[gmx-users] negative values of force

[Samrat Pal]

Dear All,
              I have pulled a protein by keeping n-terminus fixed and pulling 
the c-terminus. I tried to extract the force.xvg profile from the .trr file by 
the following command -

g_traj -f traj.trr -s pull.tpr -of force.xvg

But in the force.xvg profile I am getting both positive and negative values of 
force. What does it mean? Please suggest.
Samrat 



      
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://maillist.sys.kth.se/pipermail/gromacs.org_gmx-users/attachments/20100814/4b26d38b/attachment.html>