如何从列表中只选择一个要运行的项目？-解网

问：

我正在研究一个模型来模拟开发模型。现在，我的代码中返回了一个棘手的问题：

to develop
grow-population
ask patches with [pcolor = grey][ask neighbors [set potential (potential + one-of [1 -1])]]
ask patches [ set new-potential (potential + sum [potential] of neighbors4) / 5 + one-of [1 -1] ]
ask patches [ set potential new-potential
              set development_patch patches with
                  [potential > threshold and urban? = 0 and fitness = 1 and population > 5]
             if any? development_patch 
                [let selected_patch one-of development_patch
                 ask selected_patch [set urban? 1
                                     set land-use "Urban"
                                     set pcolor blue  
                                    ]
               ]
            ]

tick
end

我随机选择了一个项目来运行，但结果显示它运行了一堆项目。那么，我应该如何让其中一个补丁（selected_patch）在每个刻度中改变颜色？谢谢。

Netlogo 补丁

ask patches [ 
   set potential new-potential
   set development_patch patches with [potential > threshold and urban? = 0 and fitness = 1 and population > 5]
]

if any? development_patch [
     let selected_patch one-of development_patch
     ask selected_patch [
          set urban? 1
          set land-use "Urban"
          set pcolor blue  
     ]
]

嗨，Leirs，我想设置一个排序 paches 的首选顺序，在上面之前添加新代码，如下所示： ask patches with [pcolor = grey][ask neighbors [set neighbors [set potential （potential + one-of [1 -1]）]] ask patches [ set new-potential （potential + sum [potential] of neighbors4） / 5 + one-of [1 -1] ] .因此，有了这个，“潜力”现在有一个顺序，如果 neighbor4 中有一个灰色的 pcolor，这意味着这是首选项，并且潜在值会更高。我的目的是先用蓝色填充 pcolor，如果它与灰色相邻，然后是其他颜色。你能帮我怎么做吗？

0赞 LeirsW 11/7/2023

我不完全确定你在这里的目标是什么。您想将多个补丁染成蓝色吗？

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如何从列表中只选择一个要运行的项目？

How to choose only one of the item to run from a list?

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