[R] Detecting "Break"

[Don MacQueen]

You can also derive what you need using the rle() 
function, though the which() solution may be 
easier.

-Don

At 4:20 PM -0300 7/5/09, Henrique Dallazuanna wrote:
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>Try this:
>
>which(c(0, diff(x)) != 0)
>
>
>On Sun, Jul 5, 2009 at 4:03 PM, Arun Kumar Saha
><arun.kumar.saha at gmail.com>wrote:
>
>>  Hi all,
>>
>>  say, I have following vector :
>>
>>  x <- c(rep(5, 5), rep(3,4), rep(5,10))
>>
>>  Now I want to get the index numbers where elements of that vector changes
>>  i.e. in above example I want to get a vector with elements : 6, 10. Because
>>  at that indices, element of original vector changes value.
>>
>>  Is there any R function to do that?
>>
>>  Regards,
>>
>>         [[alternative HTML version deleted]]
>>
>>  ______________________________________________
>>  R-help at 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 at 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.


-- 
---------------------------------
Don MacQueen
Lawrence Livermore National Laboratory
Livermore, CA, USA
925-423-1062
macq at llnl.gov