r - 我想使用 RNetLogo 包从 NetLogo 中提取坐标数据

Question

如果有人熟悉，我将使用示例 Flocking 代码作为示例来玩

NLCommand("set population 1")
NLCommand("setup")
nruns <- 10
timedata <- list()
for(i in 1:nruns) {
NLCommand("go")
timedata[[i]] <- NLGetAgentSet(c("who","xcor","ycor"),"turtles",
as.data.frame=T,df.col.names=c("who","xcor","ycor")) }
timedata

问题在于它会为每个模型迭代生成新的 header 。所以我得到以下而不是标题只出现一次:

[[1]]
 who     xcor      ycor
1   0 34.56833 -26.47777

[[2]]
 who     xcor      ycor
1   0 35.19765 -25.70063

任何帮助将不胜感激

Answer 1

在 http://groups.yahoo.com/neo/groups/netlogo-users/conversations/topics/15551 上有很好的讨论和答案(OP问了同样的问题)。 NetLogo 的 R 扩展的作者 Jan Thiele 写道:

If you really want to have all turtle coordinates in R, the more appropriate function is NLGetAgentSet and executing this in a loop over the ticks. I have written a tutorial which comes with the RNetLogo package (see your RNetLogo installation directory). There is an example in chapter 11.5 (Time sliding visualization), where a similar thing is done. Adapting it to the Flocking model it could look like this: [...]