>>>>> Bert Gunter >>>>> on Thu, 9 May 2019 08:46:15 -0700 writes:
> Juan: > No, I think there may be a bug: >> duplicated(array(c(1,2,3,2,5,6),c(3,2)), MARGIN=1:2) > [,1] [,2] > [1,] FALSE TRUE > [2,] FALSE FALSE > [3,] FALSE FALSE > ## This is wrong > ## But if we first define the array... >> a <- array(c(1,2,3,4,5,6), c(3,2)) >> duplicated(a, MARGIN = 1:2) > [,1] [,2] > [1,] FALSE FALSE > [2,] FALSE FALSE > [3,] FALSE FALSE > ## This is right Well, the two arrays are different: The first has a '2' instead of a '4' ((and this would not happen if you used 1:6 instead ..)) > I'll wait a bit before filing a bug report so that any error I may be > making can be pointed out (note that my R version is NOT current, so I need > to update). >> sessionInfo() > R version 3.5.2 (2018-12-20) > Platform: x86_64-apple-darwin15.6.0 (64-bit) > Running under: macOS Mojave 10.14.4 > Matrix products: default > BLAS: > /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib > LAPACK: > /Library/Frameworks/R.framework/Versions/3.5/Resources/lib/libRlapack.dylib > locale: > [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8 > attached base packages: > [1] stats graphics grDevices utils datasets methods base > loaded via a namespace (and not attached): > [1] compiler_3.5.2 tools_3.5.2 > Bert Gunter > "The trouble with having an open mind is that people keep coming along and > sticking things into it." > -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) > On Thu, May 9, 2019 at 8:10 AM Juan Gomez <juangomezdu...@gmail.com> wrote: >> I think there is an error in duplicated() help page when it states that: >> "The array method calculates for each element of the sub-array >> specified by MARGIN if the remaining dimensions are identical to those >> for an earlier (or later, when fromLast = TRUE) element (in row-major >> order). " >> Instead of: >> "... (in column-major order)" >> >> For instance: >> duplicated(array(c(1,2,3,2,5,6),c(3,2)), MARGIN=1:2) >> [,1] [,2] >> [1,] FALSE TRUE >> [2,] FALSE FALSE >> [3,] FALSE FALSE >> > >> >> ______________________________________________ >> 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. >> > [[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.