pub struct CubicSpline {
pub x: Vec<f64>,
pub a: Vec<f64>,
pub b: Vec<f64>,
pub c: Vec<f64>,
pub d: Vec<f64>,
}Expand description
Result of cubic spline interpolation: piece-wise cubic coefficients.
Each segment [x[i\], x[i+1]] has coefficients (a, b, c, d) such that
S(x) = a + b*(x - x[i]) + c*(x - x[i])^2 + d*(x - x[i])^3.
Fields§
§x: Vec<f64>x-knots (must be strictly increasing).
a: Vec<f64>Coefficients a (= y values at left knot).
b: Vec<f64>Coefficients b.
c: Vec<f64>Coefficients c.
d: Vec<f64>Coefficients d.
Implementations§
Source§impl CubicSpline
impl CubicSpline
Sourcepub fn natural(x: Vec<f64>, y: Vec<f64>) -> Self
pub fn natural(x: Vec<f64>, y: Vec<f64>) -> Self
Build a natural cubic spline through the given (x, y) data.
Natural boundary: second derivative = 0 at both endpoints.
Sourcepub fn clamped(x: Vec<f64>, y: Vec<f64>, d0: f64, dn: f64) -> Self
pub fn clamped(x: Vec<f64>, y: Vec<f64>, d0: f64, dn: f64) -> Self
Build a clamped cubic spline with given endpoint slopes d0 and dn.
Sourcepub fn eval_derivative(&self, t: f64) -> f64
pub fn eval_derivative(&self, t: f64) -> f64
Evaluate the first derivative at t.
Sourcepub fn eval_second_derivative(&self, t: f64) -> f64
pub fn eval_second_derivative(&self, t: f64) -> f64
Evaluate the second derivative at t.
Trait Implementations§
Source§impl Clone for CubicSpline
impl Clone for CubicSpline
Source§fn clone(&self) -> CubicSpline
fn clone(&self) -> CubicSpline
Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source. Read moreAuto Trait Implementations§
impl Freeze for CubicSpline
impl RefUnwindSafe for CubicSpline
impl Send for CubicSpline
impl Sync for CubicSpline
impl Unpin for CubicSpline
impl UnsafeUnpin for CubicSpline
impl UnwindSafe for CubicSpline
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