[R] Extracting only multiple occurrences

[Berend Hasselman]

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