On 24/01/2009 3:56 PM, Dieter Menne wrote:
Duncan Murdoch <murdoch <at> stats.uwo.ca> writes:
shell("set JAVA_HOME")
JAVA_HOME=C:\Program Files\Java\jre6
That doesn't last beyond the shell call, as far as I know. It starts a
process to run the shell, sets the environment variable in that process,
then the process dies and the setting dies with it. If you want a
permanent setting, you should set it in the Rgui process, via Sys.setenv().
Trying again (after reading your private email): I tried to start
libary(rJava) after each of the following line, and the result
was always the same.
I don't know what's going wrong on your system. I added a browser()
call to the .onLoad function in R/windows/FirstLib.R on my system, and I
see it successfully gets JAVA_HOME from the registry. It gets a number
of other files, then adds these paths to my PATH variable. I've used
strsplit() to separate them for viewing.
[14] "C:\\Program Files\\Java\\jre1.6.0_07\\bin\\client"
[15] "C:\\Program Files\\Java\\jre1.6.0_07/bin"
[16] "C:\\Program Files\\Java\\jre1.6.0_07/bin/client"
[17] "C:\\Program Files\\Java\\jre1.6.0_07/jre/bin/client"
I believe LoadLibrary needs paths to be specified with backslashes, so
you might be able to fix things on your system by changing the file.path
calls in that function to use fsep="\\" instead of the default "/".
Duncan Murdoch
Dieter
shell("where jvm.dll")
#C:\Program Files\Java\jre6\bin\client\jvm.dll
Sys.getenv("JAVA_HOME")
# JAVA_HOME
#"C:/Program Files/Java/jre6/bin"
Sys.setenv(JAVA_HOME="C:/Program Files/Java/jre6")
Sys.setenv(JAVA_HOME="C:/Program Files/Java/jre6/bin")
Sys.setenv(JAVA_HOME="C:\\PROGRA~1\\Java\\jre6")
Sys.unsetenv("JAVA_HOME")
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and provide commented, minimal, self-contained, reproducible code.
