mne.preprocessing.nirs.beer_lambert_law# mne.preprocessing.nirs.beer_lambert_law(raw, ppf=6.0)[source]# Convert NIRS optical density data to haemoglobin concentration. Parameters: rawinstance of RawThe optical density data. ppftuple | floatThe partial pathlength factors for each wavelength. Changed in version 1.7: Support for different factors for the two wavelengths. Returns: rawinstance of RawThe modified raw instance.