function showarrowtip (arrow)% Display a tip for ARROW.% Depends on tipdata being set on the handle to ARROW.  % Copyright 2000, 2001, 2002, 2003, 2004, 2005 The MathWorks Inc  d=getappdata(gcf,'sliceomatic');    if isempty(arrow)    tipdata = [];  else        ctrlarrow = getappdata(arrow,'controlarrow');        if ~isempty(ctrlarrow)      % In this case, the slice or isosurface passed in      % most likely from the motion callback.  Lets redirect      % our input argument and show the tip anyway.            % See the "arrow" private function for the setting of this value;      arrow = ctrlarrow(2);    end        tipdata = getappdata(arrow,'tipdata');  end    if ~isempty(tipdata)      set(d.tip,'parent',tipdata.parentaxes, ...              'string',sprintf('Value: %1.3f',tipdata.value),...              'units','data', ...              'position', tipdata.position, ...              'verticalalignment', tipdata.verticalalign,...              'horizontalalignment', tipdata.horizontalalign);    set(d.tip,'units','pixels');    set(d.tip,'visible','on');      else        set(d.tip,'visible','off');      end