HP 50g Graphing manual Draw, DRAW3DMATRIX, Drax, Access …µDRAW, Access …µDRAX Input/Output None

DRAW

Type: Command Operation

Description: Draw Plot Command: Plots the mathematical data in the reserved variable EQ or the statistical data in the reserved variable ΣDAT, using the specified x and yaxis display ranges.

The plot type determines if the data in the reserved variable EQ or the data in the reserved variable ΣDAT is plotted.

DRAW does not erase PICT before plotting; execute ERASE to do so. DRAW does not draw axes; execute DRAX to do so.

When DRAW is executed from a program, the graphics display, which shows the resultant plot, does not persist unless PICTURE, PVIEW (with an empty list argument), or FREEZE is subsequently executed.

Access: …µDRAW

Flags: Simultaneous or Sequential Plot (–28), Curve Filling (–31)

Input/Output: None

See also: AUTO, AXES, DRAX, ERASE, FREEZE, PICTURE, LABEL, PVIEW

DRAW3DMATRIX

Type: Command

Description: Draws a 3D plot from the values in a specified matrix.

The number of rows indicates the number of units along the x axis, the number of columns indicates the number of units along the y axis, and the values in the matrix give the magnitudes of the plotted points along the z axis. In other words, the coordinates of a plotted point are (r, c, v) where r is the row number, c the column number and v the value in the corresponding cell of the matrix.

You can limit the points that are plotted by specifying a minimum value (vmin) and a maximum value (vmax). Values in the matrix outside this range are not plotted. If all values are included, the total number of points plotted is r × c.

Once the plot has been drawn, you can rotate it in various ways by pressing the following keys:

™and šrotate the plot around the x axis (in different directions)

—and ˜rotate the plot around the y axis (in different directions) Iand L rotate the plot around the z axis (in different directions)

Access: …µDRAW3DMATRIX

Input/Output:

		Level 3/Argument 1	Level 2/Argument 2	Level 1/Argument 3	Level 1/Item 1
		[[ matrix ]]	vmin	vmax	→
See also:	FAST3D
DRAX	Command
Type:
Description:	Draw Axes Command: Draws axes in PICT.

The coordinates of the axes intersection are specified by AXES. Axes tickmarks are specified in PPAR with the ATICK, or AXES command. DRAX does not draw axes labels; execute LABEL to do so.

Access: …µDRAX

Input/Output: None

See also: AXES, DRAW, LABEL

368 Full Command and Function Reference