在java-Rcaller中調用R

Question

我想通過使用R調用方法來實現在java中使用R的集羣。我想爲集羣驗證運行示例代碼和我得到大多數用戶所面臨的常見錯誤：文件

package test; 
     import rcaller.RCaller; 
     import java.io.File; 
     import java.lang.*; 
     import java.util.*; 
     import java.awt.image.DataBuffer; 

     public class test3 { 
      public static void main(String[] args) { 
       new test3(); 
      } 
      public test3() 
      { 

       try{ 

        RCaller caller = new RCaller(); 


        caller.cleanRCode(); 

        caller.setRscriptExecutable("C:/Program Files/R/R-2.15.1/bin/x64/Rscript"); 
         caller.cleanRCode(); 

      caller.addRCode("library(clvalid)"); 
      caller.addRCode("data(mouse)"); 
      caller.addRCode("express <- mouse [,c(M1,M2,M3,NC1,NC2,NC3)]"); 
      caller.addRCode("rownames (express) <- mouse$ID "); 
      caller.addRCode("intern <- clValid(express, 2:6 , clMethods = c(hierarchical,kmeans,diana,clara,model) ,validation = internal)"); 
      caller.addRCode("b <- summary(intern) "); 
      caller.runAndReturnResult("b"); 
       } 

       catch (Exception e){ 
        e.printStackTrace(); 
       } 
      } 
     } 

Answer 1

你必須在你的代碼一些拼寫錯誤，過早結束。像clValid不clvalid，和你錯過許多引號，如「分級」，...

我覺得這是更好地把你的代碼的腳本，並調用它從Java這樣的：

Runtime.getRuntime().exec("Rscript myScript.R"); 

其中myScript.R是：

library(clValid) 
data(mouse) 
express <- mouse [,c('M1','M2','M3','NC1','NC2','NC3')] 
rownames (express) <- mouse$ID 
intern <- clValid(express, 2:6 , clMethods = c('hierarchical','kmeans', 
               'diana','clara','model') , 
               validation = 'internal') 
b <- summary(intern)