# Structure definitions for fitting surface graphically

define	LEN_GEOGRAPH	10

define	GG_NEWFUNCTION		Memi[$1]	# New function
define	GG_PLOTTYPE		Memi[$1+1]	# Type of plot
define	GG_OVERPLOT		Memi[$1+2]	# Overplot previous graph?
define	GG_FITERROR		Memi[$1+3]	# Error fitting x function
define	GG_CONSTXY		Memi[$1+4]	# Plot lines of constant x-y

# define plot types

define	FIT		1		# plot x y fit
define	XXRESID		2		# x fit residuals versus x
define	XYRESID		3		# x fit residuals versus y
define	YXRESID		4		# y fit residuals versus x
define	YYRESID		5		# y fit residuals versus y

# define the permitted colon commands

define  GM_CMDS         "|show|projection|refpoint|fitgeometry|function|\
order|xxorder|xyorder|yxorder|yyorder|xxterms|yxterms|reject|maxiter|"

define  GMCMD_SHOW      	1
define	GMCMD_PROJECTION	2
define	GMCMD_REFPOINT		3
define  GMCMD_GEOMETRY  	4
define  GMCMD_FUNCTION  	5
define  GMCMD_ORDER  		6
define  GMCMD_XXORDER   	7
define  GMCMD_XYORDER   	8
define  GMCMD_YXORDER   	9
define  GMCMD_YYORDER   	10
define  GMCMD_XXTERMS   	11
define  GMCMD_YXTERMS   	12
define  GMCMD_REJECT    	13
define  GMCMD_MAXITER    	14