NETLOGO：有没有更好的方法从CSV？ 我一直在Netlogo建立一个ABM，该ABM接收了一堆GIS数据（例如，郊区中心，靠近CBD，购物中心，道路等），并计算了四个代理类别的实用程序（DP = Deplive ...

Question

CSV扩展文档

和
ITSrepo

以获取我的轴承，但我发现最有用的是

我已经为负载重量功能编写了以下代码，但来自我的Python背景，看起来非常效率低下。有什么建议吗？

extensions [ csv ]

globals [ 
  data dp-weight li-weight mi-weight hi-weight 
  dpu-suburb dpu-neigbhour dpu-bu dpu-cbd dpu-mall dpu-markets dpu-road dpu-density dpu-schools dpu-attractive dpu-health dpu-random dpu-water 
  liu-suburb liu-neigbhour liu-bu liu-cbd liu-mall liu-markets liu-road liu-density liu-schools liu-attractive liu-health liu-random liu-water
  miu-suburb miu-neigbhour miu-bu miu-cbd miu-mall miu-markets miu-road miu-density miu-schools miu-attractive miu-health miu-random miu-water
  hiu-suburb hiu-neigbhour hiu-bu hiu-cbd hiu-mall hiu-markets hiu-road hiu-density hiu-schools hiu-attractive hiu-health hiu-random hiu-water
  
  dp-w-list li-w-list mi-w-list hi-w-list
]

to setup
  clear-all
  file-close-all ;; Close any files open from last run
  file-open "../data/interim/weights.csv" ;; a csv formated with a header row and column and integers for the weights
  set [dp-w-list li-w-list mi-w-list hi-w-list] [[][][][]]
  reset-ticks
end

to go
  load-weights 
  show hiu-water
  tick
end
to load-weights 
  ;; code based on https://github.com/NetLogo/models/blob/master/Code%20Examples/Extensions%20Examples/csv/CSV%20Example.nlogo
  file-close-all ;; Close any open files 
  file-open "../data/interim/weights.csv"
  set data csv:from-file "../data/interim/weights.csv"
  set dp-weight item 1 data ;; I skip the first row as it contains only the headers
  set li-weight item 2 data 
  set mi-weight item 3 data 
  set hi-weight item 4 data 
  let i 0
  repeat length dp-weight [
    let w item i dp-weight
    if i > 0 [set dp-w-list lput w dp-w-list] ;; I skip the first column, as it contains the line header (e.g., 'dp')
    set i i + 1
  ]
  set i 0
  repeat length li-weight [
    let w item i li-weight
    if i > 0 [set li-w-list lput w li-w-list]
    set i i + 1
  ]
  set i 0
  repeat length mi-weight [
    let w item i mi-weight
    if i > 0 [set mi-w-list lput w mi-w-list]
    set i i + 1
  ]
  set i 0
  repeat length hi-weight [
    let w item i hi-weight
    if i > 0 [set hi-w-list lput w hi-w-list]
    set i i + 1
  ]
  set [ dpu-suburb dpu-neigbhour dpu-bu dpu-cbd dpu-mall dpu-markets dpu-road dpu-density dpu-schools dpu-attractive dpu-health dpu-random dpu-water ] dp-w-list
  set [ liu-suburb liu-neigbhour liu-bu liu-cbd liu-mall liu-markets liu-road liu-density liu-schools liu-attractive liu-health liu-random liu-water ] li-w-list
  set [ miu-suburb miu-neigbhour miu-bu miu-cbd miu-mall miu-markets miu-road miu-density miu-schools miu-attractive miu-health miu-random miu-water ] mi-w-list
  set [ hiu-suburb hiu-neigbhour hiu-bu hiu-cbd hiu-mall hiu-markets hiu-road hiu-density hiu-schools hiu-attractive hiu-health hiu-random hiu-water ] hi-w-list

  file-close ;; Close any open files 
end

您可以使用Netlogo的列表操纵，并使您的代码更加简洁，效率。 我们可以将权重列表直接分配给全局变量列表。 并使用foreach迭代CSV数据的行和列，消除了对手动索引的需求和重复的foreach
loops。

repeat

Answer 1

是列表的列表，其中每个内部列表包含对应于特定代理类的全局变量。 外部通过

global-lists

（来自CSV的行）和

foreach
同时迭代。 thr Inner
weight-lists

循环通过每个

global-lists

及其相应的

foreach

变量迭代，使用

weight

.

。将权重分配给全局变量。