[R] rJava works with 32-bit but not 64

[Milan Bouchet-Valat]

Le lundi 04 février 2013 à 08:19 -0400, Simon Urbanek a écrit :
> On Feb 4, 2013, at 6:33 AM, Spencer Graves wrote:
> 
> > On 2/3/2013 11:21 PM, Pascal Oettli wrote:
> >> Hello,
> >> 
> >> Do you have a 64-bit version of Java?
> >> 
> >> rJava says to you:
> >> call: stop("No CurrentVersion entry in '", key, "'! Try
> re-installing Java and make sure R and Java have matching
> architectures.")
Simon, have you noticed there seem to be a bug in rJava about the
missing 'key' variable? The error message would be (slightly) cleaner if
the stop() call succeeded, wouldn't it? ;-)


Thanks for your work

> >      I think I probably have a 32-bit version and not a 64-bit,
> because it works with 32-bit R but not 64-bit R.
> > 
> > 
> >      Is it feasible to have both installed in a way that allows the
> each version of R to select its own version of Java?
> 
> Yes, that is the default. 32-bit R will only see 32-bit Java and vice
> versa, because Windows separates 32-bit and 64-bit registries.
> 
> 
> >  A comment on stackoverflow suggests that may not be easy
> (http://stackoverflow.com/questions/5272216/is-it-possible-to-install-both-32bit-and-64bit-java-on-windows-7). 
> > 
> 
> Ehm, it says "Yes, it is absolutely no problem. " -- which part of it
> suggests it's not easy? SO is a good source of rumors, seldom facts --
> but in this case it's not too far from the truth.
> 
> Cheers,
> Simon
> 
> 
> > 
> >      Thanks,
> >      Spencer
> > 
> >> 
> >> Regards,
> >> Pascal
> >> 
> >> 
> >> Le 04/02/2013 14:27, Spencer Graves a écrit :
> >>> Hello:
> >>> 
> >>> 
> >>>       rJava works for me under 32-bit but under not 64-bit R; see below.
> >>> 
> >>> 
> >>>       Suggestions?
> >>>       Thanks,
> >>>       Spencer
> >>> 
> >>> 
> >>> > library(rJava)
> >>> Error : .onLoad failed in loadNamespace() for 'rJava', details:
> >>>   call: stop("No CurrentVersion entry in '", key, "'! Try
> re-installing
> >>> Java and make sure R and Java have matching architectures.")
> >>>   error: object 'key' not found
> >>> Error: package/namespace load failed for 'rJava'
> >>> > sessionInfo()
> >>> R version 2.15.2 (2012-10-26)
> >>> Platform: x86_64-w64-mingw32/x64 (64-bit)
> >>> 
> >>> locale:
> >>> [1] LC_COLLATE=English_United States.1252
> >>> [2] LC_CTYPE=English_United States.1252
> >>> [3] LC_MONETARY=English_United States.1252
> >>> [4] LC_NUMERIC=C
> >>> [5] LC_TIME=English_United States.1252
> >>> 
> >>> attached base packages:
> >>> [1] stats     graphics  grDevices utils     datasets  methods base
> >>> >
> >>> 
> >>> ##########################
> >>> 
> >>> 
> >>> > library(rJava)
> >>> > sessionInfo()
> >>> R version 2.15.2 (2012-10-26)
> >>> Platform: i386-w64-mingw32/i386 (32-bit)
> >>> 
> >>> locale:
> >>> [1] LC_COLLATE=English_United States.1252
> >>> [2] LC_CTYPE=English_United States.1252
> >>> [3] LC_MONETARY=English_United States.1252
> >>> [4] LC_NUMERIC=C
> >>> [5] LC_TIME=English_United States.1252
> >>> 
> >>> attached base packages:
> >>> [1] stats     graphics  grDevices utils     datasets  methods base
> >>> 
> >>> other attached packages:
> >>> [1] rJava_0.9-3
> >>> 
> >>> 
> > 
> > 
> > -- 
> > Spencer Graves, PE, PhD
> > President and Chief Technology Officer
> > Structure Inspection and Monitoring, Inc.
> > 751 Emerson Ct.
> > San José, CA 95126
> > ph:  408-655-4567
> > web:  www.structuremonitoring.com
> > 
> > 
> 
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