[R] Simple - Finding vector in a vector
ruipbarradas at sapo.pt
Mon Oct 8 15:02:11 CEST 2012
Hope this helps,
Em 08-10-2012 13:55, Mike Spam escreveu:
> just a simple question.
> Assumed i have a vector,
> FALSE TRUE TRUE TRUE FALSE TRUE FALSE TRUE FALSE
> NA 1 1 1 NA 1 NA 1 NA
> what i need is the position where an element is the same - three (or
> in general multiple) times in a row.
> in this case: i want to get the position where it is TRUE TRUE TRUE or 1 1 1
> it doesn't matter if it is the first, middle or last element. So the
> output could be 2 or 3 or 4
> My idea would be to lag the vector and calc differences... but i would
> prefer any build in (or time saving) function. :)
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> and provide commented, minimal, self-contained, reproducible code.
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