Texas Instruments TITANIUM TI-89 - Manual (Page 523)

Data/Matrix Editor 523
Deleting a Variable Deleting a Variable Deleting a Variable Deleting a Variable
Because all Data/Matrix Editor variables are saved automatically, you can accumulate
quite a few variables, which take up memory.
To delete a variable, use the VAR-LINK screen ( 2 °). For information about
VAR-LINK, refer to Memory and Variable Management.
Entering and Viewing Cell Values Entering and Viewing Cell Values Entering and Viewing Cell Values Entering and Viewing Cell Values
If you create a new variable, the Data/Matrix Editor is initially blank (for a list or data
variable) or filled with zeros (for a matrix). If you open an existing variable, the values in
that variable are displayed. You can then enter additional values or edit the existing
ones.
The Data/Matrix Editor Screen The Data/Matrix Editor Screen The Data/Matrix Editor Screen The Data/Matrix Editor Screen
A blank Data/Matrix Editor screen is shown below. When the screen is displayed initially,
the cursor highlights the cell at row 1, column 1.
К
Л
М
Н
О
К
Variable type
Ë
Column headers
Ì
Row numbers
Í
Row and column number
of highlighted cell
Î
Column title cells, used
to type a title for each
column