Texas Instruments TI-89 Titanium User Manual page 834

PxlOff
CATALOG
row col
PxlOff ,
rowList colList
PxlOff ,
Displays the Graph screen and turns off the pixel at
pixel coordinates (
Note: Regraphing erases all drawn items.
PxlOn
CATALOG
row col
PxlOn ,
rowList colList
PxlOn ,
Displays the Graph screen and turns on the pixel at
pixel coordinates (
Note: Regraphing erases all drawn items.
pxlTest()
CATALOG
) ⇒
row col
pxlTest ( ,
rowList colList
pxlTest ( ,
Returns
true
) is on. Returns
col
Note: Regraphing erases all drawn items.
PxlText
CATALOG
string row
PxlText ,
Displays the Graph screen and places character
string
string
coordinates (
is positioned with the upper-left corner of its
string
first character at the coordinates.
Note: Regraphing erases all drawn items.
PxlVert
CATALOG
col drawMode
PxlVert [,
Draws a vertical line down the screen at pixel
position
col
If
drawMode
If
drawMode
If
drawMode
on (inverts pixels along the line).
Note: Regraphing erases all drawn items. See also
.
LineVert
Appendix A: Functions and Instructions
, ).
row col
, ).
row col
Boolean expression
) ⇒
Boolean expression
if the pixel at pixel coordinates (
if the pixel is off.
false
col
,
on the screen, starting at pixel
,
).
row col
]
.
= 1, draws the line (default).
= 0, turns off the line.
= -1, turns a line that is on to off or off to
PxlHorz 25,1 ¸
PxlOff 25,50 ¸
25,50
PxlOn 25,50 ¸
PxlOn 25,50 ¸
@
"
¥ "
H
,
row
PxlTest(25,50) ¸
PxlOff 25,50 ¸
@
"
¥ "
H
PxlTest(25,50) ¸
@
PxlText "sample
text",20,10 ¸
H
PxlText "sample
text",20,50 ¸
PxlVert 50,1 ¸
true
false
831