You can use Lists & Spreadsheet application to capture information about objects in the TI-Nspire™ Apps for iPad®. For example, you could track changes of the position of a point on a graph in the Graphs & Geometry application.
The ability to capture data manually is not limited to Graphs & Geometry. This function could work for any other application in the same problem.
| 1. | Tap the column formula cell (the second cell from the top) of the column in which you want to capture the values. |
Note: Captured values replace values in the column.
| 2. | Tap Tools  and go to Data > Data Capture >Manual. |
A capture expression is inserted into the column formula cell with "var" as a placeholder for the name of the variable you are capturing.
| 3. | Replace the letters “var” with the name of the variable to capture from Graphs & Geometry. For example, type a or to view a list of available variables, tap var on the TI‑Nspire™ Keyboard. |
The formula cell now contains an expression similar to =capture(a,0).
Note: The argument “0” tells Lists & Spreadsheet that you want to trigger each capture manually.
| 4. | Tap Enter. |
| 5. | From the Graphs & Geometry application, move the point to a different location where x coordinate of the point is stored in a variable (a, in this example) referenced in the data capture expression. |
| 6. | Tap  . |
The current a value is stored in the Lists & Spreadsheet application configured to capture the variable a.
See Using Variables for more information on adding and using variables.