NetLogo:如果变量值相同，则使代理链接 [英] Netlogo: getting agents to link if variables values are the same

问题描述

我试图获取两种代理(xagents和yagents)来检查变量的值在xagents半径之一内移动时是否相同.然后，他们应该链接.

I am trying to get two breeds of agents (xagents and yagents) to check to see if the value of a variable is the same when they move within one of xagents' radius. Then they should link.

当我尝试下面的代码时，它们会链接，但是当我检查链接的代理的值时，变量值不相等；他们不应该链接.问题的过程在代码的末尾.任何想法为什么会这样?

When I try the code below, they link but when I inspect the values of the linked agents, the variable values are not equal; they should not be linking. The problem procedure is at the end of the code. Any ideas why this is?

当我可以跳过这部分时，我希望代理更改另一个变量的值，但前提是它们的值必须与VAR1相同(因此链接).

When I can move past this part, I want the agents to change the value of another variable, but only if they have the same value as VAR1 (hence the link).

breed [xagents xagent]
breed [yagents yagent]
turtles-own  [var1]

to setup
 clear-all
 resize-world -20 20 -20 20
 setup-patches
 setup-turtles
 reset-ticks
end

to
  setup-patches
  ask patches [set pcolor gray ]
end

to
  setup-turtles
  set-default-shape xagents "circle 3"
create-xagents 10
[
  set color white
  set size 2
  set var1 random-normal 5 1
  setxy random-xcor random-ycor
]
  set-default-shape yagents "circle 3"
  create-yagents 20
  [
    set color blue
    set size 2
    set var1 random-normal 5 1
    setxy random-xcor random-ycor
  ]
end

to go
  move-xagents
  move-yagents
  ask xagents [communicate]
  tick
end

to move-xagents
  ask xagents [
   rt random 50
   lt random 50
 forward 1
  ]
end

to move-yagents
  ask yagents [
   rt random 50
   lt random 50
 forward 1
]
    end
   ;;THIS IS THE PROBLEM 
    to communicate
      ask xagents in-radius 1 with [var1 = [var1] of myself]
      [create-links-with other yagents-here 
        [
         set color white
         set thickness 0.1
        ]
        ]
    end

推荐答案

此处存在一些可能会导致您遇到问题的问题.首先:

There are a few issues here that might be causing you problems. First:

set var1 random-normal 5 1

如果需要进行匹配，则两个代理共享random-normal中的值的可能性极低-它会返回浮点值:

If you need have matches occur, the likelihood that two agents will share the value from random-normal is extremely low- it returns a float value:

observer> show random-normal 5 1
observer: 4.051232264359846

选择另一种方法来选择var1的值(例如random-poisson或one-of [ 1 2 3 4 5 ])，否则将无法获得匹配项.原始代码提供链接的唯一原因是other xagents未包含在to communicate代码块中(请参见下文).

Choose another way to select values for your var1 (eg random-poisson, or one-of [ 1 2 3 4 5 ]) or you will not get matches. The only reason your original code was giving links was because other xagents was not included in your to communicate code block (see below).

   ask xagents in-radius 1 with [var1 = [var1] of myself]

在这里您应该使用other xagents，否则您将包括询问代理，而不仅仅是其他in-radius 1.

Here you should use other xagents or you will include the asking agent, not just the other ones in-radius 1.

      [create-links-with other yagents-here 
        ...

因此，在这里，您已经使用条件选择要构成链接的xagents，但是相同的条件未应用于yagents端.因此，您将获得xagents与任何yagents-here形成链接的功能.要解决此问题，只需确保yagents还必须具有您要使用的var1，例如:

So here, you have already used the conditional to select the xagents that you would like to form a link, but the same conditional is not applied to the yagents side. So, you were getting xagents forming links with any yagents-here. To fix that, just make sure that the yagents must also have the var1 that you're after, something like:

to communicate
  ask other xagents in-radius 3 with [var1 = [var1] of myself]
  [create-links-with yagents in-radius 3 with [var1 = 2 ]
    [
      set color white
      set thickness 0.1
    ]
  ]
end 

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