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

Ashim Kapoor ashimkapoor at gmail.com
Thu Oct 13 13:28:32 CEST 2011


Apologies,it should be ans<-cumsum(vec1)

On Thu, Oct 13, 2011 at 4:58 PM, Ashim Kapoor <ashimkapoor at gmail.com> wrote:
> I don't have access to R so I can't test my example but I think this will work.
>
> vec ( as defined by you)
>
> # flip the false and the trues
> vec1<-ifelse(vec==FALSE,TRUE,FALSE)
>
> ans<-cumsum(vec)
>
> Regards,
> Ashim
>
> On Thu, Oct 13, 2011 at 4:45 PM, syrvn <mentor_ at gmx.net> 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
>>
>> --
>> View this message in context: http://r.789695.n4.nabble.com/Create-order-of-numbers-based-on-a-given-vector-tp3901158p3901158.html
>> Sent from the R help mailing list archive at Nabble.com.
>>
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>>
>



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