Hi, Thanks for you help. I use R-devel under Ubuntu 14.04, here is the output of sessionInfo():
> sessionInfo() R Under development (unstable) (2014-06-02 r65832) Platform: x86_64-unknown-linux-gnu (64-bit) locale: [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C [3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 [5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 [7] LC_PAPER=en_US.UTF-8 LC_NAME=C [9] LC_ADDRESS=C LC_TELEPHONE=C [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C attached base packages: [1] stats graphics grDevices utils datasets methods base loaded via a namespace (and not attached): [1] compiler_3.2.0 tools_3.2.0 I assume ICU was not found/installed when R was installed as executing the first couple of lines of the examples section of ?icuSetCollate leads to: Warning message: In icuSetCollate(case_first = "upper") : ICU is not supported on this build [1] "aarhus" "Aarhus" "safe" "test" "Zoo" Since only the (default) locale "C" gives the order I expected, I consider changing my ~/.Rprofile. But it certainly had a reason why I changed it to "en_US.UTF-8" at some point... hope that does not break anything else. Is there any "recommendation" what to use in ~/.Rprofile (the default?)? And is the 'recommended approach' to have ICU installed and change the sorting order via icuSetCollate if necessary? I would have not expected any influence of the locale on the sorting order, that's quite good to know. In fact, the example came up after I tried to sort students' grades in a class with several students having the same last name (which I made unique by adding the first names with a '.' separator)... quite a 'delicate' issue... Cheers, Marius ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
