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)

 

 

 

 

 

starting-value

Real number that specifies the first value to show in the

0

 

table.

 

step

Real number that specifies the amount to increment

.1

 

from starting-valuefor each row in the table.

 

table-format

0 for “Automatic”, for generating the table based on

0

 

automatically-created values, or 1 for “Build Your

 

 

Own”, for generating the table based on values stored in

 

 

a vector stored in filename and saving any user-entered

 

 

values.

 

zoom-factor

Real number that specifies the zoom factor for the table.

4

font-size

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 three-dimensional region in which the 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 y-coordinates plotted. The increments

 

 

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).

D-10 Reserved Variables