mne.
pick_channels_cov
Pick channels from covariance matrix.
orig : Covariance
A covariance.
include : list of string, (optional)
List of channels to include (if empty, include all available).
exclude : list of string, (optional) | ‘bads’
Channels to exclude (if empty, do not exclude any). Defaults to ‘bads’.
res : dict
Covariance solution restricted to selected channels.