difference between SetAllowedVehiclesForIndex and VehicleVar(index).SetValues(vehicle_idx)

[Lingaswamy Dacharam]

Hello Guys,

Can anyone please explain the difference between these functions.
1.routing.VehicleVar(index).SetValues(vehicle_idx)
2.routing.SetAllowedVehiclesForIndex(vehicle_idx, index)

VehicleVar(index).SetValues(vehicle_idx) is working fine when we have less data(i.e no of nodes and no of. vehicles), if we increase the data(i.e no of nodes) solver is not giving output. however when I use SetAllowedVehiclesForIndex solver comes out with proper solution. I didn't understand why, I would like to know each function's functionalities and where we suppose to use according to it.

Thank you in advance,

Regards,
Lingaswamy

[Lingaswamy Dacharam]

Can someone please help on this.

[Laurent Perron]

https://github.com/google/or-tools/blob/86d4c543f717fa8716a9d66c25143660668bf825/ortools/constraint_solver/routing.cc#L1809

SetAllowedVehiclesForIndex... -> fills the allowed_vehicles_[node] list.

this is used here: https://github.com/google/or-tools/blob/86d4c543f717fa8716a9d66c25143660668bf825/ortools/constraint_solver/routing.cc#L2306

so SetAllowedVehiclesForIndex(v, a); SetAllowedVehiclesForIndex(v, b); is equivalent to routing.VehicleVar(index).SetValues([a, b, -1]);

Laurent Perron | Operations Research | lpe...@google.com | (33) 1 42 68 53 00

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[Lingaswamy Dacharam]

Thank you, laurent