aug_wavelength_stretch — Wavelength Stretch

Group: Augmentation · Binding: n4m.sklearn.WavelengthStretch · C ABI: n4m_aug_wavelength_stretch_*

Description

Random wavelength-axis stretching.

Parameters

Name

Type

Default

stretch_lo

float

0.99

stretch_hi

float

1.01

wavelengths

—

None

rng

Optional[PCG64]

None

seed

int

0

Explanations

Bibliographic source

Standard spectroscopic operator — see the nirs4all preprocessing / augmentation handbook and the cited literature within the binding docstring.

Mathematical principle

Random wavelength-axis stretching.

Implementation

C ABI n4m_aug_wavelength_stretch_* in libn4m (create / apply / destroy lifecycle), wrapped by n4m.sklearn.WavelengthStretch. The same numerical kernel backs every language binding.

Usage

from n4m.sklearn import WavelengthStretch
op = WavelengthStretch()
X_transformed = op.fit_transform(X)

See also: methods index · interactive dashboard