[R] listing all occurrences in a vector

[Paul Hiemstra]

On 10/19/2011 09:00 AM, Jonas Fransson wrote:
> Dear all,
>
> I have a dataframe with two columns, where NUMBER is the number of occurrences of DEPTH: 
>
>   DEPTH NUMBER
> 1     2      1
> 2     3      2
> 3     2      3
> 4     5      1
>
>> a<-data.frame(c(2,3,2,5),c(1,2,3,1))
>> colnames(a)=c("DEPTH","NUMBER")
> I want a column or a vector where all the DEPTHs are listed: 2, 3, 3, 2, 2, 2, 5 (NUMBER=1 in all cases). 

Hi,

Use the rep function:

with(a, rep(DEPTH, times = NUMBER))

cheers,
Paul

> Is there any simple solution to the problem?
>
> Thanks,
> Jonas
>
>
> Jonas Fransson
> Ph.D.stud.
>  
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>
>
>
>
>
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-- 
Paul Hiemstra, Ph.D.
Global Climate Division
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