Question

当我尝试使用NLStart（）函数从R启动RNetLogo时。我收到有关java的消息，GUI无法打开。我使用的是64位的MacOsX 10.9.5，NetLogo 5.1.0和R 3.1.1。

> library(rJava)
> library(RNetLogo)
> nl.path <- "/Applications/NetLogo\ 5.1.0/NetLogo\ 5.1.0.app"
> NLStart(nl.path, nl.version=5, gui=FALSE)

java.lang.NoClassDefFoundError: org/nlogo/workspace/Controllable
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:249)
Caused by: java.lang.ClassNotFoundException
    at RJavaClassLoader.findClass(RJavaClassLoader.java:383)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
    ... 2 more

之后我尝试使用“JGR and Deducer and deducer extras”。代码和错误是：

> install.packages(c("JGR","Deducer","DeducerExtras”))
> Sys.setenv(NOAWT=1)
> library(JGR)
> Sys.unsetenv("NOAWT")
> JGR()

启动JGR时，代码为：

Loading required package: JGR
Loading required package: rJava
Loading required package: JavaGD
Loading required package: iplots
starting httpd help server ... done
Loading required package: RNetLogo
Loading required package: DeducerExtras
Loading required package: Deducer
Loading required package: ggplot2
Use suppressPackageStartupMessages to eliminate package startup messages.
Loading required package: car
Loading required package: MASS
Attaching package: ‘Deducer’
Loading required package: irr
Loading required package: lpSolve

> nl.path<-"/users/Pabolo/Applications/NetLogo\ 5.1.0/NetLogo.jar"
> NLStart(nl.path)
Error on setwd(nl.path) : you can not change the working directory.

使用nl.path作为app dir的路径。有一些错误。我在JGR（）上运行所有这些。

> nl.path<-"/Applications/NetLogo\ 5.1.0"
> NLStart(nl.path)
Warning: ch.randelshofer.quaqua.util.OSXPreferences failed to load /Users/Pabolo/Library/Preferences/.GlobalPreferences.plist
java.io.IOException: parseReal: unsupported byte count:128
    at ch.randelshofer.quaqua.util.BinaryPListParser.parseReal(BinaryPListParser.java:703)
    at ch.randelshofer.quaqua.util.BinaryPListParser.parseObjectTable(BinaryPListParser.java:424)
    at ch.randelshofer.quaqua.util.BinaryPListParser.parse(BinaryPListParser.java:315)
    at ch.randelshofer.quaqua.osx.OSXPreferences.readPList(OSXPreferences.java:176)
    at ch.randelshofer.quaqua.osx.OSXPreferences.updateCache(OSXPreferences.java:99)
    at ch.randelshofer.quaqua.osx.OSXPreferences.ensureCached(OSXPreferences.java:90)
    at ch.randelshofer.quaqua.osx.OSXPreferences.get(OSXPreferences.java:79)
    at ch.randelshofer.quaqua.osx.OSXPreferences.getString(OSXPreferences.java:45)
    at ch.randelshofer.quaqua.BasicQuaquaLookAndFeel.initSystemColorDefaults(BasicQuaquaLookAndFeel.java:151)
    at ch.randelshofer.quaqua.leopard.Quaqua15LeopardLookAndFeel.initSystemColorDefaults(Quaqua15LeopardLookAndFeel.java:208)
    at ch.randelshofer.quaqua.BasicQuaquaLookAndFeel.getDefaults(BasicQuaquaLookAndFeel.java:76)
    at javax.swing.UIManager.setLookAndFeel(UIManager.java:520)
    at javax.swing.UIManager.setLookAndFeel(UIManager.java:564)
    at org.nlogo.swing.Utils.setSystemLookAndFeel(Utils.java:41)
    at org.nlogo.app.App.<init>(App.scala:302)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at org.picocontainer.injectors.AbstractInjector.newInstance(AbstractInjector.java:147)
    at org.picocontainer.injectors.ConstructorInjector$1.run(ConstructorInjector.java:332)
    at org.picocontainer.injectors.AbstractInjector$ThreadLocalCyclicDependencyGuard.observe(AbstractInjector.java:272)
    at org.picocontainer.injectors.ConstructorInjector.getComponentInstance(ConstructorInjector.java:354)
    at org.picocontainer.injectors.AbstractInjectionFactory$LifecycleAdapter.getComponentInstance(AbstractInjectionFactory.java:56)
    at org.picocontainer.behaviors.AbstractBehavior.getComponentInstance(AbstractBehavior.java:64)
    at org.picocontainer.behaviors.Stored.getComponentInstance(Stored.java:91)
    at org.picocontainer.DefaultPicoContainer.getInstance(DefaultPicoContainer.java:692)
    at org.picocontainer.DefaultPicoContainer.getComponent(DefaultPicoContainer.java:646)
    at org.picocontainer.DefaultPicoContainer.getComponent(DefaultPicoContainer.java:671)
    at org.nlogo.app.App$.main(App.scala:140)
    at org.nlogo.app.App.main(App.scala)
    at nlcon.NLink_v5.<init>(NLink_v5.java:96)
    at org.rosuda.JRI.Rengine.rniRunMainLoop(Native Method)
    at org.rosuda.JRI.Rengine.run(Rengine.java:640)
unable to find translation for: edit.viewSettings.2D.frameRate in GUI_Strings for locale: es
unable to find translation for: edit.viewSettings.2D.frameRate.info in GUI_Strings for locale: es
>

Answer 1

您必须将路径更改为：nl.path <- "/Applications/NetLogo 5.3/app"。

他们更改了目录结构，以便netlogo jar文件现在位于“app”子目录中。

来源：https://stackoverflow.com/a/34837036/468305

希望有所帮助，它对我有用。

Answer 2

它说你不能改变你的工作目录。也许开始一个新的会话。您的反斜杠之一也走错了路。

要找到您的 NetLogo 路径，请尝试 def my_function(list_1: list = ['apple','orange','nuts','fruits','things']): pass，然后导航到 NetLogo Jar 文件。然后当您打开文件路径时，将显示在 R studios 控制台中。将文件路径复制到 NLStart 命令中，该命令应如下所示。

file.choose()

最后，确保您的 Java、NetLogo 和 R 都在 64 位（适用于我）或 32 位上运行，但尽量不要混合使用。最后尝试直接从 R GUI 而不是 RStudio 运行代码。这对我第一次用 R 打开 Netlogo 很有帮助。

我有一个 youtube 视频 (https://www.youtube.com/watch?v=zWMdaTEPTOc)，解释了如何从 R 打开 NetLogo，我的所有功能代码（2021 年 8 月）都可以在 here 中找到。

RNetLogo适用于R3.1.1.0？

2 个答案: