Thanks, for the explanation. Still, I think this is surprising bahaviour which might be handled better.
Best, Peter Am 20.10.2017 9:49 nachm. schrieb "Iñaki Úcar" <i.uca...@gmail.com>: > Hi Peter, > > 2017-10-20 21:33 GMT+02:00 Peter Meissner <retep.meiss...@gmail.com>: > > Hey, > > > > I found this - for me - quite surprising and puzzling behaviour of > split(). > > > > > > split(1:11, as.character(1:11)) > > split(1:11, 1:11) > > > > > > When splitting by numerics everything works as expected - sorting of > input > > == sorting of output -- but when using a character vector everything gets > > re-sorted alphabetical. > > > > > > Although, there are some references in the help files to what happens > when > > using split, I did not find any note on this - for me - rather unexpected > > behaviour. > > As the documentation states, > > f: a ‘factor’ in the sense that ‘as.factor(f)’ defines the > grouping, or a list of such factors in which case their > interaction is used for the grouping. > > And, in fact, > > > as.factor(1:11) > [1] 1 2 3 4 5 6 7 8 9 10 11 > Levels: 1 2 3 4 5 6 7 8 9 10 11 > > > as.factor(as.character(1:11)) > [1] 1 2 3 4 5 6 7 8 9 10 11 > Levels: 1 10 11 2 3 4 5 6 7 8 9 > > Regards, > Iñaki > > > I would like it best when the sorting of split results stays the same no > > matter the input (sorting of input == sorting of output) > > > > If that is not possibly a note of caution in the help pages and maybe an > > example might be valuable. > > > > > > Best, Peter > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-devel@r-project.org mailing list > > https://stat.ethz.ch/mailman/listinfo/r-devel > [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
