Struct Linear1d 

pub struct Linear1d<T: Float> { /* private fields */ }

Piecewise linear 1-D interpolator.

Constructed from sorted (x, y) data. Each query is evaluated via binary search + linear blend in O(log n).

Implementations

impl<T: Float> Linear1d<T>

pub fn new(xs: &[T], ys: &[T], extrap: Extrapolate) -> Result<Self>

Create a new linear interpolator.

Examples

let xs = [0.0_f64, 1.0, 2.0];
let ys = [0.0_f64, 2.0, 4.0];
let interp = Linear1d::new(&xs, &ys, Extrapolate::Error).unwrap();
let y = interp.eval(0.5).unwrap();
assert!((y - 1.0).abs() < 1e-10);

Errors

• xs and ys must have the same length (>= 2).
• xs must be strictly increasing.
• All values must be finite.

pub fn eval(&self, x: T) -> Result<T>

Evaluate the interpolant at a single point.

Examples

let interp = Linear1d::new(&[0.0_f64, 1.0, 2.0], &[0.0_f64, 1.0, 4.0], Extrapolate::Error).unwrap();
let y = interp.eval(1.5).unwrap();
assert!((y - 2.5).abs() < 1e-10);

pub fn eval_many(&self, xs: &[T]) -> Result<Vec<T>>

Evaluate the interpolant at many points.

Examples

let interp = Linear1d::new(&[0.0_f64, 1.0, 2.0], &[0.0, 2.0, 4.0], Extrapolate::Error).unwrap();
let ys = interp.eval_many(&[0.5, 1.5]).unwrap();
assert!((ys[0] - 1.0).abs() < 1e-10);
assert!((ys[1] - 3.0).abs() < 1e-10);

Trait Implementations

impl<T: Clone + Float> Clone for Linear1d<T>

fn clone(&self) -> Linear1d<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug + Float> Debug for Linear1d<T>

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

Formats the value using the given formatter.