Some functions to handle NAs
allNA
tests if all elements are NA, and includeNA
sets the
NA
s in a character vector or factor to an explicit label.
allNA(x) includeNA(x, label, ...) ## S3 method for class 'factor' includeNA(x, label = "(Missing)", first = FALSE, ...) ## Default S3 method: includeNA(x, label = "(Missing)", ...)
x |
An object |
label |
A character string denoting the label to set |
... |
Other arguments (not in use at this time). |
first |
Logical; should the new label be the first level? |
Ethan Heinzen
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