This integer vector provides the mapping between pitch-class chords ("pc_chord" objects) and pitch-class sets ("pc_set" objects). This can help computational efficiency in some situations.
If i is the integer corresponding to an encoded pitch-class chord,
then the corresponding encoded pitch-class set is
equal to the ith element of this vector.
i <- encode(pc_chord(c(4, 0, 7))) j <- pc_chord_id_to_pc_set_id_map[i] decode(coded_vec(j, "pc_set"))[[1]]#> Pitch-class set: 0 4 7