Trait math::iter::weighted_sum::WeightedSum

pub trait WeightedSum<Item, V> where
    V: Copy + Num, {
    pub fn weighted_sum(self) -> V;
}

Example

use math::{
    interval::I64Interval,
    iter::{
        binned_interval_iter::{AggregateOp, IntoBinnedIntervalIter},
        weighted_sum::WeightedSum,
    },
    partition::integer_interval_map::IntegerIntervalMap,
};

let bin_size = 5;
let mut interval_map = IntegerIntervalMap::new();
interval_map.aggregate(I64Interval::new(-1, 1), 2);
interval_map.aggregate(I64Interval::new(14, 17), -1);

// interval coordinates                        | value
// -1 | 0 1  |   ...   |        |              | +2
//    |      |   ...   |     14 | 15 16 17     | -1
//---------------------------------------------
// 0.4|| 0.8 ||  ...   || -0.2 || -0.6         | bin average
assert_eq!(
    interval_map
        .iter()
        .into_binned_interval_iter(
            bin_size,
            AggregateOp::Average,
            Box::new(|(&interval, &val)| (interval, val as f64))
        )
        .weighted_sum(),
    2.0
);

Required methods

pub fn weighted_sum(self) -> V

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Implementors

impl<I, P, Dtype> WeightedSum<(P, Dtype), Dtype> for I where
    I: Iterator<Item = (P, Dtype)>,
    P: Finite,
    Dtype: Float + FromPrimitive, 

pub fn weighted_sum(self) -> Dtype

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