44 if (strcmp (get (ca, "__hold_all__"), "off"))
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45 __next_line_color__ (true);
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46 __next_line_style__ (true);
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47 else
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48 __next_line_color__ (false);
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49 __next_line_style__ (false);
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50 endif
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51 switch (anp)
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52 case "new"
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53 case "add"
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54 case "replacechildren"
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55 delete (get (ca, "children"));
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56 case "replace"
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57 __go_axes_init__ (ca, "replace");
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58 __request_drawnow__ ();
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59 otherwise
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60 error ("newplot: unrecognized nextplot property for current axes");
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61 endswitch
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62 else
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63 print_usage ();
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64 endif
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65
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66 endfunction
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67
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68 %!test
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69 %! hf = figure ("visible", "off");
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70 %! unwind_protect
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71 %! p = plot ([0, 1]);
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72 %! newplot;
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73 %! assert (isempty (get (gca, "children")));
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74 %! unwind_protect_cleanup
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75 %! close (hf);
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76 %! end_unwind_protect