ewoksxas.fit.peak_fit.Baseline

class ewoksxas.fit.peak_fit.Baseline(label, theory_name)

Bases: Enum

A baseline option and the silx background theory it maps to.

The background is fitted by silx together with the peaks. STRIP and SNIP are silx’s iterative peak-stripping backgrounds, suited to multi-peak spectra; their filter settings come from the fit configuration (see PeakModel).

Parameters:

• label (str)

• theory_name (str)

LINEAR = ('linear', 'Linear')

NONE = ('none', 'No Background')

OFFSET = ('offset', 'Constant')

SNIP = ('snip', 'Snip')

STRIP = ('strip', 'Strip')

classmethod from_label(value)

Resolve a label string (or pass a member through) to a Baseline.

Raises:

ValueError: If the label does not match any baseline.

Parameters:

value (str | Baseline)

Return type:

Baseline

classmethod from_theory_name(theory_name)

Resolve a silx background name (e.g. "Constant") to a Baseline.

Raises:

ValueError: If no baseline maps to the background name.

Parameters:

theory_name (str)

Return type:

Baseline