Enum InputData 

pub enum InputData {
    Transmission {
        transmission: Vec<f64>,
        uncertainty: Vec<f64>,
    },
    Counts {
        sample_counts: Vec<f64>,
        open_beam_counts: Vec<f64>,
    },
    CountsWithNuisance {
        sample_counts: Vec<f64>,
        flux: Vec<f64>,
        background: Vec<f64>,
    },
}

Typed input data — makes the data format explicit at the API boundary.

The two variants carry genuinely different data:

• Counts: raw detector counts + open beam → Poisson statistics native
• Transmission: normalized T = sample/open_beam + uncertainty → Gaussian statistics

spatial_map_typed dispatches to the correct fitting engine based on which variant is provided. This eliminates the overloaded positional arguments that caused silent misinterpretation in the old API.

Variants

Transmission

Pre-normalized transmission with Gaussian uncertainties.

Use with LM (default) or Poisson KL (opt-in for low-count T data).

Fields

transmission: Vec<f64>

Measured transmission T(E), values typically in [0, 2].

uncertainty: Vec<f64>

Per-bin uncertainty σ_T(E).

Counts

Raw detector counts with open beam reference.

Always uses Poisson KL (statistically optimal for count data). The fitting engine works directly on counts — no information-losing normalization to transmission.

Fields

sample_counts: Vec<f64>

Sample counts per energy bin.

open_beam_counts: Vec<f64>

Open-beam counts per energy bin (normalization reference).

CountsWithNuisance

Counts with pre-estimated nuisance parameters (power users).

Use when you want to inspect or override the flux estimate before fitting.

Fields

sample_counts: Vec<f64>

Sample counts per energy bin.

flux: Vec<f64>

Estimated flux spectrum (from open beam spatial average).

background: Vec<f64>

Estimated detector background spectrum.

Implementations

impl InputData

pub fn n_energies(&self) -> usize

Number of energy bins.

pub fn is_counts(&self) -> bool

Whether this is count data (Poisson-native).

Trait Implementations

impl Clone for InputData

fn clone(&self) -> InputData

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for InputData

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

Formats the value using the given formatter.