Dear vod vos,
On 2020-10-04 6:47 p.m., vod vos via R-help wrote:> Hi,
>
> a <- c(1, 4)
> b <- c(5, 8)
>
> a:b
>
> [1] 1 2 3 4 5
> Warning messages:
> 1: In a:b : numerical expression has 2 elements: only the first used
> 2: In a:b : numerical expression has 2 elements: only the first used
>
> how to get:
>
> c(1:5, 4:8)
The simplest way is c(1:5, 4:8) but I don't suppose that's what you
really want. Perhaps the following is what you have in mind:
> unlist(mapply(':', c(1, 4), c(5, 8), SIMPLIFY=FALSE))
[1] 1 2 3 4 5 4 5 6 7 8
In your case, but not more generally,
> as.vector(mapply(':', c(1, 4), c(5, 8)))
[1] 1 2 3 4 5 4 5 6 7 8
also works.
I hope this helps,
John
John Fox, Professor Emeritus
McMaster University
Hamilton, Ontario, Canada
web: https://socialsciences.mcmaster.ca/jfox/
>
> Thanks.
>
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