Re: [AMBER] convert trajectories files in AMBER

From: Charles-Alexandre Mattelaer <>
Date: Fri, 13 Jul 2018 19:43:34 +0200

Dear Chhaya

Check the cpptraj manual. You can use trajin for this following the syntax

Trajin start stop offset

Set the offset to a value of 10 or 100 or whatever you think is appropriate
and the trajout will write every 10th or 100th frame to a new trajectory.

Btw usually the ".out" is the file containing energy info etc and not the

Kind regards

Charles-Alexandre Mattelaer

Op vr 13 jul. 2018 19:38 schreef Chhaya Singh <>:

> I have a file md.out which basically saves all the information after every
> 0.1ps but I want to generate a file having information at an interval of
> 1ps or 10 ps .is there any way to save every 10th or 100th frame using
> cpptraj?
> my trajectories is in NetCDF(.nc) format.
> I want to do this because when I load this files in vmd it takes a lot of
> time. so I want short time duration so that I can load my files fastly.
> is there a way to do all this without running any new simulations.
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Received on Fri Jul 13 2018 - 11:00:02 PDT
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