Function polars::functions::cov_i

source · [−]

pub fn cov_i<T>(a: &ChunkedArray<T>, b: &ChunkedArray<T>) -> Option<f64> where
    T: PolarsIntegerType,
    <T as PolarsNumericType>::Native: ToPrimitive,
    <<T as PolarsNumericType>::Native as Simd>::Simd: Add<<<T as PolarsNumericType>::Native as Simd>::Simd>,
    <<T as PolarsNumericType>::Native as Simd>::Simd: Sum<<T as PolarsNumericType>::Native>,
    <<T as PolarsNumericType>::Native as Simd>::Simd: SimdOrd<<T as PolarsNumericType>::Native>,
    <<<T as PolarsNumericType>::Native as Simd>::Simd as Add<<<T as PolarsNumericType>::Native as Simd>::Simd>>::Output == <<T as PolarsNumericType>::Native as Simd>::Simd,

Expand description

Compute the covariance between two columns.