From kapelner at stanford.edu  Thu Jul 13 23:28:48 2006
From: kapelner at stanford.edu (Adam Kapelner)
Date: Thu, 13 Jul 2006 14:28:48 -0700
Subject: [Rd] Call R function from Java
In-Reply-To: <ADC02CC0-5BDF-4C5C-89C1-2CB9570CCBB8@r-project.org>
Message-ID: <000001c6a6c3$53ebbe70$0100a8c0@kapelnerquad>

Hey guys,

It worked. All I had to do is set PATH = < R directory > in my system
variables in "My Computer" and that was it!

Oh btw Simon, I couldn't find the run.bat in the JRI_0.2-4.tar.gz file. I
found a "run.in" but that is a unix bash script.

Another question:

When I'm evaluating R expressions:
	REXP
rexp3=r.eval("cancer=read.table(\"CancerCellsTrainingFile.txt\",header=TRUE,
sep=\",\")");
	System.out.println(rexp3);

I sometimes get back form the println:
	RXP[unknown/19, id=1208787616, o=null]

Is there anyway to actually view that output as a string? I know it's not a
graphical object. It's probably a type of error message.

I'm running Windows XP, 1GB RAM, 2 x 1.8GHZ Xeon P4's, Eclipse 3.1.1,
jdk1.5.0_07, and jre1.5.0_06

Thanks,
Adam

-----Original Message-----
From: Simon Urbanek [mailto:simon.urbanek at r-project.org] 
Sent: Thursday, July 13, 2006 11:17 AM
To: way4thesub
Subject: Re: [Rd] Call R function from Java

Adam,

On Jul 12, 2006, at 10:42 PM, way4thesub wrote:

> I am unsure how to actually import JRI into eclipse.

I don't know either, but I'd recommend using the run.bat start script  
supplied with JRI. I bet Brian's guess is correct.


> I'm sorry this is such an easy question but with the lack of FAQ's  
> and examples of JRI, I'm forced to ask it.
>

There are examples in JRI (in the "examples" directory) and JGR is  
probably the best example of the general use of JRI. At your  
suggestion I have now added a FAQ.

Cheers,
Simon



[Rd] Call R function from Java
Adam Kapelner