| Command Summary | Command Syntax | Calculator Compatibility | Token Size |
|---|---|---|---|
| Draws a point on the graph screen. | PtOn x, y or PtOn {x1, x2, x3}, {y1, y2, y3} |
This command works on all calculators. | 2 bytes |
Menu Location
N/A
The PtOn Command
The PtOn command draws a point on the graph screen. It uses point coordinates, which means that the result is determined by window variables: the x-coordinate must be between xmin and xmax, and the y-coordinate must be between ymin and ymax (with (xmin,ymin) being the bottom left and (xmax,ymax) the top right corner).
Unlike pixel commands such as 68k:PxlOn, however, PtOn won't give an error if the coordinates happen to be outside these bounds — it simply won't have any effect (exactly the same as the 83+ version of Pt-On).
Advanced Uses
PtOn can also be used with two lists of the same size. In that case, it will draw the points for every pair of elements (xlist[n], ylist[n]). This can be used as an alternative to plots (see 68k:NewPlot) to plot a set of points.