HP 50g Graphing To use for input into the table, Parameter Description Default Value Command

TPAR

TPAR is a variable in the current directory. It contains a list of parameters used by the table of values plotting operation.

Parameter	Description	Default Value
(Command)
startingvalue	Real number that specifies the first value to show in the	0
	table.
step	Real number that specifies the amount to increment	.1
	from startingvalue for each row in the table.
tableformat	0 for “Automatic”, for generating the table based on	0
	automaticallycreated values, or 1 for “Build Your
	Own”, for generating the table based on values stored in
	a vector stored in filename and saving any userentered
	values.
zoomfactor	Real number that specifies the zoom factor for the table.	4
fontsize	0 for the small font or 1 for the large font.	0
filename	The name of a variable containing a vector with values	TAB
	to use for input into the table.

VPAR

VPAR is a variable in the current directory. It contains a list of parameters used by the 3D plot types. The main data structure stored in VPAR describes the “view volume,” the abstract threedimensional region in which t he function is plotted.

Parameter	Description	Default Value
(Command)
(xleft, xright) (XVOL)	Real numbers that specify the width of the view volume.	(–1, 1)
(yfar, ynear) (YVOL)	Real numbers that specify the depth of the view volume.	(–1, 1)
(zlow, zhigh) (ZVOL)	Real numbers that specify the height of the view volume.	(–1, 1)
(xeye, yeye, zeye) (EYEPT)	Real numbers that specify the point in space from which	(0, –3, 0)
	the plot is viewed.
(xstep, ystep)	Real numbers that specify the increments between of x	(10, 8)
(NUMX, NUMY)	coordinates and ycoordinates plotted. The incremen ts
	are equal to the range for the axes divided by the number
	of steps. Used instead of (or in combination with) res.
(xxleft, xxright) (XXRNG)	Real numbers that specify the width of the input plane	(–1, 1)
	(domain). Used by GRIDMAP and PARSURFACE.
(yyfar, yynear) (YYRNG)	Real numbers that specify the depth of the input plane	(–1, 1)
	(domain). Used by GRIDMAP and PARSURFACE.

Parameters without commands can be modified programmatically by storing new values in the list contained in VPAR (use the PUT command).

D10 Reserved Variables