spectrochempy.analysis.constraints.Closure

class Closure(profile, components=None, target=1.0)[source]

Closure (constant sum) constraint.

States that the selected components of a profile must sum to a target value across the constrained axis (typically the concentration rows summing to 1.0).

Parameters:

profile (str) – "C" (concentrations) or "St" (spectra).
components (list[int], optional) – Component indices included in the closure. None (default) means “all components”.
target (float, optional) – Target sum for the selected components. Default is 1.0.

Examples

>>> from spectrochempy import Closure
>>> Closure("C")
Closure(profile='C', components=None, target=1.0)
>>> Closure("C", components=[0, 1], target=100.0)
Closure(profile='C', components=[0, 1], target=100.0)

Attributes Summary

`components`	Components in the closure (`None` = all).
`name`	Short human-readable name of the constraint family.
`profile`	Canonical profile identifier (`"C"` or `"St"`).
`target`	Target sum for the selected components.

Attributes Documentation

components

Components in the closure (None = all).

Type:: list[int] or None

name

Short human-readable name of the constraint family.

Type:: str

profile

Canonical profile identifier ("C" or "St").

Type:: str

target

Target sum for the selected components.

Type:: float

Examples using spectrochempy.analysis.constraints.Closure