What is the "na.omit" attribute, and why is that relevant to model.frame.default (where na.action is an argument and only defaults to na.omit)?
Consider > DF <- data.frame(x = c(1, 2, 3), y = c(0, 10, NA)) > attr(model.frame(y ~ x, DF), "na.action") 3 3 attr(,"class") [1] "omit" so the *na.action* attribute is set to allow users to determine what action is taken. This is exactly as documented in ?na.omit. (Further, lots of code (including naresid and napredict) makes use of this.) Please explain in detail what you meant and why the documented actions do not suffice. On Wed, 9 Aug 2006, [EMAIL PROTECTED] wrote: > Full_Name: Tristen Hayfield > Version: 2.3.1 > OS: Windows > Submission from: (NULL) (130.113.139.87) > > > It would be nice if model.frame.default() (and any other model.frame() > functions) set the "na.omit" attribute on the returned d.f, so that the caller > could determine what action was taken. -- 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
