Group

Function Description

The group function combines any objects (of the same or different geometry types) in the current layer into a compound.

Combine objects of the same or different types to create a new compound. Objects of the same type in line and polygon layers can be grouped. Objects of different types in a CAD composite layer can be grouped.
In the attributes of the newly created compound, system fields (except SmUserID) are assigned by the system. The SmUserID field and non-system fields inherit the corresponding information from the object with the smallest SmID value among the grouped objects.
Supports grouping of geometry across layers.
In a point dataset, grouping of point objects is not supported.
When the number of overlapping polygon areas is even, the overlapping region appears white after grouping and is part of the result data.

Edit Data Tab -> Object Editing Group -> General editing -> Group and Ungroup -> Group
In the map -> Context Menu -> Group button.

With the layer in editable state, select two or multiple objects.
On the Edit Data tab, in the General editing drop-down menu, click the Group button in the Group and Ungroup group to combine the selected objects.
Or perform the following:

Select the two objects to be merged, right-click, and choose the Group command from the context menu.


Original Objects	CAD Layer Group Result	Polygon Layer Group Result	Union Result

Merge can only operate on objects of the same type, while group can operate on objects of different types.
Merge cannot operate on point objects, while group can operate on point objects in text layers.

Notes:

After performing a group operation in a polygon layer, the overlapping areas of two polygon objects appear white; this is part of the result and not a missing area.
When there is a containment relationship between the grouped polygon objects, it is treated as a donut polygon, and the result is consistent with the donut polygon result.