Some functions to handle NAs

Source: R/na.operations.R

allNA tests if all elements are NA, and includeNA sets the NAs in a character vector or factor to an explicit label.

allNA(x)

includeNA(x, label, ...)

# S3 method for factor
includeNA(x, label = "(Missing)", first = FALSE, ...)

# S3 method for default
includeNA(x, label = "(Missing)", ...)

Arguments

x

An object
label

A character string denoting the label to set NAs to.
...

Other arguments (not in use at this time).
first

Logical; should the new label be the first level?

See also

is.na, anyNA

Author

Ethan Heinzen