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oblonski 2016-09-01 12:25:57 +02:00
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docs/before-1.7/VRP-with-depot-bounded-pickups-and-deliveries.md
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This example assumes that you know [SimpleExample](https://github.com/jsprit/jsprit/wiki/Simple-Example) and covers:
This example assumes that you know [SimpleExample](Simple-Example.md) and covers:
- defining pickups and deliveries
<strong>Note</strong> that the VRP with Backhauls with mixed pickups and deliveries described here assumes that all deliveries are loaded in the depot at the beginning of a tour and all pickups are unloaded in the depot as well (at the end of the tour). En route pickup and deliveries such that a shipment is loaded at location A and unloaded again at location B within the same route (where A and B are unequal to the depot location) is covered [here](https://github.com/jsprit/jsprit/wiki/VRP-with-pickups-and-deliveries/).
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*/
Pickup pickup1 = (Pickup) Pickup.Builder.newInstance("1").addSizeDimension(0,1).setCoord(Coordinate.newInstance(5, 7)).build();
Delivery delivery1 = (Delivery) Delivery.Builder.newInstance("2").addSizeDimension(0,1).setCoord(Coordinate.newInstance(5, 13)).build();
Pickup pickup2 = (Pickup) Pickup.Builder.newInstance("3").addSizeDimension(0,1).setCoord(Coordinate.newInstance(15, 7)).build();
Delivery delivery2 = (Delivery) Delivery.Builder.newInstance("4").addSizeDimension(0,1).setCoord(Coordinate.newInstance(15, 13)).build();
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The first customer in a route is marked with a red circle to indicate the orientation of the route. The labels represent the size of the pickup and delivery respectively. It is interesting to compare this with the solution of the same problem but with backhauls constraint, i.e. deliveries have to be conducted first (before pickups can be loaded) (see [VRP with backhauls](https://github.com/jsprit/jsprit/wiki/VRP-with-backhauls-example)).
<img src="https://github.com/jsprit/misc-rep/raw/master/wiki-images/vrpwbh_christophides_vrpnc1_solution.png">
<img src="https://github.com/jsprit/misc-rep/raw/master/wiki-images/vrpwbh_christophides_vrpnc1_solution.png">