On Sat, Nov 22, 2014 at 12:42 PM, Duncan Murdoch <murdoch.dun...@gmail.com> wrote: > On 22/11/2014, 2:59 PM, Stuart Ambler wrote: >> A colleague¹s R program behaved differently when I ran it, and we thought >> we traced it probably to different results from string comparisons as >> below, with different R versions. However the platforms also differed. A >> friend ran it on a few machines and found that the comparison behavior >> didn¹t correlate with R version, but rather with platform. >> >> I wonder if you¹ve seen this. If it¹s not some setting I¹m unaware of, >> maybe someone should look into it. Sorry I haven¹t taken the time to read >> the source code myself. > > Looks like a collation order issue. See ?Comparison.
With the oddity that both platforms use what look like similar locales: LC_COLLATE=en_US.UTF-8 LC_COLLATE=en_US.utf8 /Henrik > > Duncan Murdoch > >> Thanks, >> Stuart >> >> R version 3.0.2 (2013-09-25) -- "Frisbee Sailing" >> Platform: x86_64-unknown-linux-gnu (64-bit) >> Sys.getlocale() >> [1] >> "LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF >> -8;LC_MONETARY=en_US.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_ >> NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.UTF-8;LC_IDENTIFICA >> TION=C" >> >> "-1" > "1" >> [1] TRUE >> >> "-1" <"1" >> [1] FALSE >> >> "1" < "-1" >> [1] TRUE >> >> "1" < "-" >> [1] FALSE >> >> Vs. >> >> R version 3.1.1 (2014-07-10) ‹ ³Sock it to Me" >> Platform: x86_64-redhat-linux-gnu (64-bit) >> Sys.getlocale() >> [1] >> "LC_CTYPE=en_US.utf8;LC_NUMERIC=C;LC_TIME=en_US.utf8;LC_COLLATE=en_US.utf8 >> ;LC_MONETARY=en_US.utf8;LC_MESSAGES=en_US.utf8;LC_PAPER=en_US.utf8;LC_NAME >> =C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.utf8;LC_IDENTIFICATION >> =C" >> >> "-1" > "1" >> [1] FALSE >> >> "-1" <"1" >> [1] TRUE >> >> "1" < "-1" >> [1] FALSE >> >> "1" < "-" >> [1] FALSE >> >> ______________________________________________ >> R-devel@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-devel >> > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
