Hi, On Wednesday, 16. July 2008, minnale wrote: > Hi Users, > I want to do analysis of g_density of lipidbilayer so how can I select po4 > and N(CH3)3 groups seperately by using make_ndx from popc. Can anyone tell > me detail with which options use? > I have checked in archives that create sn1.ndx and sn2.ndx files but i > didnt get celarly. Thanks in advance
Take first a look on your .gro file and identify the atoms you want to select. try something like: make_ndx -f your_file.gro a P* this should select all atoms with P in your system., it also depends on the used force field. Also "h" prints out some inforamation about the selection choices. greetings, Florian -- ------------------------------------------------------------------------------- Florian Haberl Computer-Chemie-Centrum Universitaet Erlangen/ Nuernberg Naegelsbachstr 25 D-91052 Erlangen Telephone: +49(0) − 9131 − 85 26573 Mailto: florian.haberl AT chemie.uni-erlangen.de ------------------------------------------------------------------------------- _______________________________________________ gmx-users mailing list gmx-users@gromacs.org http://www.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 [EMAIL PROTECTED] Can't post? Read http://www.gromacs.org/mailing_lists/users.php