annotate scripts/plot/newplot.m @ 10510:62ebba45054e

Respect the nextplot property value of 'new' for axes and 'replacechildren' for axes and figures.
author Ben Abbott <bpabbott@mac.com>
date Mon, 12 Apr 2010 18:03:25 -0400
parents 4516a0c97ced
children 95c3e38098bf
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John W. Eaton <jwe@octave.org>
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1 ## Copyright (C) 2005, 2006, 2007, 2008 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 __next_line_color__ (true);
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30 __next_line_style__ (true);
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31 cf = gcf ();
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32 fnp = get (cf, "nextplot");
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33 switch (fnp)
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34 ## FIXME -- probably we should do more than validate the nextplot
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35 ## property value...
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36 case "new"
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37 case "add"
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38 case "replacechildren"
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39 delete (get (cf, "children"))
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40 case "replace"
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41 otherwise
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42 error ("newplot: unrecognized nextplot property for current figure");
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43 endswitch
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44 ca = gca ();
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45 anp = get (ca, "nextplot");
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46 switch (anp)
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47 case "new"
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48 case "add"
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49 case "replacechildren"
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50 delete (get (ca, "children"))
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51 case "replace"
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52 __go_axes_init__ (ca, "replace");
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53 __request_drawnow__ ();
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54 otherwise
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55 error ("newplot: unrecognized nextplot property for current axes");
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56 endswitch
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57 else
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58 print_usage ();
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59 endif
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60
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61 endfunction