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Rotating the Graph
A graph can be rotated manually using the touch panel or calculator keys, or it can be rotated automatically.
u To rotate a graph manually using the stylus
Drag the stylus on the 3D Graph window in the direction you want to rotate the graph.
u To rotate a graph manually using the cursor keys and graph controller arrows
Press the cursor key that indicates the direction you want to rotate the graph. Or you can tap the graph
controller arrow that indicates the direction you want to rotate.
Note
• Holding down a cursor key will rotate the graph continuously.
• Display of the graph controller arrows is turned off under initial default settings. Use the "G-Controller" check
box on the Graph Format dialog box to turn it on, if you want. For more information, see "Graph Format Dialog
Box" on page 38.
u To rotate a graph automatically
1. To start automatic graph rotation, tap a and then [Rotating].
2. On the submenu that appears, select the rotation direction you want:
[Left → Right], [Right → Left], [Top → Bottom], or [Bottom → Top].
• Rotation continues for about 30 seconds and then stops automatically. You can also stop automatic
rotation by pressing the c key or tapping l on the icon panel.
3D Graph Example
1401
To graph the hyperbolic paraboloid
1402
To graph a parametric equation
Using Trace to Read Graph Coordinates
Starting the trace operation causes a crosshair pointer to appear on the graph.
You can then press a cursor key or tap the graph controller arrows to move the
pointer to the location you want, and read the coordinates that appear on the
display. To start the trace operation and display the pointer, make the 3D
Graph window active, and then tap =, or tap [Analysis] and then [Trace].
• Each time you press the cursor key or tap a graph controller arrow, the
pointer moves the distance specified by the [grid] value on the 3D View
Window dialog box.
• Inputting a value while a trace operation is being performed displays a dialog box for inputting an
y
s
-value, or an
- and
jump to the corresponding location when you tap [OK].
To cancel the trace operation, tap l on the icon panel.
Tip:
The initial default setting for the coordinate display is rectangular coordinates. With the [3D Format] tab of the Graph
Format dialog box, you can specify display of polar coordinates or you can hide coordinates, if you want. For more
information, see "Graph Format Dialog Box" on page 38.
z
x
= 3 · sin(
t
-value. Inputting values for each of the variables on this dialog box causes the pointer to
x
2
y
2
=
–
2
8
t
s
y
) · cos(
),
= 3 · cos(
t
s
z
s
) · cos(
),
= sin(
)
Chapter 14: 3D Graph Application 255
x
- and
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