n_distinct

Count distinct values

Returns the number of distinct values in a vector or list. Inside summarize(), this acts as an aggregation expression.

Parameters

• x (Vector | List): The input values.

• na_rm (Bool): = false Exclude NA values from the count.

Returns

The number of distinct values.

Examples

summarize(df, $unique_species = n_distinct($species))

See Also

distinct, summarize