Point Tool
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The point tool displays the position of the mouse cursor on the graph view in rectangular or polar coordinates.

Select the point tool from the graph tools tool bar.

When the point tool is selected, the point tool dialog box is displayed.

This diagram shows the point tool being used to plot graph points by pointing and clicking. The point tool dialog box shows the coordinates of the point tool cursor:

Select the point tool from the graph tools tool bar.

When the point tool is selected, the point tool dialog box is displayed (See above:).

Drag on the title bar at the top of the point tool dialog box to move it.

Check the 'Trace' check box to trace points along a function curve or set of (x,y) points.

Check the 'Snap to grid' option to locate the point tool cursor at the corner of grid snap rectangles.

Check the 'Guides' check box to display ruled coordinate lines on the graph view. If the 'Polar' check box is not checked, then horizontal and vertical lines are ruled through the cursor. If the 'Polar' check box is checked, then a line joins the cursor position to the origin.

Click the 'Cancel' button to stop using the point tool.

The point tool dialog box displays:

The 'x' and 'y' coordinates of the cursor position if the 'Polar' check box is not checked.

The polar coordinates 'r' and 'T' of the cursor position if the 'Polar' check box is checked. ('r' is the distance from the origin to the cursor position, and 'T' is the angle that the straight line from the origin to the cursor makes with the positive direction of the 'x' axis.)

How to plot points using the point tool:

Position the point tool cursor on the graph view.

Click the left mouse button. The point tool draws a temporary mark on the graph view and stores the point in memory. No points have been plotted yet.

Continue clicking on as many points as are required. These will all be stored in memory.

Click the 'Plot' button on the point tool dialog box to plot the stored points and clear the points from memory.