HP Prime Graphing Wireless Calculator Manual de usuario descargar pdf (Pagina 625)

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Redening the View menu

The View menu allows any app to dene views in addition to the standard seven views shown in the table

above. By default, each HP app has its own set of additional views contained in this menu. The VIEW

command allows you to redene these views to run programs you have created for an app. The syntax for the

VIEW command is:

VIEW "text", function()

By adding VIEW "text", function() before the declaration of a function, you will override the list of

views for the app. For example, if your app program

denes three views—"SetSides", "RollDice" and

"PlotResults"—when you press you will see SetSides, RollDice, and PlotResults instead of the app’s

default view list.

Customizing an app

When an app is active, its associated program appears as the rst item in the Program Catalog. It is within this

program that you put functions to create a custom app. A useful procedure for customizing an app is

illustrated below:

1. Decide on the HP app that you want to customize. The customized app inherits all the properties of the

HP app.

Go to the Applications Library ( ), highlight the HP app, tap and save the app with a

unique name.

3. Customize the new app if you need to (for example, by conguring the axes or angle measure settings).

Open the Program Catalog, select your new app program, and tap .

5. Develop the functions to work with your customized app. When you develop the functions, use the app

naming conventions described above.

6. Put the VIEW command in your program to modify the app's View menu.

7. Decide if your app will create new global variables. If so, you should EXPORT them from a separate user

program that is called from the

Start() function in the app program. This way they will not have their

values lost.

8. Test the app and debug the associated programs.

It is possible to link more than one app via programs. For example, a program associated with the Function

app could execute a command to start the Statistics 1Var app, and a program associated with the Statistics

1Var app could return to the Function app (or launch any other app).

Example

The following example illustrates the process of creating a custom app. The app is based on the built-in

Statistics 1Var app. It simulates the rolling of a pair of dice, each with a number of sides specied by the user.

The results are tabulated, and can be viewed either in a table or graphically.

1. In the Application Library, select the Statistics 1Var app but don’t open it.

Select Statistics 1Var.

The User Keyboard: Customizing key presses 577

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