| vehicle 1 | vehicle 2 | vehicle 3 | vehicle 4 | |
|---|---|---|---|---|
| node 1 | 1 | 1 | 0 | 0 |
| node 2 | 0 | 1 | 1 | 0 |
| node 3 | 0 | 0 | 1 | 1 |
As could be seen from the matrix, a node could only be served by a specified list of vehicles. Node 1 should be served by vehicle 1 or vehicle 2, but not vehicle 3 or vehicle 4.
I tried to modify the solution proposed here (In or-tools, VRPTW, how can I give each vehicle a different weight/score for each node?), but it didn't work. Is there any way to add this type of constraint to VRPTW.
routing.VehicleVar(node_index).RemoveValues([list of vehicle to remove])e.g. for node 1
node_one_idx = manager.NodeToIndex(1)
routing.VehicleVar(node_one_idx).RemoveValues([3, 4]) # forbidd vehicle 3 and 4
note: vehicle index start at 0 so 3rd and 4th vehicle should be vehicle index 2 and 3...