Your answer makes much more sense to me. I will probably end up adding the function to a package. Some processes and decisions on how R is developed seems to be obscure to me.
Thank you Morgan On Fri, 11 Oct 2019 15:30 Avraham Adler, <avraham.ad...@gmail.com> wrote: > It’s rather difficult. For example, the base R Kendall tau is written with > the naive O(n^2). The much faster O(n log n) implementation was programmed > and is in the pcaPP package. When I say much faster, I mean that my > implementation in Excel VBA was faster than R for 10,000 or so pairs. > R-Core decided not to implement that code, and instead made a note about > the faster implementation living in pcaPP in the help for “cor”. See [1] > for the 2012 discussion. My point is it’s really really difficult to get > something in Base R. Develop it well, put it in a package, and you have > basically the same result. > > Avi > > [1] https://stat.ethz.ch/pipermail/r-devel/2012-June/064351.html > > On Fri, Oct 11, 2019 at 9:55 AM Morgan Morgan <morgan.email...@gmail.com> > wrote: > >> How do you prove usefulness of a feature? >> Do you have an example of a feature that has been added after proving to >> be >> useful in the package space first? >> >> Thank you, >> Morgan >> >> On Fri, 11 Oct 2019 13:53 Michael Lawrence, <lawrence.mich...@gene.com> >> wrote: >> >> > Thanks for this interesting suggestion, Morgan. While there is no strict >> > criteria for base R inclusion, one criterion relevant in this case is >> that >> > the usefulness of a feature be proven in the package space first. >> > >> > Michael >> > >> > >> > On Fri, Oct 11, 2019 at 5:19 AM Morgan Morgan < >> morgan.email...@gmail.com> >> > wrote: >> > >> >> On Fri, 11 Oct 2019 10:45 Duncan Murdoch, <murdoch.dun...@gmail.com> >> >> wrote: >> >> >> >> > On 11/10/2019 6:44 a.m., Morgan Morgan wrote: >> >> > > Hi All, >> >> > > >> >> > > I was looking for a function to find a small matrix inside a larger >> >> > matrix >> >> > > in R similar to the one described in the following link: >> >> > > >> >> > > >> >> > >> >> >> https://www.mathworks.com/matlabcentral/answers/194708-index-a-small-matrix-in-a-larger-matrix >> >> > > >> >> > > I couldn't find anything. >> >> > > >> >> > > The above function can be seen as a "generalisation" of the "which" >> >> > > function as well as the function described in the following post: >> >> > > >> >> > > >> >> > >> >> >> https://coolbutuseless.github.io/2018/04/03/finding-a-length-n-needle-in-a-haystack/ >> >> > > >> >> > > Would be possible to add such a function to base R? >> >> > > >> >> > > I am happy to work with someone from the R core team (if you wish) >> and >> >> > > suggest an implementation in C. >> >> > >> >> > That seems like it would sometimes be a useful function, and maybe >> >> > someone will point out a package that already contains it. But if >> not, >> >> > why would it belong in base R? >> >> > >> >> >> >> If someone already implemented it, that would great indeed. I think it >> is >> >> a >> >> very general and basic function, hence base R could be a good place for >> >> it? >> >> >> >> But this is probably not a good reason; maybe someone from the R core >> team >> >> can shed some light on how they decide whether or not to include a >> >> function >> >> in base R? >> >> >> >> >> >> > Duncan Murdoch >> >> > >> >> >> >> [[alternative HTML version deleted]] >> >> >> >> ______________________________________________ >> >> R-devel@r-project.org mailing list >> >> https://stat.ethz.ch/mailman/listinfo/r-devel >> >> >> > >> > >> > -- >> > Michael Lawrence >> > Scientist, Bioinformatics and Computational Biology >> > Genentech, A Member of the Roche Group >> > Office +1 (650) 225-7760 >> > micha...@gene.com >> > >> > Join Genentech on LinkedIn | Twitter | Facebook | Instagram | YouTube >> > >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> R-devel@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-devel >> > -- > Sent from Gmail Mobile > [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
