chemometrics.mcr.constraint.Nonneg¶
- class chemometrics.mcr.constraint.Nonneg(copy=False)¶
Bases:
chemometrics.mcr._constraint.Constraint
Non-negativity constraint. All negative entries made 0.
The non-negativity constraint is typically used if a negative result would be unphysical or at least highly unlikely. Typical examples: absolute concentrations, absorption spectra.
- Parameters
copy (bool) – Make copy of input data, A; otherwise, overwrite (if mutable)
- __init__(copy=False)¶
A must be non-negative
Methods
__init__
([copy])A must be non-negative
transform
(A)Apply nonnegative constraint
- transform(A)¶
Apply nonnegative constraint