Add a mutually exclusive group of clients

Defines a group from which at most one client is visited (or exactly one if required = TRUE). Useful for prize-collecting with exclusive alternatives (e.g. serving one of several equivalent points). Clients in the group automatically become optional (individual required = FALSE); use prize to encourage a visit.

Usage

add_client_group(model, clients, required = FALSE)

Arguments

model

A vrpr_model.

clients

Vector of client numbers (1-based, in the order of add_clients()) that form the group.

required

If TRUE, exactly one client in the group must be visited; if FALSE (default), at most one.

Value

The updated vrpr_model.