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Merge branch 'master' of https://github.com/google/or-tools

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Laurent Perron
2018-05-31 10:53:47 -07:00
parent 333a004878 efc46ca1bf
commit 0b86e8e5f2
4 changed files with 43 additions and 9 deletions
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32
examples/python/cvrptw.py
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@@ -247,11 +247,25 @@ def add_time_window_constraints(routing, data, time_evaluator):
time_evaluator,
horizon, # allow waiting time
horizon, # maximum time per vehicle
True, # start cumul to zero
False, # don't force start cumul to zero since we are giving TW to start nodes
time)
time_dimension = routing.GetDimensionOrDie(time)
# Add time window constraints for each location except depot
# and "copy" the slack var in the solution object (aka Assignment) to print it
for location_idx, time_window in enumerate(data.time_windows):
time_dimension.CumulVar(location_idx).SetRange(time_window[0], time_window[1])
if location_idx == 0:
continue
index = routing.NodeToIndex(location_idx)
time_dimension.CumulVar(index).SetRange(time_window[0], time_window[1])
routing.AddToAssignment(time_dimension.SlackVar(index))
# Add time window constraints for each vehicle start node
# and "copy" the slack var in the solution object (aka Assignment) to print it
for vehicle_id in xrange(data.num_vehicles):
index = routing.Start(vehicle_id)
time_dimension.CumulVar(index).SetRange(data.time_windows[0][0], data.time_windows[0][1])
routing.AddToAssignment(time_dimension.SlackVar(index))
# Warning: Slack var is not defined for vehicle's end node
#routing.AddToAssignment(time_dimension.SlackVar(self.routing.End(vehicle_id)))
###########
# Printer #
@@ -302,7 +316,14 @@ class ConsolePrinter():
time_var = time_dimension.CumulVar(index)
time_min = self.assignment.Min(time_var)
time_max = self.assignment.Max(time_var)
plan_output += ' {0} Load({1}) Time({2},{3}) ->'.format(node_index, route_load, time_min, time_max)
slack_var = time_dimension.SlackVar(index)
slack_min = self.assignment.Min(slack_var)
slack_max = self.assignment.Max(slack_var)
plan_output += ' {0} Load({1}) Time({2},{3}) Slack({4},{5}) ->'.format(
node_index,
route_load,
time_min, time_max,
slack_min, slack_max)
index = self.assignment.Value(self.routing.NextVar(index))
node_index = self.routing.IndexToNode(index)
@@ -314,7 +335,10 @@ class ConsolePrinter():
time_max = self.assignment.Max(time_var)
total_dist += route_dist
total_time += route_time
plan_output += ' {0} Load({1}) Time({2},{3})\n'.format(node_index, route_load, time_min, time_max)
plan_output += ' {0} Load({1}) Time({2},{3})\n'.format(
node_index,
route_load,
time_min, time_max)
plan_output += 'Distance of the route: {0}m\n'.format(route_dist)
plan_output += 'Load of the route: {0}\n'.format(route_load)
plan_output += 'Time of the route: {0}min\n'.format(route_time)