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Appendix A: Functions and Instructions 507
8992APPA.DOC TI-89 / TI-92 Plus: Appendix A (US English) Susan Gullord Revised: 02/23/01 1:48 PM Printed: 02/23/01 2:21 PM Page 507 of 132
stdDev(matrix1
[
, freqmatrix
]
)
⇒
matrix
Returns a row vector of the standard
deviations of the columns in
matrix1
.
Each
freqmatrix
element counts the number
of consecutive occurrences of the
corresponding element in
matrix1
.
Note:
matrix1
must have at least two rows.
stdDev([1,2,5;-3,0,1;.5,.7,3])
¸
[2.179
...
1.014
...
2]
stdDev([L1.2,5.3;2.5,7.3;6,L4],
[4,2;3,3;1,7])
¸
[2.7005,5.44695]
StoGDB
CATALOG
StoGDB GDBvar
Creates a Graph database (GDB) variable
that contains the current:
* Graphing mode
* Y= functions
* Window variables
* Graph format settings
1- or 2-Graph setting (split screen and ratio
settings if 2-Graph mode)
Angle mode
Real/complex mode
* Initial conditions if Sequence or
Diff Equations mode
* Table flags
* tblStart,
@
tbl, tblInput
You can use
RclGDB
GDBvar
to restore the
graph environment.
*
Note:
These items are saved for both graphs
in 2-Graph mode.
Stop
CATALOG
Stop
Used as a program instruction to stop
program execution.
Program segment:
©
For i,
1
,
1
0,
1
If i=5
Stop
En
d
For
©
StoPic
CATALOG
StoPic picVar
[
, pxlRow, pxlCol
]
[
, width, height
]
Displays the graph screen and copies a
rectangular area of the display to the variable
picVar
.
pxlRow
and
pxlCol
, if included, specify the
upper-left corner of the area to copy (defaults
are 0, 0).
width
and
height
, if included, specify the
dimensions, in pixels, of the area. Defaults
are the width and height, in pixels, of the
current graph screen.
Store
See
!
(store)
, page 539.