/ Filters / Chapter 35. Using spatial properties of features in filters / Numbers of feature intersections and inclusions

Intersection Or Inclusion of Argument Features property

In the case tested feature and argument feature are changing in places. When matching the tested feature with each of argument features the Intersection Or Inclusion of Argument Features property is satisfied if for that pair of features either intersection or inclusion of the given argument feature into the tested feature occurs.

In other words, the Intersection Or Inclusion of Argument Features property expresses the fact that the argument feature is located fully or partially within an inner region of the tested feature but does not completely cover it.

It is convenient to use this property if it is required to evaluate the number of argument features lying fully or partially within the tested feature. For example, it allows to divide building blocks onto groups differing by number of buildings in the block.

To use this property it is required that tested feature has inner region, i.e. this feature should belong to area, image or text spatial category. Argument features can be of any spatial category.