Description Usage Arguments Value
Count the number of NA values in a data frame or vector.
1 | count.na(x)
|
an |
object to count. All bets are off if you don't pass a data frame or a vector. |
If x is a vector, returns a single numeric count of the NAs in the vector. If x is a data frame, returns a two-column data frame with counts for each column of the data frame.
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