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poly_fit

qualia_core_db::solvers::interpolation::least_squares

Function poly_fit 

Source 
pub fn poly_fit(
    xs: &[f64],
    ys: &[f64],
    degree: usize,
) -> Result<Vec<f64>, InterpolationError>
Expand description

Fit a degree-degree polynomial to (xs, ys) in the least-squares sense. Returns coefficients in ascending order [c₀, c₁, …, c_degree] (so the polynomial is Σ cₖ xᵏ). Fails closed if there are too few points or the system is singular.