Dear Lina Very thanks for your time and attention.
Initial command was : g_dist -f *.trr -s *.tpr -n *.ndx -o dist.xvg -dist 0.5 After running following command the problem was solved : g_dist -f *.trr -s *.tpr -n *.ndx -o dist.xvg -dist 5 t: 17008 6773 NA 21881 NA 3.05534 (nm) t: 17008 6774 NA 21882 NA 3.27381 (nm) t: 17008 6775 NA 21883 NA 2.44312 (nm) t: 17008 6776 NA 21884 NA 2.0746 (nm) Last frame 2 time 17008.000 Now, I have a general question. In some of gromacs tools, there is distance parameter. I want to know what is dimension of the distance in gromacs? nm or A? Best regards -- 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