[R] generating sequences with gaps

[Gabor Grothendieck]

Here are a few possibilies:

x <- c(4, 12, 20)

rep(x, each = 3) + 0:2

rep(x, each = 3) + sequence(rep(3, length(x))) - 1

c(sapply(x, seq, length = 3))


On 7/25/06, etienne <etiennesky at yahoo.com> wrote:
> I need sequences that have gaps in them, such as the
> following:
>
> 4 5 6 | 12 13 14 | 20 21 22
>
> a simple question, I've been scratching my head for a
> R function that will do this
>
> The : and seq do not allow this, and the c() can be
> used although not in an automatic way.  I'm sure there
> is a way to do it without using a for() construct.
>
> Thank you
>
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