Intersection

The intersection operation computes the spatial intersection between the geometries of two layers. The geometries of the input layer that have an intersection with the geometries of the overlay layer will be cut and included in an output layer.


Click on PROCESSING → VECTOR PROCESSING → INTERSECTION.


Select the input layer and the overlay layer. Check the Only Selected Objects box to apply the intersection only over selected objects.

All attributes of both layers will be showed in the list below. Choose the attributes to be included in the output layer and click on the right arrow button to include them in the right list.

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.

Enter the name of the output layer and click on the OK button.



Note: If the Input layer and the Overlay layer are in different SRSs (Spatial Reference System) the geometries of the Overlay layer will be converted before executing the operation. If only one of them have an unknown SRS a message will be issued, since no conversion will be possible and the result might be incorrect.