Regardless of the value of the other arguments, the first element in the output of seq() is _always_ `from`.
Hadley On Mon, Jun 15, 2015 at 9:56 AM, Millot Gael <gael.mil...@curie.fr> wrote: > Thanks for your answer. > > The rational behind my proposal is why taking "from" when length.out=1, more > than "to" or "NA", or " integer(0) " ? > > This question seems basic. But is is not in certain situations, like when > length.out = unpredictable positive integer. > And I haven't found in ?seq() the particular behavior of this function when > length.out = 1. > > Thanks for your help ! > > Best, > > Gael. > > > De : Gabriel Becker [mailto:gmbec...@ucdavis.edu] > Envoyé : lundi 15 juin 2015 16:25 > À : Millot Gael > Cc : r-devel > Objet : Re: [Rd] Add on argument in seq() > > > Millot, > > I think the problem with that is that what you propose isn't a sequence > starting at from in any meaningful way, and thus does not satisfy the > contract of the seq function. > > Best, > ~G > On Jun 15, 2015 7:12 AM, "Millot Gael" > <gael.mil...@curie.fr<mailto:gael.mil...@curie.fr>> wrote: > Hi. > > I have a problem with the default behavior of seq(), which gives the argument > "from" when the argument length.out = 1. > This behavior is annoying when the number of value determine in length.out is > not predictable. > Would it be possible to add an argument that propose the median/mean, i.e. > (from + to) / 2 when length.out = 1 ? Examples: >> seq(from = 1, to = 11, length.out=1) # current method gives "from" > 1 > >> seq(from = 1, to = 11, length.out=1) # alternative method gives the >> intermediate value of "from" and "to" > 6 > > Many thanks for your help. > > Best wishes, > > Gael Millot. > > > Gael Millot > UMR 3244 (IC-CNRS-UPMC) et Universite Pierre et Marie Curie > Equipe Recombinaison et instabilite genetique > Pav Trouillet Rossignol 5eme etage > Institut Curie > 26 rue d'Ulm > 75248 Paris Cedex 05 > FRANCE > tel : 33 1 56 24 66 34 > fax : 33 1 56 24 66 44 > Email : gael.mil...@curie.fr<mailto:gael.mil...@curie.fr> > http://perso.curie.fr/Gael.Millot/index.html > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-devel@r-project.org<mailto: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 -- http://had.co.nz/ ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel