[R] split array into groups by value

[Rui Barradas]

Hello,


pavlo wrote
> 
> I have an array 
> l <- c(1,1,1,1, 0,0,0,0,0, 1,1,1,1,1,1)
> 
> I would like to get a rugged array
> [[1]] 1,1,1,1
> [[2]] 0,0,0,0,0
> [[3]] 1,1,1,1,1,1
> 
> catching every group of contiguous repeated values.  Any help would be
> greatly appreciated!
> -Pavel
> 

Is this it?

x <- c(1,1,1,1, 0,0,0,0,0, 1,1,1,1,1,1) 
contig <- cumsum(abs(diff(c(x[1], x))))
split(x, contig)

Hope this helps,

Rui Barradas


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