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     Chapter 20: A to Z Function and Instruction Reference
20ATOZ.DOC   TI-86, Chap 20, US English   Bob Fedorisko   Revised: 02/13/01 2:42 PM   Printed: 02/13/01 3:05 PM   Page 282 of 118
#ofElements
dim 
vectorName
If vectorName does not exist, creates a new vector with
the specified #ofElements and fills it with zeros.
If vectorName exists, redimensions that vector to the
specified #ofElements. Existing elements within the
new dimension are not changed; elements outside the
new dimension are deleted. If additional elements are
created, they are filled with zeros.
DelVar(VEC) b
Done
4¶dim VEC b
4
VEC b
[0 0 0 0]
[1,2,3,4]¶VEC b
[1 2 3 4]
2¶dim VEC b
2
VEC b
[1 2]
3¶dim VEC b
3
VEC b
[1 2 0]
dimL
LIST OPS menu
dimL 
list
Returns the length (number of elements) of a real or
complex list.
dimL {2,7,
L
8,0} b
4
1/dimL {2,7,
L
8,0} b
.25
dimL
X
, then LIST OPS
menu
#ofElements
dimL 
listName
If listName does not exist, creates a new list with the
specified #ofElements and fills it with zeros.
If listName exists, redimensions that list to the
specified #ofElements. Existing elements within the
new dimension are not changed; elements outside the
new dimension are deleted. If additional elements are
created, they are filled with zeros.
3¶dimL NEWLIST b
3
NEWLIST b
{0 0 0}
{2,7,
L
8,1}¶L1 b
{2 7 
L
8 1}
5¶dimL L1 b
5
L1 b
{2 7 
L
8 1 0}
2¶dimL L1 b
2
L1 b
{2 7}
DirFld
† graph format screen
(scroll down to second
screen)
DirFld
In 
DifEq
 graphing mode, turns on direction fields. To
turn off direction and slope fields, use 
FldOff
.