AnyLogic:基于Agent仿真的不可达目标

Question

我正在建造一个机场模型，里面有乘客产卵、购物、进食和离开。

大多数乘客冲到他们的GateArea (多边形节点)，并在那里等待，直到他们认为这是适当的自由裁量活动。当他们考虑离开GateArea时，他们会产生一个“吃”--或者说“商店”--目标，并被转移到一个与相应商店链接的PedGoTo中。在这一点上，我有时会遇到这样的错误：

java.lang.RuntimeException: root.pGT_F_B2.pedGoToTarget:
Unreachable target: (599.37, 398.48) on level 'name: level' for pedestrian 'id: 46' located at: (467.15, 222.68) on level 'name: level'!
    at com.anylogic.engine.Engine.error(Unknown Source)
    at com.anylogic.engine.Agent.error(Unknown Source)
    at com.anylogic.engine.Utilities.error(Unknown Source)
    at com.anylogic.libraries.pedestrian.PedBlock_xjal.error(Unknown Source)
    at com.anylogic.libraries.pedestrian.PedGoTo_xjal.d(Unknown Source)
    at com.anylogic.libraries.pedestrian.PedGoTo_xjal.c(Unknown Source)
    at com.anylogic.libraries.pedestrian.PedGoTo_xjal.g(Unknown Source)
    at com.anylogic.libraries.pedestrian.PedGoTo_xjal.f(Unknown Source)
    at com.anylogic.libraries.pedestrian.PedGoTo_xjal.d(Unknown Source)
    at com.anylogic.libraries.pedestrian.PedGoTo_xjal.a(Unknown Source)
    at com.anylogic.libraries.pedestrian.PedGoTo_xjal.a(Unknown Source)
    at com.anylogic.libraries.pedestrian.PedGoTo_xjal$1.onEnter(Unknown Source)
    at com.anylogic.libraries.processmodeling.Delay.b(Unknown Source)
    at com.anylogic.libraries.processmodeling.Delay.b(Unknown Source)
    at com.anylogic.libraries.processmodeling.Delay$9.onEnter(Unknown Source)
    at com.anylogic.libraries.processmodeling.InputBlock$1.b(Unknown Source)
    at com.anylogic.libraries.processmodeling.InPort.a(Unknown Source)
    at com.anylogic.libraries.processmodeling.InPort.receiveImmediately(Unknown Source)
    at com.anylogic.libraries.processmodeling.InputBlock$1.a(Unknown Source)
    at com.anylogic.libraries.processmodeling.OutPort.a(Unknown Source)
    at com.anylogic.libraries.processmodeling.OutPort.b(Unknown Source)
    at com.anylogic.libraries.processmodeling.PlainTransfer$1.a(Unknown Source)
    at com.anylogic.libraries.processmodeling.OutPort.a(Unknown Source)
    at com.anylogic.libraries.processmodeling.OutPort.b(Unknown Source)
    at com.anylogic.libraries.processmodeling.OutputBlock.forwardReadyEntityNotification(Unknown Source)
    at com.anylogic.libraries.processmodeling.InputBlock$1.a(Unknown Source)
    at com.anylogic.libraries.processmodeling.OutPort.a(Unknown Source)
    at com.anylogic.libraries.processmodeling.OutPort.b(Unknown Source)
    at com.anylogic.libraries.processmodeling.OutPort.a(Unknown Source)
    at com.anylogic.libraries.processmodeling.OutputBlock.a(Unknown Source)
    at com.anylogic.libraries.processmodeling.OutputBlock.a(Unknown Source)
    at com.anylogic.libraries.processmodeling.OutputBlock$2.a(Unknown Source)
    at com.anylogic.libraries.processmodeling.OutputBlock$2.action(Unknown Source)
    at com.anylogic.libraries.processmodeling.AsynchronousExecutor_xjal$a.execute(Unknown Source)
    at com.anylogic.engine.LibraryEventHandler$b.execute(Unknown Source)
    at com.anylogic.engine.Engine.c(Unknown Source)
    at com.anylogic.engine.Engine.fi(Unknown Source)
    at com.anylogic.engine.Engine.n(Unknown Source)
    at com.anylogic.engine.Engine$b.run(Unknown Source)

正如你在图片中所看到的，无论是大门还是商店，都没有被一些静态的障碍物挡住。问题似乎是乘客之间的问题，因为他们似乎互相阻碍。我试着用更少的乘客，这延误了问题(甚至在我使用非常小的数字时解决了问题)。然而，造成这一问题的乘客人数是现实的(约100人)，GateArea的大小也是如此。

是否有一种方法可以告诉乘客“推”其他代理来创建一条路径或另一种方法来解决问题而不降低数量(从而降低模拟质量)？

带有错误指示的拥挤门

PS。这是我在StackOverflow上的第一个问题，所以请告诉我如何改进这个问题。我希望能获得足够的声誉，在其他AnyLogic问题上得到更多的答案，因为他们不止一次帮助克服了一些僵局。

Answer 1

假设真的没有任何障碍，除了其他行人，那么可以帮助改善你的情况的参数是行人的直径。减少它意味着行人可以彼此靠近。

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您还可以使用ped.setDiameter( X )在模拟的任意点动态更改直径。例如，您可以在特定的时间点将其设置为0，直到行人离开该区域并将其更改为0.5。

经过评论中的讨论，问题似乎不是直径问题。尽管如此，我仍然把它放在上面，因为这可能是一个面临类似问题的人的问题。

真正的问题是，问这个问题的建模者是使用remove(agent)让代理离开行人流程图。一旦使用Enter块将代理发送回流程图，AnyLogic就不再将该代理识别为行人网络中的行人。

因此，不应该使用Enter块，而应该使用pedEnter。后者需要输入行人的外观位置。因为在您的例子中行人并没有真正移动，所以只留下了用于建模的流程图，您可以指定这个位置作为代理的当前位置，如下所示。

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