Texas Instruments TI-73VSC Guidebook - Page 208
Pt-On(, and Pt-Change(, Pt-Off and Pt-Change from the Graph Screen
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202 Chapter 10: Drawing Pt-On(, Pt-Off(, and Pt-Change( 2 " 1, 2, and 3 Pt-On(, Pt-Off(, and Pt-Change( turn on, off, or change the status of a point from the Graph screen, Home screen, or Program editor. A point (as opposed to a pixel) is tied directly to the X- and Yaxes. The screen is divided into X- and Y-coordinates as specified by (X,Y). The points that you can view depend upon how the WINDOW values are defined. For example, if standard WINDOW values are set, M10X10 and M10Y10. This does not mean that points outside these boundaries do not exist, only that you cannot see any turned on points outside these boundaries. Pt-On(, Pt-Off( and Pt-Change( from the Graph Screen To use Pt-On(, Pt-Off(, and Pt-Change( on the Graph screen: 1. From the Graph screen, select 2 " 1, 2, or 3. The cursor appears in the middle of the Graph screen. The Xand Y-coordinates are shown at the bottom of the screen. 2. Move the cursor: • To the position where you want to draw the point (Pt-On( ). • To the position of the point you want to erase (Pt-Off( ). • To the position of the point you want to change (toggle on or off) (Pt-Change( ). 3. Press b to draw, erase, or change the point. 4. Repeat steps 2 and 3, as necessary. To cancel Pt-On(, Pt-Off(, or Pt-Change(, press :.