[R] Create order of numbers based on a given vector

[Dimitris Rizopoulos]

try this:

vec <- c(FALSE, FALSE, TRUE, FALSE, TRUE, TRUE, FALSE, FALSE)

cumsum(!vec)


I hope it helps.

Best,
Dimitris


On 10/13/2011 1:15 PM, syrvn wrote:
> Hello!
>
> If I have a vector vec<- c(FALSE, FALSE, TRUE, FALSE, TRUE, TRUE, FALSE
> FALSE)
>
> I can I create the following order of numbers based on vector vec:
>
> 1, 2, 2, 3, 3, 3, 4, 5
>
> Whenever there is a FALSE I increase the number (starting with 1).
> Whenever there is a TRUE I set the same number as the previous FALSE has
> been assigned to.
>
>
> I would be happy for any input
>
> Cheers,
> Syrvn
>
> --
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-- 
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center

Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands
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