Local PLSR prediction against the OSSL library

Selects the k nearest neighbours to each test spectrum in the OSSL training set and fits a local PLS regression. Like predict_ossl_mbl, this function dispatches to resemble::mbl (with a local_algorithm = "pls" setting) when the dependency is available; otherwise it falls back to the synthetic predictor.

Usage

predict_ossl_plsr_local(
  X,
  properties,
  region = "global",
  k = 100L,
  ossl_library = NULL,
  ...
)

Arguments

X

A pre-processed numeric matrix (rows = horizons, columns = wavelengths).

properties

Character vector of OSSL-supported property names.

region

One of "global", "south_america", "north_america", "europe", "africa".

k

Integer number of neighbours.

ossl_library

Optional list with the OSSL training spectra (Xr) and reference values (Yr, a data.frame keyed by properties). When NULL, the synthetic path is used.

...

Additional arguments forwarded to resemble::mbl.

Value

A data.table with the same schema as predict_ossl_mbl.