Function _check_reference

mne/minimum_norm/inverse.py:887–901

Check for EEG ref.

(inst, ch_names=None)

def _check_reference(inst, ch_names=None):
    """Check for EEG ref."""
    info = inst.info
    if ch_names is not None:
        picks = [
            ci for ci, ch_name in enumerate(info["ch_names"]) if ch_name in ch_names
        ]
        info = pick_info(info, sel=picks)
    if _needs_eeg_average_ref_proj(info):
        raise ValueError(
            "EEG average reference (using a projector) is mandatory for "
            "modeling, use the method set_eeg_reference(projection=True)"
        )
    if _electrode_types(info) and info.get("custom_ref_applied", False):
        raise ValueError("Custom EEG reference is not allowed for inverse modeling.")


def _subject_from_inverse(inverse_operator):