bigframes.geopandas.GeoSeries.nunique# GeoSeries.nunique() → int# Return number of unique elements in the object. Excludes NA values by default. Examples: >>> s = bpd.Series([1, 3, 5, 7, 7]) >>> s 0 1 1 3 2 5 3 7 4 7 dtype: Int64 >>> s.nunique() np.int64(4) Returns: number of unique elements in the object. Return type: int