Struct IsometryDuchonRadialSource 

pub struct IsometryDuchonRadialSource {
    pub centers: Arc<Array2<f64>>,
    pub radial_coefficients: Arc<Array2<f64>>,
    pub length_scale: Option<f64>,
    pub nullspace_order: DuchonNullspaceOrder,
    pub power: usize,
}

Radial Duchon decoder metadata used to materialize ∂J_n[i, a] / ∂t_{n, c} from φ'(r) and φ''(r) on demand.

radial_coefficients[k, i] is the decoder coefficient that maps radial basis column k into output channel i. Polynomial-tail columns are not represented here; callers whose decoder contains a non-linear polynomial tail should provide jacobian_second_cache directly.

Fields

centers: Arc<Array2<f64>>

radial_coefficients: Arc<Array2<f64>>

length_scale: Option<f64>

nullspace_order: DuchonNullspaceOrder

power: usize

Forward hybrid spectral order s = spec.power. The Cartesian derivative engine must resolve the same (p, s, κ) the forward build_duchon_basis used, so it differentiates the exact resolved hybrid Green’s function φ_{p,s,κ} rather than a hard-coded s = 0 surrogate (issue #440).

Trait Implementations

impl Clone for IsometryDuchonRadialSource

fn clone(&self) -> IsometryDuchonRadialSource

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IsometryDuchonRadialSource

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

Formats the value using the given formatter.