Re: [R] Inserting a subsequence between values of a vector

From: Gabor Grothendieck <ggrothendieck_at_gmail.com>
Date: Tue, 4 Dec 2007 11:37:53 -0500

Take the rle, fix up the result and take the invese.rle. Our formula adds 0's to the end too so remove those with head:

head(inverse.rle(with(rle(x), list(lengths = c(rbind(lengths, 3)), values = c(rbind(values, 0))))), -3)

On Dec 4, 2007 10:49 AM, Serguei Kaniovski <Serguei.Kaniovski_at_wifo.ac.at> wrote:
>
> Hallo,
>
> suppose I have a vector:
>
> x <- c(1,1,1,2,2,3,3,3,3,3,4)
>
> How can I generate a vector/sequence in which a fixed number of zeroes (say
> 3) is inserted between the consecutive values, so I get
>
> 1,1,1,0,0,0,2,2,0,0,0,3,3,3,3,3,0,0,0,4
>
> thanks a lot,
> Serguei
> [[alternative HTML version deleted]]
>
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