time   calls  line
                  1 function refresh(h)
                  2 %REFRESH Refresh figure.
                  3 %   REFRESH causes the current figure window to be redrawn. 
                  4 %   REFRESH(FIG) causes the figure FIG to be redrawn.
                  5 
                  6 %   D. Thomas   5/26/93
                  7 %   Copyright 1984-2009 The MathWorks, Inc.
                  8 %   $Revision: 5.11.4.6 $  $Date: 2009/02/18 02:18:36 $
                  9 
            10   10 if nargin==1, 
            10   11     if ~any(ishghandle(h, 'figure')) 
                 12         error('MATLAB:refresh:InvalidHandle', ...
                 13               'Handle does not refer to a figure object')
                 14     end
                 15 else
                 16     h = gcf;
                 17 end
                 18 
                 19 % The following toggle of the figure color property is
                 20 % only to set the 'dirty' flag to trigger a redraw.
            10   21 color = get(h,'color'); 
            10   22 if ~ischar(color) && all(color == [0 0 0]) 
                 23     tmpcolor = [1 1 1];
            10   24 else 
            10   25     tmpcolor = [0 0 0]; 
            10   26 end 
            10   27 set(h,'color',tmpcolor,'color',color);