Hey Victor, check http://manual.gromacs.org/current/programs/gmx-trjconv.html you probably need -ur and -pbc
Cheers, Max On Jun 1, 2015, at 1:45 PM, Victor Ma <victordsmag...@gmail.com<mailto:victordsmag...@gmail.com>> wrote: Hello Justin, Thanks a lot for the quick response. So I first load the .gro file from the previous step which is my initial coordinate file, I then loaded the .trr file. But I am getting some wired image. Please see attachment. Thank you. Victor -- 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<mailto:gmx-users-requ...@gromacs.org>. -- 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.