The "Intersect" functionality known from GIS describes the overlap of two subject levels of the same area section with the aim of gaining new information. This can be used to link two network objects which overlap each other (intersection) and saves the thus resulting information in an attribute (Using Visum: Intersecting objects). To create a demand model, GIS structure data (such as the number of employees or the number of pupils) can for example be read in POI polygons and these intersected with zones. The result being the type of structure data for each zone (number of employees or pupils per zone) in a Visum attribute.
