Message-ID: <10fa4e79-fa37-77cd-1077-6b9fc93f88ed@sapo.pt>
Date: 2019-01-28T11:51:37Z
From: Rui Barradas
Subject: duplicates including first occurrence
In-Reply-To: <476e6b4b-d2d4-0a0a-b1d3-7833a82bfcf1@krueger-family.de>
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
>
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