Union

The union operation computes the spatial union between the geometries of two layers. The set whose geometries are either in the input layer or geometries in the overlay layer or both will be united and included in an output layer.


Click on PROCESSING → VECTOR PROCESSING → UNION.


Input layer: Select the layer to be united with the overlay layer.

Overlay layer: Select the overlay layer.

Only selected objects: check this box if only selected objects will have the union operation.

Attributes tab: Choose the attributes to be included in the output layer from the left list and click on the right arrow to transfer to the right list.

Output object type tab: Choose if there will be single or multi objects.

Repository: Select one type of repository by clicking on the button to save the output layer as a file or on the button to save it in the database.