Hi Anyone can please tell how to index 2 or more groups using make_ndx
eg: 1 protein 12 sol 13 NA+ i tried giving >1&12, which shows that the "Group is empty" thanks in advance Parthiban _______________________________________________ gmx-users mailing list gmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users Please search the archive at http://www.gromacs.org/search before posting! Please don't post (un)subscribe requests to the list. Use the www interface or send it to gmx-users-requ...@gromacs.org. Can't post? Read http://www.gromacs.org/mailing_lists/users.php