Perhaps something about like this: which(diff(a) > mean(diff(a)))
On Wed, Apr 22, 2009 at 8:27 AM, Hans-Henning Gabriel < hanshenning.gabr...@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 > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O [[alternative HTML version deleted]]
______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
