getPureVariables {mdatools}

Identifies pure variables

Description

The method identifies indices of pure variables using the SIMPLISMA algorithm.

Usage

getPureVariables(D, ncomp, purevars, offset)

Arguments

D

matrix with the spectra

ncomp

number of pure components

purevars

user provided values gor pure variables (no calculation will be run in this case)

offset

offset (between 0 and 1) for calculation of parameter alpha

Value

The function returns a list with with following fields:

ncomp

number of pure components.

purvars

vector with indices for pure variables.

purityspec

matrix with purity values for each resolved components.

purity

vector with purity values for resolved components.