Package index • vrpr

Modelling

Build a VRP model by piping together depots, clients and vehicle types.

vrp_model(): Build a vehicle routing (VRP) model
add_depot(): Add a depot to the model
add_clients(): Add clients to the model
add_vehicle_type(): Add a vehicle type to the model
add_client_group(): Add a mutually exclusive group of clients

Solving

Run the iterated local search solver and control when it stops.

vrp_solve(): Solve a VRP model
ils_params(): ILS solver parameters
max_runtime() max_iterations() no_improvement() first_feasible(): Solver stopping criteria

Results

Inspect and visualise a solution.

cost(): Cost of a result or solution
routes(): Routes of a solution, in long (tidy) format
summary(<vrpr_result>): One-row summary of a result (tibble)
unvisited_clients(): Unvisited optional clients
plot(<vrpr_result>): Plot the solution of a VRP result
plot(<vrpr_model>): Plot a VRP model (depots and clients only)

Reading instances

Read standard VRPLIB and Solomon instance files.

read_vrplib(): Read an instance in VRPLIB / TSPLIB format
read_solomon(): Read a VRPTW instance in Solomon format

Lower-level building blocks

Direct access to the problem data, solutions and cost evaluator.

vrp_problem_data(): Assemble the problem data (ProblemData) from a model
vrp_solution(): Build a solution from explicit routes
vrp_random_solution(): Generate a random solution
vrp_cost_evaluator(): Cost evaluator (CostEvaluator)
solution_cost(): Cost of a solution