Perhaps something about like this:

which(diff(a) > mean(diff(a)))

On Wed, Apr 22, 2009 at 8:27 AM, Hans-Henning Gabriel <
hanshenning.gabriel@gmail.com> wrote:

> Hi,
>
> suppose I have a simple sorted vector like this:
>
> a <- c(2,3,3,5,6,8,8,9,15, 25, 34,36,36,38,41,43,44,44,46);
>
> Is there a function in R, I can use to discover that from index 8 to index
> 11 the values are changing significantly?
> The function should return a value pointing to one of the indices 8, 9, 10
> or 11. Any of them would be fine.
> The difficulty is that there may be no big gap. I mean, indices 8 and 11
> are somehow "connected" by indices 9 and 10. So, it's not an option to just
> search for biggest difference between the values.
>
> Perfect would be a function that is able to discover multiple changes if it
> is present in the data.
>
> Thanks!!
> Henning
>
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>



-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O

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