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annotate scripts/plot/__plt_get_axis_arg__.m @ 7215:dd88d61d443f

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[project @ 2007-11-29 16:44:45 by jwe]
author jwe
date Thu, 29 Nov 2007 16:46:40 +0000
parents a1dbe9d80eee
children 5389a52df87b
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1 ## Copyright (C) 1996, 1997, 2006, 2007 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 ## Undocumented internal function.
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20
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21 ## Author: jwe
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22
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23 function [h, varargin, narg] = __plt_get_axis_arg__ (caller, varargin)
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24
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25 if (islogical (caller))
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26 nogca = caller;
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27 caller = varargin{1};
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28 varargin(1) = [];
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29 else
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30 nogca = false;
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31 endif
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32
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33 if (nargin > 1 && length (varargin) > 0 && ishandle (varargin{1}))
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34 tmp = varargin{1};
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35 obj = get (tmp);
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36 if (strcmp (obj.type, "axes") || strcmp (obj.type, "hggroup"))
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37 h = ancestor (tmp, "axes");
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38 varargin(1) = [];
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39 if (isempty (varargin))
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40 varargin = {};
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41 endif
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42 else
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43 error ("%s: expecting first argument to be axes handle", caller);
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44 endif
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45 else
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46 f = get (0, "currentfigure");
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47 if (! isempty (f))
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48 h = get (f, 'currentaxes');
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49 elseif (nogca)
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50 h = NaN;
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51 else
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52 h = gca ();
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53 endif
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54 if (nargin < 2)
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55 varargin = {};
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56 endif
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57 endif
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58
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59 narg = length (varargin);
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60
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61 endfunction