Function interp_array

pub fn interp_array<T, const N: usize>(
    x: &[T],
    y: &[T],
    xp: &[T; N],
    mode: &InterpMode<T>,
) -> [T; N]
where
    T: Num + PartialOrd + Copy,

Linearly interpolate the data points given by the x and y slices at each of the points in the xp slice, using the interpolation method provided by mode.

Returns a [T; N] containing the equivalent y coordinates to each of the x coordinates given by xp.

This is equivalent to running interp iteratively for each value in xp, but more efficient as intermediate calculations are not repeated.

If the lengths of x and y differ, only the number of elements in the shorter slice are considered; excess elements are ignored.

If the length of either x or y is 0, 0 is returned for each xp. If the length of either is 1, y[0] is returned. If both are 2 elements or longer the interpolations are performed as expected.

Example

use interp::interp_array;
use interp::InterpMode;

let x = [0.0, 1.0, 2.0, 3.0];
let y = [1.0, 3.0, 4.0, 2.0];

let xp = [0.5, 2.5, 4.0];

assert_eq!(interp_array(&x, &y, &xp, &InterpMode::Extrapolate), [2.0, 3.0, 0.0]);