[R] uniq -c

[Henrique Dallazuanna]

See ?table function.

On 21/11/2007, Alexy Khrabrov <deliverable at gmail.com> wrote:
> Is there an R analog of the Unix command uniq -c:
>
> http://en.wikipedia.org/wiki/Uniq
>
> Given an array x, uniq -c replaces each contiguous subsequence of
> identical numbers with a tuple (count, number).  E.g.
>
> $ cat > usample
> 10
> 10
> 9
> 8
> 8
> 7
> 7
> 7
> 6
> 3
> 1
> 1
> 1
> 0
> $ uniq -c usample
>       2 10
>       1 9
>       2 8
>       3 7
>       1 6
>       1 3
>       3 1
>       1 0
>
> Cheers,
> Alexy
>
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-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O