Struct PointBackground 

pub struct PointBackground { /* private fields */ }

Linear interpolation through fixed knots with refinable values.

Implementations

impl PointBackground

pub fn new( background_id: impl Into<String>, knot_x: Vec<f64>, values: Vec<f64>, ) -> Result<Self, BackgroundError>

Construct a fixed-knot piecewise-linear model with constant end extrapolation.

Errors

Returns BackgroundError for invalid IDs, knots, or values.

pub fn knot_x(&self) -> &[f64]

Borrow fixed interpolation knots.

Trait Implementations

impl Clone for PointBackground

fn clone(&self) -> PointBackground

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PointBackground

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl DifferentiableBackground for PointBackground

fn background_id(&self) -> &str

Stable model identifier.

fn parameter_names(&self) -> Vec<String>

Stable parameter names in coefficient order.

fn coefficients(&self) -> Vec<f64>

Current physical coefficients in derivative-column order.

fn parameter_bounds(&self) -> Vec<ParameterBounds>

Physical parameter bounds in coefficient order.

fn basis(&self, x_deg: &[f64]) -> Result<BackgroundBasis, BackgroundError>

Evaluate sample-by-parameter analytical derivatives.

fn calculate(&self, x_deg: &[f64]) -> Result<Vec<f64>, BackgroundError>

Evaluate the background on an ordered finite grid.

fn replace_coefficients( &self, coefficients: &[f64], ) -> Result<Self, BackgroundError>

Return the same model with replacement coefficients.

fn basis_is_invariant(&self) -> bool

Return whether the analytical basis is coefficient-invariant.

impl PartialEq for PointBackground

fn eq(&self, other: &PointBackground) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for PointBackground