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
Às 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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