PTYPE

     PTYPE is the type of y axis plot to be used, the height-to-width 
     ratio of the plot, and the margins, separated by slashes.

     The valid inputs for type for the y axis are:

	LIN	linear 
	LOG	logarithmic 
	STUVE	scaled by raising to KAPPA, 2/7, power
	KAP	same as STUVE
	SKEWT	logarithmic y-axis; skewed x-axis
	SKEW	same as SKEWT
 
     If the height-to-width ratio is 0, the entire screen will be used.  
     This is also the default when ratio is not specified.
 
     The margins are specified as:  left;bottom;right;top.  The values 
     are multiples of the current character size.  If the margin 
     specification is missing or incomplete, a default appropriate to 
     the program will be used.  The default in the profile programs is:  
     10;3;(6 times wind barb size);5.  The right margin allows room for 
     plotting winds and typically has a value around 20.