Chapter 12: Additional Graphing Topics 219
12ADDLGR.DOC TI-89/TI-92 Plus: Additional Graphing Tools (English) Susan Gullord Revised: 02/23/01 1:03 PM Printed: 02/23/01 2:15 PM Page 219 of 20
Before using CyclePic, you must have a series of graph pictures that
have the same base name and are sequentially numbered starting
with 1 (such as pic1, pic2, pic3, . . . ).
To cycle the pictures, use the syntax:
CyclePic picNameString, n [,wait] [,cycles] [,direction]
This example program (named cyc) generates 10 views of a 3D
graph, with each view rotated 10¡ further around the Z axis. For
information about each command, refer to Appendix A. For
information about using the Program Editor, refer to Chapter 17.
Program Listing Every Other Graph from Program
:cyc()
:Prgm
:local i
:¦Set mode and Window variables
:setMode(“graph”,”3d”)
:70!eyef
:ë10!xmin
:10!xmax
:14!xgrid
:ë10!ymin
:10!ymax
:14!ygrid
:ë10!zmin
:10!zmax
:1!zscl
:¦Define the function
:(x^3ùyìy^3ùx)/390!z1(x,y)
:¦Generate pics and rotate
:For i,1,10,1
: iù10!eyeq
: DispG
: StoPic #("pic" & string(i))
:EndFor
:¦Display animation
:CyclePic "pic",10,.5,5,ë1
:EndPrgm
After entering this program on the Program Editor, go to the Home
screen and enter cyc().
Animating a Series of Graph Pictures
As described earlier in this chapter, you can save a picture of
a graph. By using the CyclePic command, you can flip
through a series of graph pictures to create an animation.
CyclePic Command
Example
Note: Due to its complexity,
this program takes several
minutes to run.
# of times to repeat cycle
1 = forward/circular cycle
ë1= forward/backward
seconds between pictures
# of pictures to cycle
base name of pictures in quotes, such as "pic"
For #, press TI-89: ½
TI-92 Plus: 2½
and select it from the list.
For &, press:
TI-89: ¥p
TI-92 Plus: 2H
For f, press:
TI-89: ¥cjF
TI-92 Plus:
¥GF
Comments start with ¦.
Press:
TI-89: ¥ d
TI-92 Plus:
2 X