title: Add multiple hist fit to a figure, without the hist
body: <p>I'm a matlab newbie, and i'd like to superpose some hist fit on a same figure.
  I know the function histfit, but unfortunatly i can't get to remove the hist and only keep the curve.
  I guess once i'll know how to do that i'll be able to add several curves using "hold on".</p>
  
  <p>Thanx for any answers or advices!</p>