//! Kriging models for spatial interpolation and prevalence surfaces.
//!
//! - **Ordinary kriging** ([`ordinary`]): [`crate::OrdinaryKrigingModel`] and [`crate::Prediction`] for
//! interpolating a continuous spatial field from point observations.
//! - **Binomial kriging** ([`binomial`]): [`crate::BinomialKrigingModel`], [`crate::BinomialObservation`],
//! and related types for prevalence surfaces. The default path is empirical-Bayes
//! logit + ordinary kriging. [`crate::HeteroBinomialFit`] documents an experimental
//! heteroskedastic variant.