Defining a column header with an expression – Texas Instruments TITANIUM TI-89 User Manual

Page 528

Data/Matrix Editor

528

Clearing a Column or all Columns

This procedure erases the contents of a column. It does not delete the column.

Note:

For a list or data variable, a clear column is empty. For a matrix, a clear column

contains zeros.

Defining a Column Header with an Expression

For a list variable or a column in a data variable, you can enter a function in the column
header that automatically generates a list of elements. In a data variable, you can also
define one column in terms of another.

Entering a Header Definition

In the Data/Matrix Editor:

To clear:

Do this:

A column

1. Move the cursor to any cell in the column.

Press:

2 ˆ

and

select

5:Clear Column.

(This item is not available for a matrix.)

All columns

Press

and select 8:Clear Editor. When prompted for

confirmation, press

(or

to cancel).