[R] calling R from within Java, using jri

From: <john.gavin_at_ubs.com>
Date: Thu 28 Sep 2006 - 11:42:25 GMT


I want to call R from within Java, using jri as per http://www.rosuda.org/software/jri/
So I am following the instructions in the README file for JRI 0.2-4.

I have run 'sh configure.win' and 'make' and they seemed to be successful.
(See below for the output from make, for example.) But when I try 'run.bat rtest' (with and without R command line arguments)
the output that I get is

'c:\temp\r\jri>C:/PROGRA~1/Java/JDK15~1.0_0/bin/java -cp .;examples;src/JRI.jar rtest $*
Creating Rengine (with arguments)'

That suggests that it gets to line 60 in rtest.java then stops on line 61,
without producing an error. Line 61 is

Rengine re=new Rengine(args, false, null);

so it seems that I am not able to construct an Rengine. Can someone suggest what I might try next to track down the problem, please?

I am running Java JDK 1.5.0 and R 2.3.1 on Windows NT.



John Gavin <john.gavin@ubs.com>,
Commodities, FIRC,
UBS Investment Bank, 2nd floor,
100 Liverpool St., London EC2M 2RH, UK.
Phone +44 (0) 207 567 4289

make -C src JRI.jar
make[1]: Entering directory `/cygdrive/c/temp/r/jri/src' gcc -c -o Rengine.o Rengine.c -DWin32 -D_JNI_IMPLEMENTATION_
-IC:/PROGRA~1/Java/JDK15~1.0_0/include/win32 -IC:/etc/R/R-2.3.1/include
gcc -c -o jri.o jri.c -DWin32 -D_JNI_IMPLEMENTATION_
-IC:/PROGRA~1/Java/JDK15~1.0_0/include/win32 -IC:/etc/R/R-2.3.1/include
gcc -c -o Rcallbacks.o Rcallbacks.c -DWin32 -D_JNI_IMPLEMENTATION_
-IC:/PROGRA~1/Java/JDK15~1.0_0/include/win32 -IC:/etc/R/R-2.3.1/include
gcc -c -o Rinit.o Rinit.c -DWin32 -D_JNI_IMPLEMENTATION_

Rinit.c: In function `initR':
Rinit.c:265: warning: assignment from incompatible pointer type gcc -c -o globals.o globals.c -DWin32 -D_JNI_IMPLEMENTATION_
gcc -o jri.dll Rengine.o jri.o Rcallbacks.o Rinit.o globals.o win32/libjvm.dll.a -shared -Lwin32 -ljvm
-LC:/etc/R/R-2.3.1/src/gnuwin32 -LC:/etc/R/R-2.3.1/bin -lR -Wl,--kill-at

Info: resolving _R_CStackLimit by linking to __imp__R_CStackLimit (auto-import)

C:/PROGRA~1/Java/JDK15~1.0_0/bin/javac -d . ../Mutex.java ../REXP.java
../RMainLoopCallbacks.java ../Rengine.java 
C:/PROGRA~1/Java/JDK15~1.0_0/bin/jar fc JRI.jar org jri.dll 
make[1]: Leaving directory `/cygdrive/c/temp/r/jri/src' rm -f jri.dll
cp src/jri.dll jri.dll
C:/PROGRA~1/Java/JDK15~1.0_0/bin/javac -classpath src/JRI.jar -d examples examples/rtest.java
Note: examples/rtest.java uses or overrides a deprecated API. Note: Recompile with -Xlint:deprecation for details. C:/PROGRA~1/Java/JDK15~1.0_0/bin/javac -classpath src/JRI.jar -d examples examples/rtest2.java
Note: examples/rtest2.java uses or overrides a deprecated API. Note: Recompile with -Xlint:deprecation for details. echo "set PATH=%PATH%;C:/etc/R/R-2.3.1\\bin;C:/etc/R/R-2.3.1\\lib" > run.bat
echo "C:/PROGRA~1/Java/JDK15~1.0_0/bin/java -cp .;examples;src/JRI.jar rtest \$*" >> run.bat
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