Union/crossing of sets

The mode is intended for work with objects from a file of lists.

For work you must select: a map for placing the result, two lists of objects (better the different), type of operation being performed (crossing, union, union of crossings) and kinds of resulting objects.

Dialogue «Union/crossing of lists»:

The result of the work are the newly created objects by a certain way.

At creation of objects by type the Crossing, output object will be the object created by the intersection of object from 1 list with object from 2 list. The resulting object will be of the following type:

- at crossing of two polygon - the polygon object;

- at crossing of the  polygon and linear objects - both the  polygon and linear objects;

- at crossing of two linear closed objects - two linear non-closed objects;

- at crossing of two linear non-closed objects - the object-result will not be created.

At creation of objects by type "union", the output objects will be the objects of both lists, thus, crossed or touching each other's objects will be united into one. The polygon objects are processed only.

At creation of objects by type the Union of crossings, output objects will be the objects received at first by intersection of the objects of 1 list with objects of 2 list, and then the crossed or touching each other's objects will be united into one.