[R] Extracting only multiple occurrences

[Jim Lemon]

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)]

Jim