HP Prime Graphing NW280AAABA manual Customizing an app, Example

Customizing an app

Example

When an app is active, its associated program appears as the first 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.

2.Go to the Applications Library (I), 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 configuring the axes or angle measure settings).

4.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).

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

522 Programming in HP PPL