'Morph source estimate between subjects using a precomputed matrix.
Parameters
subject_to : string
Name of the subject on which to morph as named in the SUBJECTS_DIR.
vertices_to : list of array of int
The vertices on the destination subject\'s brain.
morph_mat : sparse matrix
The morphing matrix, usually from compute_morph_matrix.
subject_from : string | None
Name of the original subject as named in the SUBJECTS_DIR.
If None, self.subject will be used.
Returns
stc_to : SourceEstimate
Source estimate for the destination subject.'

def morph_precomputed(self, subject_to, vertices_to, morph_mat, subject_from=None):

    subject_from = _check_subject(self.subject, subject_from)
    return morph_data_precomputed(subject_from, subject_to, self, vertices_to, morph_mat)
