Your dummy data is not a reproducible example. I'm guessing ?unique could help you.

Hope this helps,

baptiste

On 14 Jan 2009, at 13:19, glenn wrote:

For a list say;

list1<-{1,2,3,4,5,2,1}

How do I remove the duplicates please?
My real list is 20,000 obs long of dates with many duplicates

Regards

Glenn

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Baptiste Auguié

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