5-3-1

Drawing a 3D Graph

5-3 Drawing a 3D Graph

This section explains how to draw a 3D graph, as well as how to change the angle of a graph and how to rotate a graph.

Configuring 3D Graph View Window Parameters

Use the 3D Graph View Window to specify maximum and minimum values for the x-axis, y-axis, z-axis, s-variable, and t-variable. You can also specify the number of lines you would like for drawing the grid.

For the xgrid enter the number of lines you would like drawn within the interval from xmin to xmax. For example, if xmin = 3, xmax = 3 and xgrid= 15, 15 almost vertical lines will be used to display your graph. The ygrid lines will be almost horizontal.

After drawing a 3D graph, pressing the =key cycles the 3D Graph [Axes] setting (page 1-9-8) in the following sequence: “Off” “On” “Box” “Off”, and so on.

Before drawing a graph, be sure to first configure View Window parameters as required to ensure proper display of the graph.

uClassPad Operation

(1)On the application menu, tap D.

This starts up the 3D Graph application and displays the initial screen of the active 3D Graph Editor window.

(2)Tap 7to display the View Window dialog box.

(3)Tap the “3D” option button so the option is selected.

(4)Configure the View Window parameters as described below.

• Press c to move the cursor and input an appropriate value for each parameter.

Use this

To configure this View Window parameter:

Initial
item:

 

default

xmin

Minimum x-axis value

–3

 

 

 

xmax

Maximum x-axis value

3

 

 

 

xgrid

Number of grid lines used for x-axis direction

25

ymin

Minimum y-axis value

–3

 

 

 

ymax

Maximum y-axis value

3

ygrid

Number of grid lines used for y-axis direction

25

 

 

 

zmin

Minimum z-axis value

–3

zmax

Maximum z-axis value

3

 

 

 

angle θ

Clockwise angle of x-axis

20

 

 

 

angle φ

Eye position relative to the plane created by

70

the x-axis and y-axis, and the angle of the z-axis

 

 

 

 

 

smin

Minimum s-variable value

–3.1415926535

 

 

 

smax

Maximum s-variable value

3.14159265358

 

 

 

tmin

Minimum t-variable value

–3.1415926535

 

 

 

tmax

Maximum t-variable value

3.14159265358

 

 

 

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