[R] How to append to a data.frame?
David Kreil
kreil at ebi.ac.uk
Tue Dec 9 09:05:17 CET 2003
Ok, how can I both allocate storage and specify column names in a data.frame
call, please? Apologies if I'm being slow here.
With many thanks again,
David.
> > Yes, once I've named the first column, I can add further ones by saying
> > d[c("x","y","z")]=NA or such. I was just wondering whether that was the way to
> > do it or whether there was a more elegant approach. Preallocation was the
> > critical clue I needed.
>
> Use an initial data.frame call naming all the columns.
>
> --
> Brian D. Ripley, ripley at stats.ox.ac.uk
> Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
> University of Oxford, Tel: +44 1865 272861 (self)
> 1 South Parks Road, +44 1865 272866 (PA)
> Oxford OX1 3TG, UK Fax: +44 1865 272595
>
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