[gmx-users] Re: how to do force analysis using trajectory file?

Pim Schravendijk schraven at mpip-mainz.mpg.de
Tue Jul 13 10:04:10 CEST 2004

> From: Rui Qiao <gromacs2004 at yahoo.com>
> Subject: [gmx-users] how to do force analysis using trajectory file?
> Dear Gromacs users:
>    I am interested in analyzing the force acting on
> some atoms in my system. I have already got the
> trajectory of the system. Is there a tool in Gromacs
> that read in the trajectory and compute the force
> acting on each atoms?
>    Thanks a lot.
>    sincerely,
>    Rui

Just enter a value for nstfout and it will output the forces to the .trj 
file during the run. You can trjconv it to .gro afterwards to get it as  
ascii and run your analysis on it.

Greetings, Pim

Pim Schravendijk - PhD Student
Max Planck Institute for Polymer Research

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