Texas TI-86 用户手册

102

Chapter 6: Graph Tools

06TOOLS.DOC TI-86, Chap 6, US English Bob Fedorisko Revised: 02/13/01 2:23 PM Printed: 02/13/01 3:01 PM Page 102 of 22

Before Drawing on a Graph

All drawings are temporary; they are not stored in a graph database. Any action that causes
Smart Graph to replot the graph erases all drawings. Therefore, before you use any drawing
tool, consider whether you want to perform any of these graphing activities first.

♦

Change a mode setting that affects graphs

♦

Select, deselect, or edit a current function or stat plot

♦

Change the value of a variable used in a selected function

♦

Change a window variable value

♦

Change a graph format setting or graph style

♦

Clear current drawings with

CLDRW

Saving and Recalling Drawn Pictures

To store the elements that define the current graph to a graph database (

GDB

) variable,

select

STGDB

from the

GRAPH

menu. These information types are stored to a

GDB

variable:

♦

Equation editor functions

♦

Window variable values

♦

Graph style settings

♦

Format settings

To recall the stored

GDB

later, select

RCGDB

from the

GRAPH

menu, and then select the

GDB

variable from the

GRAPH

RCGDB

menu. When you recall a

GDB

, the information stored

in the

GDB

replaces any current information of these types.

To store the current graph display, including drawings, to a picture (

PIC

) variable, select

STPIC

from the

GRAPH

menu. Only the graph picture is stored to the specified

PIC

variable.

To superimpose one or more stored graph pictures onto a graph later, select

RCPIC

from the

GRAPH

menu, and then select the

PIC

variable from the

GRAPH

RCPIC

menu.

Graph database (GDB) and
picture (PIC) variable names
can be from one to eight
characters long. The first
character must be a letter.

The next section describes
how to draw lines, points,
curves, and text onto a
graph; you then can store the
drawings to a

PIC

variable.