Trait polars_core::chunked_array::ops::ChunkUnique

pub trait ChunkUnique<T: PolarsDataType> {
    fn unique(&self) -> PolarsResult<ChunkedArray<T>>;
    fn arg_unique(&self) -> PolarsResult<IdxCa>;

    fn n_unique(&self) -> PolarsResult<usize> { ... }
    fn is_unique(&self) -> PolarsResult<BooleanChunked> { ... }
    fn is_duplicated(&self) -> PolarsResult<BooleanChunked> { ... }
    fn mode(&self) -> PolarsResult<ChunkedArray<T>> { ... }
}

Get unique values in a ChunkedArray

Required Methods

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

Get unique values of a ChunkedArray

fn arg_unique(&self) -> PolarsResult<IdxCa>

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

Provided Methods

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

Number of unique values in the ChunkedArray

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

Get a mask of all the unique values.

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

Get a mask of all the duplicated values.

fn mode(&self) -> PolarsResult<ChunkedArray<T>>

Available on crate feature mode only.

The most occurring value(s). Can return multiple Values

Implementors

impl ChunkUnique<BinaryType> for BinaryChunked

Available on crate feature dtype-binary only.

impl ChunkUnique<BooleanType> for BooleanChunked

impl ChunkUnique<Float32Type> for Float32Chunked

impl ChunkUnique<Float64Type> for Float64Chunked

impl ChunkUnique<Utf8Type> for Utf8Chunked

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

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

Available on crate feature object only.