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Note:
Lines, points, and curves drawn by the Draw menu are handled as
pictures. Therefore, they cannot be traced.
Graphs drawn by the Draw menu are automatically cleared if any
screen settings are changed. To save the graph, use the StoPict
menu.
B POINT
Utilize these tools to manage point drawing and deletion on the
graph.
There are two operation methods. One is to directly move the
cursor pointer to the location on the graph screen where you wish
to insert the point. The other is to call a relevant command on the
Calculation screen and to directly input the coordinates to draw or
delete the point. (X and Y coordinates should be separated by a
comma.)
1 PntON(
2 PntOFF(
3 PntCHG(
PntON(x-coordinate, y-coordinate)
Draws a point at a given coordinate. It takes the X-Y
coordinate as an argument.
This tool can either be accessed from the GRAPH
window or other windows. Entering from the GRAPH
window enables a graphic entry, while entering from
other windows enables text-based entry.
PntOFF(x-coordinate, y-coordinate)
Erases a pixel point. It takes the X-Y coordinate as an
argument.
PntCHG(x-coordinate, y-coordinate)
Changes the status (i.e., visible/invisible) of a pixel at a
given coordinate. Deletes the point when it is displayed
and draws the point when it is not displayed.
Chapter 4: Graphing Features
105
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