What about NAof <- function(x) as(NA, class(x))? -roger
On Wed, May 5, 2010 at 11:57 AM, Hadley Wickham <had...@rice.edu> wrote: > Hi all, > > Is there an existing function that provides the correct type of > missing value for a given vector? e.g. > > NAof(1:3) # NA_integer_ > NAof(pi) # NA_real_ > NAof("a") # NA_character_ > NAof(T) # NA > > ? > > Thanks, > > Hadley > > -- > Assistant Professor / Dobelman Family Junior Chair > Department of Statistics / Rice University > http://had.co.nz/ > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel > -- Roger D. Peng | http://www.biostat.jhsph.edu/~rpeng/ ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel