On Tue, 24 Jun 2003, Duncan Murdoch wrote: > > I'd like to use the modelling functions, in particular model.frame, > with the S4 orientation objects I'm writing.
That's probably not a good idea: I gave up for S-PLUS with S4 classes a long time back. Too many utilities assumed that a classed object was a list with components like call and formula. > However, these use > data.frames, and data.frames object to having my objects put in them. > model.frame checks the mode of the object before it puts it in; > data.frame seems to be trying to coerce my class to data.frame, and > it's failing. > > What's necessary to put a nonstandard object into a data.frame? You need either to enclose it in I() or write an as.data.frame method for it, which may be difficult if it does not have an S3 class. Brian -- 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 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-devel
