Hi ! I want to use g_sgangle to find distance between two groups (each group includes 3 atoms). I use this command: g_sgangle -s md_1.tpr -f md_1_noPBC.xtc -n index.ndx -oa 12_angle.xvg -od 12_dist.xvg but i got this error Fatal error: Error: no groups in indexfile
my index file: [ G3 ] 76 81 85 [ G4 ] 110 115 119 Best Regards, Amir -- 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/Support/Mailing_Lists/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/Support/Mailing_Lists