[R] Getting JRI/rJava to work

From: john seers (IFR) <john.seers_at_bbsrc.ac.uk>
Date: Fri, 16 May 2008 10:55:50 +0100

Hello All

I am trying to get the JRI examples from rJava to work on Windows XP and failing. (And as a more general and connected question is there any review/summary of front-end software for R?)

I have installed rJava from the Windows binary supplied. I compile and run the example supplied (rtest.java) and get the results below. I do not think the notes about a deprecated API are a problem. But I do not know what causes the unsupported conversion messages.

Versions used etc below.

Any ideas please? Thanks for any help.

Regards

John Seers

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C:\temp\JRI\examples>javac -cp "C:/Program Files/R/mylibrary/rJava/jri/JRI.jar" rtest.java Note: rtest.java uses or overrides a deprecated API. Note: Recompile with -Xlint:deprecation for details.

C:\temp\JRI\examples>java -Djava.library.path="C:/Program Files/R/mylibrary/rJava/jri" -cp .;"C:/Program Files/R/mylibrary/rJava/jri/JRI.jar" rtest Creating Rengine (with arguments)
Error in structure(.Internal(Sys.getenv(as.character(x), as.character(unset))), :
  unsupported conversion

R version 2.7.0 (2008-04-22)
Copyright (C) 2008 The R Foundation for Statistical Computing ISBN 3-900051-07-0 R is free software and comes with ABSOLUTELY NO WARRANTY. You are welcome to redistribute it under certain conditions. Type 'license()' or 'licence()' for distribution details.

  Natural language support but running in an English locale

R is a collaborative project with many contributors. Type 'contributors()' for more information and 'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or 'help.start()' for an HTML browser interface to help. Type 'q()' to quit R.

Error in file.info(lib.loc) : unsupported conversion in 'filenameToWchar'
Error in file.exists(name) : unsupported conversion in 'filenameToWchar' rShowMessage "Fatal error: unable to restore saved data in .RData

"

C:\temp\JRI\examples>

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C:\temp\JRI\examples>which java
/cygdrive/c/Program Files/Java/jdk1.6.0_06/bin/java

C:\temp\JRI\examples>which javac
/cygdrive/c/Program Files/Java/jdk1.6.0_06/bin/javac

C:\temp\JRI\examples>

> sessionInfo()

R version 2.7.0 (2008-04-22)
i386-pc-mingw32

locale:
LC_COLLATE=English_United Kingdom.1252;LC_CTYPE=English_United Kingdom.1252;LC_MONETARY=English_United
Kingdom.1252;LC_NUMERIC=C;LC_TIME=English_United Kingdom.1252

attached base packages:
[1] stats graphics grDevices datasets utils methods base

other attached packages:
[1] rJava_0.5-1 RWinEdt_1.8-0
>

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Received on Fri 16 May 2008 - 09:59:55 GMT

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