Pick channels by names.
Returns the indices of
include but not in
List of channels.
List of channels to include (if empty include all available).
This is to be treated as a set. The order of this list
is not used or maintained in
List of channels to exclude (if empty do not exclude any channel). Defaults to .
If true (default False), treat
include as an ordered list
rather than a set, and any channels from
include are missing
ch_names an error will be raised.
New in version 0.18.