Texas Instruments TITANIUM TI-89 - Manual (Page 857)

Appendix A: Functions and Instructions 857
PtText CATALOG
PtText string , x , y
Displays the Graph screen and places the
character string
string on the screen at the pixel
nearest the specified ( x, y ) window coordinates.
string is positioned with the upper-left corner of
its first character at the coordinates.
PtText "sample",3,5 ¸
PxlChg CATALOG
PxlChg row , col
PxlChg rowList , colList
Displays the Graph screen and reverses the pixel
at pixel coordinates (
row , col ).
Note: Regraphing erases all drawn items.
PxlChg 2,4 ¸
PxlCrcl
CATALOG
PxlCrcl row , col , r [, drawMode ]
Displays the Graph screen and draws a circle
centered at pixel coordinates (
row , col ) with a
radius of r pixels.
If drawMode = 1, draws the circle (default).
If drawMode = 0, turns off the circle.
If drawMode = -1, inverts pixels along the circle.
Note: Regraphing erases all drawn items. See
also
Circle .
PxlCrcl 40,80,30,1 ¸
PxlHorz CATALOG
PxlHorz row [, drawMode ]
Displays the Graph screen and draws a horizontal
line at pixel position
row .
If drawMode = 1, draws the line (default).
If drawMode = 0, turns off the line.
If drawMode = -1, turns a line that is on to off or
off to on (inverts pixels along the line).
Note: Regraphing erases all drawn items. See
also
LineHorz .
PxlHorz 25,1 ¸
PxlLine
CATALOG
PxlLine rowStart , colStart , rowEnd , colEnd [, drawMode ]
Displays the Graph screen and draws a line
between pixel coordinates (
rowStart , colStart ) and
( rowEnd , colEnd ), including both endpoints.
If drawMode = 1, draws the line (default).
If drawMode = 0, turns off the line.
If drawMode = -1, turns a line that is on to off or
off to on (inverts pixels along the line).
Note: Regraphing erases all drawn items. See
also
Line.
PxlLine 50,15,20,90,1 ¸