Why did you expect otherwise?: fix() is treating it as matrix and ?edit.matrix says that it only works on 'simple data frames' (and converts matrices to such).
Editing R objects can easily change aspects of them, as dput() is not faithful, environments can get lost and so on. On Wed, 9 May 2007, Simone Giannerini wrote: > Dear all, > > it looks like fix() changes the class of mts objects, here is a reproducible > example (tested both on WinXP and Linux): > >> x <- ts(cbind(1:5,1:5)) >> x > Time Series: > Start = 1 > End = 5 > Frequency = 1 > Series 1 Series 2 > 1 1 1 > 2 2 2 > 3 3 3 > 4 4 4 > 5 5 5 >> class(x) > [1] "mts" "ts" >> edit(x) > Series 1 Series 2 > [1,] 1 1 > [2,] 2 2 > [3,] 3 3 > [4,] 4 4 > [5,] 5 5 >> class(x) > [1] "mts" "ts" >> fix(x) >> class(x) > [1] "matrix" >> x > Series 1 Series 2 > [1,] 1 1 > [2,] 2 2 > [3,] 3 3 > [4,] 4 4 > [5,] 5 5 > >> R.version > _ > platform i386-pc-mingw32 > arch i386 > os mingw32 > system i386, mingw32 > status > major 2 > minor 5.0 > year 2007 > month 04 > day 23 > svn rev 41293 > language R > version.string R version 2.5.0 (2007-04-23) > >> R.version > platform x86_64-unknown-linux-gnu > arch x86_64 > os linux-gnu > system x86_64, linux-gnu > status > major 2 > minor 5.0 > year 2007 > month 04 > day 23 > svn rev 41293 > language R > version.string R version 2.5.0 (2007-04-23) > > ______________________________________________________ > > Simone Giannerini > Dipartimento di Scienze Statistiche "Paolo Fortunati" > Universita' di Bologna > Via delle belle arti 41 - 40126 Bologna, ITALY > Tel: +39 051 2098262 Fax: +39 051 232153 > ______________________________________________________ > > [[alternative HTML version deleted]] > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel > -- 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-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel