[gmx-users] g_density and g_potential for DMPC bilayer

[Xavier Periole]

dear Andrey,

you can recenter your bilayer using trjconv -center -n index.ndx
in the index you'll should have a group been your bliayer. 

For the orientation of the head groups I have a program that
determines the angle of the PN vector (or what ever pair of atoms)
relative to the z axis. That is probably what you need. So if you 
want it, tell me.

Xavier

----------------------------------------
Xavier Periole, Ph.D.
Chemistry Dept. 
City College of New York (CUNY)
138th St. and Couvent Av.
New York, NY 10010
------------------------------------------