This is what one would call a serious macro. Select density from 2 molecules and from 2 sets of atoms. The screen centre is determined by Id'ing an atom. IMPORTANT: make sure it's from the reference molecule A The molecules are defined by symbols $mol_a and $mol_b the maps by $map_a and $map_b.
centre_id ! Wait for an ID message "Make sure its an atom from molecule A" Wait_id message "Start contouring B" copy save_centre .active_centre rot_trans_db .active_centre .lsq_rt_a_to_b .active_centre map_file $map_b map_obj mapb map_par 9. 9. 9. 1.5 light_blue .5 .1 1 map_act map_draw rot_tran_obj .lsq_rt_b_to_a mapb mol $mol_b obj sphb spher 10. end ! Now do the map from molecule A message "Start contouring A" copy .active_centre save_centre map_file $map_a map_obj mapa map_par 9. 9. 9. 1.5 red .5 .1 1 map_act map_draw mol $mol_a obj spha spher 10. end lsq_obj b_to_a sphb message " "