faq 110497360

Error in TransitLeastCostPathTree

by Ecaterina McCormick on 2017-07-07 09:59:55

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Hi Matsim community,

Could you please advise on  how can I debug the following error:

2017-07-07 07:17:31,528 ERROR ParallelPersonAlgorithmRunner$ExceptionHandler:163 Thread PersonPrepareForSim.13 died with exception while handling events.
 java.lang.NullPointerException
 at org.matsim.pt.router.TransitLeastCostPathTree.relaxNode(TransitLeastCostPathTree.java:285)
 at org.matsim.pt.router.TransitLeastCostPathTree.expandNodeData(TransitLeastCostPathTree.java:177)
 at org.matsim.pt.router.TransitLeastCostPathTree.<init>(TransitLeastCostPathTree.java:134)
 at org.matsim.pt.router.TransitRouterImpl.calcRoute(TransitRouterImpl.java:137)
 at org.matsim.core.router.TransitRouterWrapper.calcRoute(TransitRouterWrapper.java:82)
 at org.matsim.core.router.TripRouter.calcRoute(TripRouter.java:182)
 at org.matsim.core.router.PlanRouter.run(PlanRouter.java:84)
 at org.matsim.core.population.algorithms.PersonPrepareForSim.run(PersonPrepareForSim.java:138)
 at org.matsim.core.population.algorithms.ParallelPersonAlgorithmRunner$PersonAlgoThread.run(ParallelPersonAlgorithmRunner.java:144)
 at java.lang.Thread.run(Thread.java:745)

This is happening only when I add bus journeys in the plans. The same configuration works fine with car only journeys.

TransitLeastCostPathTree.relaxNode location would indicate that there are no out links for certain nodes.

for (Link l : outNode.getOutLinks().values()) {
 relaxNodeLogic(l, pendingNodes, currTime, currCost);
 }

Maybe some of you experienced this before.

Thank you,

Ecaterina

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Comments: 1

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Re: Error in TransitLeastCostPathTree

by Kai Nagel on 2017-09-02 10:59:25

Hm.  Normally this happens when your network has node that have no outgoing links.  Running NetworkCleaner will prevent this.  At this point, I fail to see why it should work for cars only, and fail if you start using pt.  But who knows.  Could you please try and see if NetworkCleaner fixes the problem?