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annotate scripts/plot/refreshdata.m @ 9245:16f53d29049f

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update copyright notices
author John W. Eaton <jwe@octave.org>
date Fri, 22 May 2009 10:46:00 -0400
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1 ## Copyright (C) 2008, 2009 David Bateman
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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} {} refreshdata ()
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21 ## @deftypefnx {Function File} {} refreshdata (@var{h})
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22 ## @deftypefnx {Function File} {} refreshdata (@var{h}, @var{ws})
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23 ## Evaluates any datasource properties of the current figure and updates
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24 ## the corresponding data. If call with one or more arguments @var{h} is
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25 ## a scalar or array of figure handles which to refresh. The data
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26 ## sources are by default evaluated in the "base" workspace but can also
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27 ## be set in the "caller" workspace.
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28 ##
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29 ## An example of the use of refreshdata is
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30 ##
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31 ## @example
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32 ## @group
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33 ## x = 0:0.1:10;
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34 ## y = sin (x);
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35 ## plot (x, y, "ydatasource", "y");
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36 ## for i = 1 : 100
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37 ## pause(0.1)
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38 ## y = sin (x + 0.1 * i);
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39 ## refreshdata();
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40 ## endfor
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41 ## @end group
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42 ## @end example
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43 ##
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44 ## @seealso{linkdata}
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45 ## @end deftypefn
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46
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47 function refreshdata (h, ws)
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48
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49 if (nargin == 0)
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50 h = gcf ();
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51 ws = "base";
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52 else
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53 if (iscell (h))
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54 h = [h{:}];
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55 endif
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56 if (!all (ishandle (h)) || !all (strcmp (get (h, "type"), "figure")))
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57 error ("refreshdata: expecting a list of figure handles");
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58 endif
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59 if (nargin < 2)
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60 ws = "base";
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61 else
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62 if (!ischar (ws) || !(strcmpi (ws, "base") || strcmpi (ws, "caller")))
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63 error ("refreshdata: expecting workspace to be \"base\" or ""caller\"");
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64 else
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65 ws = tolower (ws);
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66 endif
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67 endif
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68 endif
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69
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70 h = findall (h);
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71 objs = [];
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72 props = {};
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73
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74 for i = 1 : numel (h)
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75 obj = get (h (i));
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76 fldnames = fieldnames (obj);
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77 m = regexpi (fieldnames(obj), "^.+datasource$", "match");
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78 idx = cellfun (@(x) !isempty(x), m);
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79 if (any (idx))
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80 props = [props; {cell2mat(m(idx))}];
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81 objs = [objs ; h(i)];
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82 endif
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83 endfor
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84
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85 for i = 1 : length (objs)
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86 for j = 1 : length (props {i})
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87 expr = get (objs(i), props{i}{j});
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88 if (!isempty (expr))
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89 val = evalin (ws, expr);
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90 prop = props{i}{j}(1:end-6);
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91 if (! isequal (get (objs(i), prop), val))
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92 set (objs(i), props{i}{j}(1:end-6), val);
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93 endif
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94 endif
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95 endfor
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96 endfor
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97 endfunction
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98
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99 %!demo
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100 %! x = 0:0.1:10;
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101 %! y = sin (x);
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102 %! plot (x, y, "ydatasource", "y");
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103 %! for i = 1 : 100
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104 %! pause(0.1)
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105 %! y = sin (x + 0.1 * i);
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106 %! refreshdata(gcf(), "caller");
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107 %! endfor