Dear Jkrieger Thanks for your attention.
I have index file containing 2 group which are my interest. Unfortunately, I am beginner in scripting and I have no long time. I should do this analysis as soon as possible. Please if you write such a script, send me it. Is g_rdf -cn appropriate for my case? Best wishes -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.