[AMBER] rotational diffusion via cpptraj

From: Vijay Manickam Achari <vjrajamany.yahoo.com>
Date: Fri, 29 Mar 2013 11:11:12 +0000 (GMT)

Dear Sir,

I would like to calculate 

The script I used to calculation diffusion is as blow

#!/bin/bash

TRAJfolder="/home/vijay/Simulation-Folder-Feb2013/TRAJECTORY-thermo-system/malto-thermo-traj"


cpptraj $TRAJfolder/malto-THERMO.top  << EOF


trajin  $TRAJfolder/malto-thermo.set11.traj

trajin  $TRAJfolder/malto-thermo.set12.traj
trajin  $TRAJfolder/malto-thermo.set13.traj
trajin  $TRAJfolder/malto-thermo.set14.traj
trajin  $TRAJfolder/malto-thermo.set15.traj
trajin  $TRAJfolder/malto-thermo.set16.traj
trajin  $TRAJfolder/malto-thermo.set17.traj
trajin  $TRAJfolder/malto-thermo.set18.traj
trajin  $TRAJfolder/malto-thermo.set19.traj
trajin  $TRAJfolder/malto-thermo.set20.traj

diffusion .DDM 5.0 average diff_malto_thermo.dat
exit $?

EOF

********************************************************************
Now I am  trying to calculate rotational diffusion for my lipids in bilayer, where C2 and C5 would be my vector parallel to bilayer surface. (my system is sugar - glucose) 

I understand that I need to modify the above script to run my rotational calculation by defining the vectors. But I feel like lost in declaring the vectors.

Could someone help me here?

Thank you in advance.
Vijay 


 
Vijay Manickam Achari
(Phd Student c/o Prof Rauzah Hashim)
Chemistry Department,
University of Malaya,
Malaysia
vjramana.gmail.com
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Received on Fri Mar 29 2013 - 04:30:02 PDT
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