[R] Extracting only multiple occurrences

[Jim Lemon]

On 08/08/2013 06:52 PM, Berend Hasselman wrote:
>
> On 08-08-2013, at 10:27, Jim Lemon<jim at bitwrit.com.au>  wrote:
>
>> On 08/08/2013 04:23 PM, Kevin Parent wrote:
>>> Well that almost works, and I didn't know about duplicated() so thanks for that. However, it only gives me the duplicated values. I need the original ones too. So the result I want is: [g,g,m,m,s,s,t,t,u,u,u,v,v,x,x,y,y,y]. What duplicated() gives me is [g,m,s,t,u,u,v,x,y,y]
>>>
>>>
>> Hi Kevin,
>> How about:
>>
>> x[x %in% duplicated(x)]
>
> Don't you mean this
>
> x[x %in% x[duplicated(x)]]
>
> Berend
>
Ah, yes, thanks.

Jim