使用Eclipse和Rserve从Java调用R的简单程序 [英] Simple program to call R from Java using Eclipse and Rserve

问题描述

我的应用程序必须执行R操作，例如：

  m = matrix（sample（0：1,100，rep = T） ，ncol = 10）
  

结果应该适用于Java应用程序。

Rserve包将R与其他语言联系起来，因为它行为作为TCP / IP服务器。我已经阅读了该网站，但不知道如何使用可以使用Rserve的最简单的应用程序。

需要使用哪些步骤来创建使用Rserve的简单Eclipse应用程序从Java执行R命令？

解决方案

下载部分有一个二进制版本的Rserve（www.rforge.net/ Rserve / files /我有版本R 2.13和Windows xp，所以我需要下载Windows二进制：Rserve_0.6-8.zip（541.3kb，更新：Wed Apr 18 07:00:45 2012））。将文件复制到包含R.DLL的目录。从CRAN安装Rserve

  install.packages（Rserve）
  

在R（我有RStudio - 方便的事情：下载RStudio IDE ）。
启动Rserve来自R内部，只需键入

 库（Rserve）
 Rserve（）
  

在任务管理器中检查 - Rserve.exe应该运行。
在Eclipse中创建Java项目之后，在该项目下创建一个名为lib的目录。将
2 jar粘贴到RserveEngine.jar和REngine.jar（www.rforge.net/Rserve/files/）上。不要忘记在属性中将这个jar添加到你的java项目中。在新的类代码中：

  import org.rosuda.REngine。*; 
 import org.rosuda.REngine.Rserve。*; 
 
 public class rserveuseClass {
 public static void main（String [] args）throws RserveException {
 try {
 RConnection c = new RConnection（）; // make默认端口（6311）的新本地连接
 double d [] = c.eval（rnorm（10））。asDoubles（）; 
 org.rosuda.REngine.REXP x0 = c.eval（R.version.string）; 
 System.out.println（x0.asString（））; 
} catch（REngineException e）{
 // manipulation 
} 
 
} 
} 
  pre> 
My application must perform R operations such as:
m = matrix(sample(0:1,100, rep=T),ncol=10)
The results should be available to a Java application.

The Rserve package bridges R to other languages, since it acts as a TCP/IP server. I've read the website but don't know how to make the simplest application that can use Rserve.

What steps are required to make a simple Eclipse application that uses Rserve to execute R commands from Java?
解决方案
There is a binary version of Rserve in the download section (www.rforge.net/Rserve/files/ I have version R 2.13 and Windows xp, so I need download Windows binary: Rserve_0.6-8.zip (541.3kb, updated: Wed Apr 18 07:00:45 2012)). Copy the file to the directory containing R.DLL. After installed Rserve from CRAN
install.packages("Rserve")
in R (I have RStudio - convenient thing: Download RStudio IDE). 
started Rserve is from within R, just type
library(Rserve)
Rserve()
Сheck in Task Manager - Rserve.exe should be run.
After make a Java project in Eclipse, make a directory called lib under that project. Paste
2 jar here RserveEngine.jar and REngine.jar (www.rforge.net/Rserve/files/). Do not forget to add this jars in Properties your java-project. In new class code:
import org.rosuda.REngine.*;
import org.rosuda.REngine.Rserve.*;

public class rserveuseClass {
    public static void main(String[] args) throws RserveException {
        try {
            RConnection c = new RConnection();// make a new local connection on default port (6311)
            double d[] = c.eval("rnorm(10)").asDoubles();
            org.rosuda.REngine.REXP x0 = c.eval("R.version.string");
            System.out.println(x0.asString());
} catch (REngineException e) {
            //manipulation
        }       

    }
}


                        
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