) </strong></div>

<h2><a name="_description"></a>DESCRIPTION <a href="#_top"><img alt="^" border="0" src="../../../../up.png"></a></h2>
<div class="fragment"><pre class="comment">FLYTRACKER
 Usage: 
  [x, y, orientation] = FlyTracker(filename, FrameRange, ...
                        NBackFrames, opt1, sqrsize,...
                        alpha, ellipse)

 This function takes an input filename for a movie and tracks the position
 of a fly from StartFrame to EndFrame.  The movie can be in any format
 (.avi, .