On Fri, 21 Oct 2005, Martin Maechler wrote: >>>>>> "PaCo" == Patrick Connolly <[EMAIL PROTECTED]> >>>>>> on Fri, 21 Oct 2005 13:26:08 +1300 writes: > > PaCo> On Wed, 19-Oct-2005 at 05:09PM +0200, Martin Maechler wrote: > PaCo> |> Lists can have 'dim' attributes and hence be treated as arrays; > PaCo> |> Note that this is pretty rarely used and not too well supported > PaCo> |> by some tools, one could say even 'print()' : > PaCo> |> > PaCo> |> > set.seed(0); L0 <- L <- lapply(rpois(12, lambda=3), seq); > dim(L) <- 3:4; L > PaCo> |> [,1] [,2] [,3] [,4] > PaCo> |> [1,] Integer,5 Integer,3 Integer,5 Integer,3 > PaCo> |> [2,] Integer,2 Integer,5 Integer,6 1 > PaCo> |> [3,] Integer,2 Integer,2 Integer,4 Integer,2 > > PaCo> for an occasion such as this, it can be clearer to do: > > >> transform(L) > PaCo> X1 X2 X3 X4 > PaCo> 1 1, 2, 3, 4, 5 1, 2, 3 1, 2, 3, 4, 5 1, 2, 3 > PaCo> 2 1, 2 1, 2, 3, 4, 5 1, 2, 3, 4, 5, 6 1 > PaCo> 3 1, 2 1, 2 1, 2, 3, 4 1, 2 > > wow! > Thank you Patrick! > > Actually, that's identical to > > data.frame(L) > > which I honestly wouldn't have had expected to work for L.
or even as.data.frame(L). Now replace lambda=3 by lambda=30 and see which one is legible (let alone clearer). I prefer the internal matrix printing in almost all cases. It works for data frames because print.data.frame uses format.data.frame which uses format, and that's how format works on a list. -- Brian D. Ripley, [EMAIL PROTECTED] 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 ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
