[R] Detect numerical series

[David Winsemius]

On Feb 11, 2012, at 10:01 AM, syrvn wrote:

> Hello,
>
> I am struggling with detecting successive digits in a numerical series
> vector.
>
> Here is an example:
>
> vec <- c(1, 15, 26, 29, 30, 31, 37, 40, 41)
>
> I want to be able to detect 29, 30, 31 and 40, 41.
>
> Then, I would like to delete the successive digits from the vector.
>
> 1, 15, 26, 29, 37, 40

  vec[ c(TRUE, !diff(vec) == 1) ]
#[1]  1 15 26 29 37 40

>
>
> Cheers
>
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>
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David Winsemius, MD
West Hartford, CT