Rcaller executing a function from .R file

Question

I am trying to execute a R file from java, here is the code i have tried.

RCaller caller = new RCaller();
RCode code = new RCode();  
caller.setRscriptExecutable("D:\\R\\R-3.0.2\\bin\\Rscript.exe");    
code.clear();
caller.setRCode(code);
code.R_source("D:\\Data\\Workspace\\Cpackage\\try.R");
caller.setRCode(code);
caller.runOnly();

try.R file

myinput<-function(){
//loading a csv file,reading it and creating an excel file(Working when it is run from r directly)
}

myinput()

The above rcaller java code does not do anything.Please help if i am doing anything wrong,i need to do this very badly. If there is anyother way to achieve this please suggest!

Answer 1

RCaller does not change the Java path format that is given in

code.R_source("D:\\Data\\Workspace\\Cpackage\\try.R");

to R format. This produces a R code like

source("D:\\Data\\Workspace\\Cpackage\\try.R")

so you need to change it to

code.R_source("D:/Data/Workspace/Cpackage/try.R");

It is good to have a look at the source code at Rcaller source , it can be seen that

public void R_source(String sourceFile) {
    addRCode("source(\"" + sourceFile + "\")\n");
}

defines the function with literally given R file as an R string.