Trait polars_core::prelude::ChunkAggSeries

pub trait ChunkAggSeries {
    fn sum_as_series(&self) -> Series { ... }
    fn max_as_series(&self) -> Series { ... }
    fn min_as_series(&self) -> Series { ... }
    fn prod_as_series(&self) -> Series { ... }
}

Aggregations that return Series of unit length. Those can be used in broadcasting operations.

Provided Methods

fn sum_as_series(&self) -> Series

Get the sum of the ChunkedArray as a new Series of length 1.

Examples found in repository

src/series/implementations/boolean.rs (line 330)

    fn _sum_as_series(&self) -> Series {
        ChunkAggSeries::sum_as_series(&self.0)
    }

src/series/implementations/list.rs (line 204)

    fn _sum_as_series(&self) -> Series {
        ChunkAggSeries::sum_as_series(&self.0)
    }

src/series/implementations/utf8.rs (line 316)

    fn _sum_as_series(&self) -> Series {
        ChunkAggSeries::sum_as_series(&self.0)
    }

fn max_as_series(&self) -> Series

Get the max of the ChunkedArray as a new Series of length 1.

Examples found in repository

src/series/implementations/boolean.rs (line 333)

    fn max_as_series(&self) -> Series {
        ChunkAggSeries::max_as_series(&self.0)
    }

src/series/implementations/list.rs (line 207)

    fn max_as_series(&self) -> Series {
        ChunkAggSeries::max_as_series(&self.0)
    }

src/series/implementations/utf8.rs (line 319)

    fn max_as_series(&self) -> Series {
        ChunkAggSeries::max_as_series(&self.0)
    }

fn min_as_series(&self) -> Series

Get the min of the ChunkedArray as a new Series of length 1.

Examples found in repository

src/series/implementations/boolean.rs (line 336)

    fn min_as_series(&self) -> Series {
        ChunkAggSeries::min_as_series(&self.0)
    }

src/series/implementations/list.rs (line 210)

    fn min_as_series(&self) -> Series {
        ChunkAggSeries::min_as_series(&self.0)
    }

src/series/implementations/utf8.rs (line 322)

    fn min_as_series(&self) -> Series {
        ChunkAggSeries::min_as_series(&self.0)
    }

fn prod_as_series(&self) -> Series

Get the product of the ChunkedArray as a new Series of length 1.

Examples found in repository

src/series/mod.rs (line 666)

    pub fn product(&self) -> Series {
        #[cfg(feature = "product")]
        {
            use DataType::*;
            match self.dtype() {
                Boolean => self.cast(&DataType::Int64).unwrap().product(),
                Int8 | UInt8 | Int16 | UInt16 => {
                    let s = self.cast(&Int64).unwrap();
                    s.product()
                }
                Int64 => {
                    let ca = self.i64().unwrap();
                    ca.prod_as_series()
                }
                Float32 => {
                    let ca = self.f32().unwrap();
                    ca.prod_as_series()
                }
                Float64 => {
                    let ca = self.f64().unwrap();
                    ca.prod_as_series()
                }
                dt => panic!("cumprod not supported for dtype: {dt:?}"),
            }
        }
        #[cfg(not(feature = "product"))]
        {
            panic!("activate 'product' feature")
        }
    }

Implementors

impl ChunkAggSeries for BooleanChunked

impl ChunkAggSeries for ListChunked

impl ChunkAggSeries for Utf8Chunked

impl<T> ChunkAggSeries for ChunkedArray<T>where
    T: PolarsNumericType,
    <T::Native as Simd>::Simd: Add<Output = <T::Native as Simd>::Simd> + Sum<T::Native> + SimdOrd<T::Native>,
    ChunkedArray<T>: IntoSeries,

impl<T: PolarsObject> ChunkAggSeries for ObjectChunked<T>