The crucial thing is probably:
"... they are translated to UTF-8 before comparison."
Although the first 127 characters seem to be identical to ASCII, in
which punctuation marks sorted before digits or letters, the encoding
to UTF-8 may make that impractical.
Jim
On Thu, Oct 13, 2016 at 8:55 PM, Bob O'Hara <rni....@gmail.com> wrote:
> Yes, thanks. That seems to be it:
>
> thing <- c("M1", "M2", "M.1", "M.2")
>> sort(thing)
> [1] "M1" "M.1" "M2" "M.2"
>
> The only documentation I can find is from ?Comparison:
> "Collation of non-letters (spaces, punctuation signs, hyphens,
> fractions and so on) is even more problematic."
>
> Indeed.
>
> Bob
>
> On 13 October 2016 at 11:26, PIKAL Petr <petr.pi...@precheza.cz> wrote:
>> Hi
>>
>> Just a wild guess. Dot is ignored and the output is alphabetically sorted.
>>
>> You could try sort it yourself by
>>
>> sort(ls())
>>
>> Cheers
>> Petr
>>
>>> -----Original Message-----
>>> From: R-help [mailto:r-help-boun...@r-project.org] On Behalf Of Bob
>>> O'Hara
>>> Sent: Thursday, October 13, 2016 10:29 AM
>>> To: r-help <r-help@r-project.org>
>>> Subject: [R] (no subject)
>>>
>>> I've just come across an odd problem with sorting in ls(): it doesn't seem
>>> to
>>> order the object names correctly. If I do the following, the order isn't
>>> what I
>>> expect:
>>>
>>> > ls(sorted=TRUE)
>>> [1] "AridData" "AridDataToBUGS" "Arid.df"
>>> "Arid.hpd" "AridPrecip.sd" "Break.df"
>>> [7] "Break.hpd" "Cols" "Data"
>>> "DataFrames" "DataToBUGS" "DataToBUGS.nonlog"
>>> [13] "FitBRugs" "Fixed.df" "Fixed.hpd"
>>> "FormatData" "GetCol" "GetHPD"
>>> [19] "GetMCMC" "GetRow" "HPDIs"
>>> "Int.alpha12" "Int.alpha21" "ModisData"
>>> [25] "ModisDataToBUGS" "Modis.df" "ModisFixed.df"
>>> "ModisFixed.hpd" "Modis.hpd" "ModisPrecip.sd"
>>> [31] "ModisShrink.df" "ModisShrink.hpd" "ModisYears"
>>> "OrigData" "OrigDataToBUGS" "Orig.df"
>>> [37] "Orig.hpd" "OrigPrecip.sd" "OrigYears"
>>> "PlotChecks" "PlotEff" "plothpd"
>>> [43] "ProvinceNames" "ResNames" "ResNamesOrder"
>>> "Shrink.df" "Shrink.hpd" "SimInits"
>>>
>>> Specifically, the Modis* objects are sorted like this:
>>>
>>> > ls(sorted=TRUE)[26:30]
>>> [1] "Modis.df" "ModisFixed.df" "ModisFixed.hpd" "Modis.hpd"
>>> "ModisPrecip.sd"
>>>
>>> With Modis.* coming both before and after ModisF*. I can't see why there
>>> would be any odd problems with character sets changing (this was all done
>>> on a single computer with no weird locale switching), and the objects are
>>> all
>>> created within a single R session:
>>>
>>> > sessionInfo()
>>> R version 3.2.5 (2016-04-14)
>>> Platform: x86_64-pc-linux-gnu (64-bit)
>>> Running under: Ubuntu 16.04.1 LTS
>>>
>>> locale:
>>> [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
>>> LC_TIME=en_GB.UTF-8 LC_COLLATE=en_US.UTF-8
>>> [5] LC_MONETARY=en_GB.UTF-8 LC_MESSAGES=en_US.UTF-8
>>> LC_PAPER=en_GB.UTF-8 LC_NAME=C
>>> [9] LC_ADDRESS=C LC_TELEPHONE=C
>>> LC_MEASUREMENT=en_GB.UTF-8 LC_IDENTIFICATION=C
>>>
>>> attached base packages:
>>> [1] stats graphics grDevices utils datasets methods base
>>>
>>> other attached packages:
>>> [1] MCMCglmm_2.22.1 ape_3.5 Matrix_1.2-7.1
>>> RColorBrewer_1.1-2 plyr_1.8.4 coda_0.18-1
>>>
>>> loaded via a namespace (and not attached):
>>> [1] cubature_1.1-2 corpcor_1.6.8 tools_3.2.5 Rcpp_0.12.7
>>> nlme_3.1-128 grid_3.2.5 knitr_1.14
>>> [8] tensorA_0.36 lattice_0.20-34
>>>
>>> Can anyone explain what's going on?
>>>
>>> Bob
>>>
>>> --
>>> Bob O'Hara
>>>
>>> Biodiversity and Climate Research Centre Senckenberganlage 25
>>> D-60325 Frankfurt am Main,
>>> Germany
>>>
>>> Tel: +49 69 798 40226
>>> Mobile: +49 1515 888 5440
>>> WWW: http://www.bik-f.de/root/index.php?page_id=219
>>> Blog: http://occamstypewriter.org/boboh/
>>> Journal of Negative Results - EEB: www.jnr-eeb.org
>>>
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>>
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>
> --
> Bob O'Hara
>
> Biodiversity and Climate Research Centre
> Senckenberganlage 25
> D-60325 Frankfurt am Main,
> Germany
>
> Tel: +49 69 798 40226
> Mobile: +49 1515 888 5440
> WWW: http://www.bik-f.de/root/index.php?page_id=219
> Blog: http://occamstypewriter.org/boboh/
> Journal of Negative Results - EEB: www.jnr-eeb.org
>
> ______________________________________________
> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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______________________________________________
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