On 12/08/11 07:37, m.marcinmichal wrote:
Hi,
It's my problem, supppose that we have a data.frame:
t
a b c
1 1 1 1
2 0 1 1
3 1 1 1
4 0 0 0
5 1 0 1
6 0 1 0
7 1 1 1
8 0 1 0
I need extract duplicat row i.e i nedd frame like this
a b c
3 1 1 1
8 0 1 0
I try use subset(t, duplicated(t)) and t[duplicated(t), ] but this command
return
a b c
3 1 1 1
7 1 1 1
8 0 1 0
unique(t[duplicated(t),])
BTW "t" is not a good name for an object since it is the name of a
base function in R (the transpose function).
cheers,
Rolf Turner
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