Try this: replace(x[1][], TRUE, NA)
or replace(x[[1]][], TRUE, NA) depending on what you want. 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 > ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel