Count the number of NA values in a vector.
Author
Justin Wilkins, justin.wilkins@occams.com
Examples
if (FALSE) { # \dontrun{
count_na(c(0,5,7,NA,3,3,NA))
} # }
Count the number of NA values in a vector.
Justin Wilkins, justin.wilkins@occams.com
if (FALSE) { # \dontrun{
count_na(c(0,5,7,NA,3,3,NA))
} # }