Model.add_interaction

Model.add_interaction(a, b, interaction=None)

Add an interaction between two elements of the model.

Parameters:

aElement

The first element.

bElement

The second element.

interactionInteraction, optional

The interaction object.

Returns:

tuple[int, int]

The edge of the interaction graph representing the interaction between the two elements.

Raises:

Exception

If one or both of the elements are not in the graph.