Texas Instruments TI-89, TI-92

Chapter 15: Data/Matrix Editor 245

15DATAMA.DOC TI-89/TI-92 Plus: Data/Matrix Editor (English) Susan Gullord Revised: 02/23/01 1:10 PM Printed: 02/23/01 2:17 PM Page 245 of 16

¦ In a matrix variable, when you enter a value in a cell outside the

current boundaries, additional rows and/or columns are added

automatically to the matrix to include the new cell. Other cells in

the new rows and/or columns are filled with zeros.

The cell width affects how many characters are displayed in any cell.

To change the cell width in the Data/Matrix Editor:

1. To display the FORMATS dialog box, press ƒ 9

— or —

TI-89: ¥Í

TI-92 Plus: ¥F

Cell width is the maximum

number of characters that can

be displayed in a cell.

All cells have the same cell

width.

2. With the current Cell Width setting highlighted, press B or A to

display a menu of digits (3 through 12).

3. Move the cursor to highlight a number and press ¸. (For

single-digit numbers, you can type the number and press ¸.)

4. Press ¸ to close the dialog box.

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

the column.

To clear: Do this:

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

2. TI-89: 2ˆ

TI-92 Plus: ˆ

and select 5:Clear Column. (This item is not

available for a matrix.)

ll columns Press ƒ and select 8:Clear Editor. When prompted

for confirmation, press ¸ (or N to cancel).

Note: Although you specify

the size of a matrix when

ou create it, you can easily

add additional rows and/or

columns.

Changing the

Cell Width

Tip: Remember, to see a

number in full precision, you

can always highlight the cell

and look at the entry line.

Clearing a Column

or all Columns

Note: For a list or data

variable, a clear column is

empty. For a matrix, a clear

column contains zeros.