Maintenance script: Initial automated import

2016-02-24T18:32:56Z

Initial automated import

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{{Template:TI-BASIC:Command
|picture=TRACE.GIF
|summary=Displays the graph screen and allows the user to trace the currently-graphed equations and plots.
|syntax=Trace
|location=While editing a program, press the TRACE key.
|compatibility=TI-83/84/+/SE
|size=1 byte
}}

The Trace command displays the graph screen, and allows the user to trace any graphed equations or plots. It works in almost exactly the same way as pressing TRACE does outside a program. When the user presses ENTER, control returns to the program.

When tracing, [[TI-BASIC:Expron|ExprOn]] and [[TI-BASIC:Exproff|ExprOff]] affect how the currently-traced equation is displayed, and [[TI-BASIC:Coordon|CoordOn]] and [[TI-BASIC:Coordoff|CoordOff]] affect whether the coordinates of the cursor are displayed ([[TI-BASIC:Rectgc|RectGC]] and [[TI-BASIC:Polargc|PolarGC]] determine the type of coordinates).

Since the ENTER key is already used for exiting, the Trace command lacks some of the functionality of pressing TRACE outside a program, where you can use ENTER to center the graphing window on the cursor. The independent variables X, T, θ, and ''n'' cannot by directly typed in, either - they can only be selected with the arrow buttons.

= Advanced Uses =

As a side effect, the coordinates of the last point traced are stored to X and Y (as well as R and θ, if you're in [[TI-BASIC:Polargc|PolarGC]] mode, and T, θ and ''n'' depending on the graphing mode). Also, the window bounds may change if the user traces an equation past the edge of the screen.

= Error Conditions =

* '''[[TI-BASIC:Errors#invalid|ERR:INVALID]]''' is thrown if this command is used outside a program.

= Related Commands =

* [[TI-BASIC:Input|Input]]
* [[TI-BASIC:Select|Select(]]
* [[TI-BASIC:Dispgraph|DispGraph]]
* [[TI-BASIC:Disptable|DispTable]][[Category:TI-BASIC]]
[[Category:TIBD]]

TI-BASIC:Trace - Revision history

Maintenance script: Initial automated import