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/
I just do as.integer(NA), as.numeric(NA), as.character(NA), etc. -- Tony Plate On 5/5/2010 11:57 AM, Hadley Wickham 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 > >
What about NAof <- function(x) as(NA, class(x))? -roger On Wed, May 5, 2010 at 11:57 AM, Hadley Wickham <hadley at 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 at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel >-- Roger D. Peng | http://www.biostat.jhsph.edu/~rpeng/
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 <hadley at 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 at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel >