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Question

如何在所有较高的邻居补丁中随机选择而不是最高邻居补丁？ 我想删除（如果高程＆gt; = [海拔]最大一个邻居[海拔] [停止]） 并在[移动到一个邻居[停止]]

中放置“[停止]”

to move ; a turtle procedure

if elevation >= [elevation] of max-one-of neighbors [elevation] [stop]


ifelse random-float 1 < q
[uphill elevation]
[move-to one-of neighbors]

end

Answer 1

exists?从代理集中随机选择代理，one-of创建满足条件的代理的代理集。您还需要测试至少有一个位置要去。选择看起来像这样（确定阈值条件）：

with

如果您想要在较高的邻居中进行选择，无论他们是否高于某个阈值，您都需要to move-up ; a turtle procedure let candidates neighbors with [elevation >= <thresholdhold condition> ] if any? candidates [ move-to one-of candidates] end 。看起来这样选择3个最高之一：

max-n-of

Answer 2

; The butterfly move procedure in turtle context
to move ; a turtle procedure
  if elevation >= [elevation] of max-one-of neighbors [elevation] [stop]
  ; Decide whether to move uphill deterministically with probability q
  ifelse random-float 1 < q
   [ uphill elevation ] ; move uphill
   [ move-to one-of neighbors ] ; otherwise move randomly
   set patches-visited patches-visited + 1
end