Polygons by Union

This function allows you to create new closed segments by performing a polygon union between two selected closed segments.

To run this function: Choose Create > Polygons by > Union, or...

• In the Function Chooser, type UNION STRINGS, and press ENTER.

Press the relevant button on the DESCRIPTION FIELDS FOR RESULT STRING form to display the prompt:

Select the intersecting shape

Position the pointer and select a point which is on the intersecting segment.

At the prompt:

Select the shape to be intersected

Position the pointer and select a point which is on the intersected segment.

The UnionStrings function will continue until the Cancel button is pressed.

The two closed segments are joined to produce new closed segments. The new segments enclose the areas which are not common to both the original segments.

String xxx segment yyy is closed direction is made Clockwise.

This message advises you of the new segments which are created during execution of the function.

String xxx segment yyy is open. It must be closed to continue