duplicates including first occurrence
... Alternatively(but probably less efficient): ## the indexing logical vector with(mtcars, wt %in% wt[duplicated(wt)] ) cheers, Bert 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 Mon, Jan 28, 2019 at 3:53 AM Rui Barradas <ruipbarradas at sapo.pt> wrote:
Hello, Simply OR (|) both conditions. mtcars[duplicated(mtcars$wt) | duplicated(mtcars$wt,fromLast=TRUE),] # mpg cyl disp hp drat wt qsec vs am gear carb #Hornet Sportabout 18.7 8 360.0 175 3.15 3.44 17.02 0 0 3 2 #Duster 360 14.3 8 360.0 245 3.21 3.57 15.84 0 0 3 4 #Merc 280 19.2 6 167.6 123 3.92 3.44 18.30 1 0 4 4 #Merc 280C 17.8 6 167.6 123 3.92 3.44 18.90 1 0 4 4 #Maserati Bora 15.0 8 301.0 335 3.54 3.57 14.60 0 1 5 8 Hope this helps, Rui Barradas ?s 11:43 de 28/01/2019, Knut Krueger via R-help escreveu:
Ho to all i get the results mtcars[duplicated(mtcars$wt,fromLast=TRUE),] Hornet Sportabout 18.7 8 360.0 175 3.15 3.44 17.02 0 0 3 2 Duster 360 14.3 8 360.0 245 3.21 3.57 15.84 0 0 3 4 Merc 280 19.2 6 167.6 123 3.92 3.44 18.30 1 0 4 4 mtcars[duplicated(mtcars$wt),] Merc 280 19.2 6 167.6 123 3.92 3.44 18.3 1 0 4 4 Merc 280C 17.8 6 167.6 123 3.92 3.44 18.9 1 0 4 4 Maserati Bora 15.0 8 301.0 335 3.54 3.57 14.6 0 1 5 8 The first occurrence is missing - is there any possibility to get Hornet Sportabout 18.7 8 360.0 175 3.15 3.44 17.02 0 0 3 2 Merc 280 19.2 6 167.6 123 3.92 3.44 18.30 1 0 4 4 Merc 280C 17.8 6 167.6 123 3.92 3.44 18.90 1 0 4 4 Duster 360 14.3 8 360 245 3.21 3.57 15.84 0 0 3 4 Maserati Bora 15.0 8 301 335 3.54 3.57 14.60 0 1 5 8 Kind regards Knut
______________________________________________ R-help at 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 at 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.