WINLEV  WINLEV Image Window-Level Function


Usage
 
 Adjusts the data range used to map the current image to the current
 colormap.  The general syntax for its use is
 
   winlev(window,level)
 
 where window is the new window, and level is the new level, or
 
   winlev
 
 in which case it returns a vector containing the current window
 and level for the active image.
 