Trait polars_core::chunked_array::ops::ChunkUnique

pub trait ChunkUnique<T> {
    fn unique(&self) -> Result<ChunkedArray<T>>;
    fn arg_unique(&self) -> Result<UInt32Chunked>;

    fn n_unique(&self) -> Result<usize> { ... }
    fn is_unique(&self) -> Result<BooleanChunked> { ... }
    fn is_duplicated(&self) -> Result<BooleanChunked> { ... }
    fn value_counts(&self) -> Result<DataFrame> { ... }
}

Get unique values in a ChunkedArray

Required methods

fn unique(&self) -> Result<ChunkedArray<T>>

Get unique values of a ChunkedArray

fn arg_unique(&self) -> Result<UInt32Chunked>

Get first index of the unique values in a ChunkedArray. This Vec is sorted.

Provided methods

fn n_unique(&self) -> Result<usize>

Number of unique values in the ChunkedArray

fn is_unique(&self) -> Result<BooleanChunked>

Get a mask of all the unique values.

fn is_duplicated(&self) -> Result<BooleanChunked>

Get a mask of all the duplicated values.

fn value_counts(&self) -> Result<DataFrame>

Count the unique values.

Implementors

impl ChunkUnique<BooleanType> for BooleanChunked

impl ChunkUnique<CategoricalType> for CategoricalChunked

impl ChunkUnique<Float32Type> for Float32Chunked

impl ChunkUnique<Float64Type> for Float64Chunked

impl ChunkUnique<ListType> for ListChunked

impl ChunkUnique<Utf8Type> for Utf8Chunked

impl<T> ChunkUnique<ObjectType<T>> for ObjectChunked<T>

impl<T> ChunkUnique<T> for ChunkedArray<T> where
    T: PolarsIntegerType,
    T::Native: Hash + Eq + NumCast,
    ChunkedArray<T>: ChunkOps + IntoSeries,