Better get over it, because it isn't going to change. To avoid it, always work with vectors of the same length.
This is a logical extension of the idea that a scalar adds to every element of a vector. -- Sent from my phone. Please excuse my brevity. On December 12, 2017 9:41:06 PM PST, Maingo via R-help <r-help@r-project.org> wrote: >I'm a newbie for R lang. And I recently came across the "Recycling >Rule" when adding two vectors of unequal length. > >I learned from this tutor [ >http://www.r-tutor.com/r-introduction/vector/vector-arithmetics ] that: > >"""""" > >If two vectors are of unequal length, the shorter one will be recycled >in order to match the longer vector. For example, the following vectors >u and v have different lengths, and their sum is computed by recycling >values of the shorter vector u. > >> u = c(10, 20, 30) > >> v = c(1, 2, 3, 4, 5, 6, 7, 8, 9) > >> u + v > >[1] 11 22 33 14 25 36 17 28 39 > >"""""" > >And I wondered, why the shorter vecter u should be recycled? Why not >just leave the extra values(4,5,6,7,8,9) in the longer vector untouched >by default? > >Otherwise is it better to have another function that could add vectors >without recycling? Right now the recycling feature bugs me a lot. > >Sent with [ProtonMail](https://protonmail.com) Secure Email. > [[alternative HTML version deleted]] > >______________________________________________ >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 >and provide commented, minimal, self-contained, reproducible code. ______________________________________________ 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 and provide commented, minimal, self-contained, reproducible code.
