Texas Instruments TINSPIRE Teacher Software Guidebook - Page 559

2. Type a name for the list variable, and press ·. The column is now available as a list variable to other TI-Nspire™ applications. 3. Create elements in the list the same as you would create data in spreadsheet cells. For example, you can type the data into each cell or use a formula to generate a column of data. Notes: • If a variable with the name you specified already exists in the current problem, Lists & Spreadsheet displays an error message. • When you select the column formula cell of a list, it displays the list name in an expression similar to width:=. • Lists can contain empty elements (denoted by "_") . • You can refer to a specific element in a named list from the Calculator application. Use the list name and the element's position within the list. In a list named Heights, for example, refer to the first element as Heights[1]. The expression Heights[2] refers to the second element, and so on. Linking to an existing list variable Linking a column to an existing list variable lets you easily view and edit the values in the list. The list can be any shared list in the current problem and can be defined in Graphs & Geometry, Calculator, or any instance of Lists & Spreadsheet. After you link a column to a list, Lists & Spreadsheet automatically shows any changes that you make to the list with other TI-Nspire™ applications. 1. Click the column formula cell (the second cell from the top) of the column that you want to link to the variable. 2. Type the name of the list variable you want to link to. - or - Click on the toolbar (press h on the handheld), click Link To, and select the variable you want to link to. 3. Press ·. The column shows the list elements. Notes: • You cannot link to the same variable multiple times on the same page. Using Lists & Spreadsheet 547