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annotate scripts/plot/drawnow.m @ 6257:44c91c5dfe1d

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[project @ 2007-01-30 19:16:52 by jwe]
author jwe
date Tue, 30 Jan 2007 19:16:55 +0000
parents
children c6a7b0453f9a
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6257
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1 ## Copyright (C) 2005 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 2, or (at your option)
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8 ## 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, write to the Free
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17 ## Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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18 ## 02110-1301, USA.
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19
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20 ## -*- texinfo -*-
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21 ## @deftypefn {Function File} {} drawnow ()
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22 ## Display the current graphics.
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23 ## @end deftypefn
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24
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25 ## Author: jwe
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26
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27 function drawnow (term, file)
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28
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29 ## Use this instead of calling gcf to avoid creating a figure.
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30
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31 h = get (0, "currentfigure");
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32
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33 if (h)
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34
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35 f = get (h);
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36
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37 plot_stream = f.__plot_stream__;
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38
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39 if (isempty (plot_stream))
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40 plot_stream = popen (sprintf ("gnuplot -title \"Figure %d\"", h), "w");
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41 if (plot_stream < 0)
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42 error ("drawnow: failed to open connection to gnuplot");
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43 else
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44 set (h, "__plot_stream__", plot_stream);
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45 if (isempty (getenv ("DISPLAY")))
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46 fprintf (plot_stream, "set terminal dumb\n;");
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47 endif
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48 endif
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49 endif
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50
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51 if (nargin == 2)
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52 fprintf (plot_stream,
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53 "set terminal push; set terminal %s; set output '%s'\n",
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54 term, file);
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55 endif
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56
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57 if (nargin == 2 || strcmp (f.visible, "on"))
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58 __uiobject_draw_figure__ (f, plot_stream);
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59 endif
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60
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61 __request_drawnow__ (false);
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62
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63 if (nargin == 2)
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64 fputs (plot_stream, "set terminal pop; set output;\n");
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65 endif
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66
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67 else
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68
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69 __request_drawnow__ (false);
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70
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71 endif
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72
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73
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74 endfunction