小编nig*_*s21的帖子

我下载了修改后的随机集群代码，用于使用 NetLogo 建模共享中修改后的随机集群方法的 Millington 版本生成中性景观模型。当我单击“generate-landscape”按钮时，代码中的“fill-landscape”过程会导致“Nothing named ? has been defined”错误。

当我创建附加的界面图像并尝试运行下面的相邻代码时。该问题似乎与“发生次数”报告功能中的问号有关。reduce 函数未按预期工作。有解决办法吗？查看界面，然后代码如下：

  ifelse ( any? neighbours with [ cluster != nobody ] )  ;; check if there are any assigned patches in neighbourhood
  [

    let covers []

    ask neighbours with [ cluster != nobody ]
    [
      set covers fput cover covers    ;;ask neighbours to add their covers to the list
    ]

    let unique-covers remove-duplicates covers    ;;create a list of unique covers

    let max-cover-count -1                 ;the number of neighbours with the …

假设您有以下代码（由 @Nicolas-Payette 提供），您将如何在 netlog 中使用 dbscan 查找平均簇间距离：

extensions [ dbscan ]

to setup
  clear-all
  ask patches [ set pcolor white ]
  create-turtles 1000 [
    set color black
    set label-color blue
    setxy random-xcor random-ycor
  ]
  ask n-of 5 turtles [
    ask turtles in-radius 3 [
      set color one-of [red grey]
    ]
  ]
end

to find-clusters
  let red-grey-turtles turtles with [ member? color [red grey] ]
  let clusters dbscan:cluster-by-location red-grey-turtles 3 3
  (foreach clusters range length clusters [ [c i] ->
    foreach …