[R] Import R-output into Java

[Maxl18]

Thanks, sink was exactly the function I searched.
It properly works in R, but when I try to launch it from Java, the file is
created but never written any output...

con.voidEval("test.txt");   // file is created
con.voidEval("1+1");        // nothing is written into the file
con.voidEval("sink()");

Where is my mistake?
Cheers, Max





Thomas Roth (geb. Kaliwe) wrote:
> 
> #I used sink
> ?sink
> 
> 
> #Thomas
> 
> 
> 
> Maxl18 schrieb:
>> Hello,
>> I want to import R-output via Rserve to Java, especially for the function
>> ctree from the package party.
>> Rserve is working properly.
>>
>> Yet, I only get the predictions with the Java code
>>
>>    try{
>>        RConnection c = new RConnection();
>>        ...
>>        c.voidEval("modell <- ctree(...)");
>>        REXP y = c.eval("nodes(modell,1)[[1]]$prediction");
>>        ...
>>    }catch(Exception e){}
>>
>> When I try to get the whole text with
>>
>>    REXP z = c.eval("nodes(modell,1)[[1]]");
>>    System.out.println(z);
>>
>> I get something like   
>> org.rosuda.REngine.REXPGenericVector at 119c082+[10]named
>>
>> But I want the text which is printed in R.
>>
>> What can I do?
>> Thanks, Max
>>
>>
>> Once again:
>> It`s clear to get the result in R but I don`t know hoe to get the
>> R-output
>> into Java (or into a file, i.e. .txt)
>>
> 
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> 
> 

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