spectrochempy.analysis.constraints.Selectivity

class Selectivity(profile, region, component, blocks=None)[source]

Selectivity constraint.

States that each selected component is the only one present on a given region of the constrained axis. This encodes the unimodality-of-presence assumption used in many hard-modeling workflows (e.g. one species dominates a portion of the elution window).

Parameters

profile (str) – "C" (concentrations) or "St" (spectra).
region (tuple[int, int]) – (start, stop) of the half-open region on which the constraint applies. stop must be strictly greater than start.
component (int) – Index of the single component that must be the sole component on the region.

Examples

>>> from spectrochempy import Selectivity
>>> Selectivity("C", region=(0, 5), component=0)
Selectivity(profile='C', region=(0, 5), component=0)

Attributes Summary

`blocks`	Block indices for augmented data (`None` means all blocks).
`component`	Index of the sole component present on the region.
`name`	Short human-readable name of the constraint family.
`profile`	Canonical profile identifier (`"C"` or `"St"`).
`region`	Half-open `(start, stop)` region.

Attributes Documentation

blocks

Block indices for augmented data (None means all blocks).

Type: list[int] or None

component

Index of the sole component present on the region.

Type: int

name

Short human-readable name of the constraint family.

Type: str

profile

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

Type: str

region

Half-open (start, stop) region.

Type: tuple[int, int]

Examples using spectrochempy.analysis.constraints.Selectivity