[R] Combining columns of different length

[Petr Pikal]

On 26 Oct 2004 at 15:46, Federico Gherardini wrote:

> Hi all,
> 
> Simple and direct question....
> Is it possible to add a shorter column to a data frame or matrix in
> such a way that the missing values are replaced with NAs? For example
> suppose I have
> 
> 3   2
> 4   2
> 5   8
> 
> and I want to add a column
> 
> 3
> 3
> 
> to get...
> 
> 3   2   3
> 4   2   3
> 5   8   NA

Hi

Maybe there is another approach but this shall work

no.r <- nrow(df)
l.v <- length(your.short.vector)
difer <- no.r-l.v
cbind(df,c(your.short.vector,rep(NA,difer)))

Cheers
Petr

> 
> Thanks
> 
> Federico
> 
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Petr Pikal
petr.pikal at precheza.cz