G'day David,
On Tue, 10 Feb 2009 13:23:50 +0100
David Croll <david.cr...@gmx.ch> wrote:
> Well, I knew that attach() only creates a copy of the variables in
> the search path.
>
> What I wanted to ask was how to *retrieve* that copy...
>
> > mat
> id age
> 1 NA NA
> 2 NA NA
> 3 NA NA
> 4 NA NA
> 5 NA NA
>
> > attach(mat)
>
> > id <<- sample(100,5)
> > age <<- rnorm(5,mean=30)
>
> How can I make a new data frame out of the id and age that were
> changed above?
R> new.df <- data.frame(id,age)
Or, perhaps more automatic:
R> new.df <- do.call(data.frame, sapply(ls(pos=2), as.name))
Is this what you are after?
Cheers,
Berwin
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