Get combined data of hemi list
Arguments
- hemi_list
named list, can have entries 'lh' and/or 'rh', see
hemilist
Value
the data combined with c, or NULL if both entries are NULL.
See also
Other hemilist functions:
hemilist(),
hemilist.derive.hemi(),
hemilist.from.prefixed.list(),
hemilist.unwrap(),
hemilist.wrap(),
is.hemilist()