[AMBER] Reading Frames from Trajectory File

From: Catherine Jenifer Rajam Rajendran <catrajen.iu.edu>
Date: Mon, 3 Feb 2020 13:12:50 -0500

Dear Amber Users,

* When I read my MDCRD file in CPPTRAJ, it shows that it's reading 18 of
1750 frames.

INPUT TRAJECTORIES:
 0: 'prod_noW.mdcrd' is an AMBER trajectory, Parm native_nowat.top (reading
18 of 1750)
  Coordinate processing will occur on 18 frames.

My mdcrd file actually contains 245,755 frames as per the following email:
http://archive.ambermd.org/201107/0414.html

* When I TRAJIN my mdcrd file, I got the following warning:

Warning: Trajectory only contains box lengths and topology has no box info.
Warning: To set box angles for topology use the 'parmbox' command.

So, apparently my topology file doesn't have box information but my
trajectory file has box coordinates. Should I skip reading the box values
from trajectory file? If so, Can can I do it. And, I would like to know if
there is a way to understand why it reads less number of frames. Can
someone help me with this?

Thanks,
Catherine
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Received on Mon Feb 03 2020 - 10:30:03 PST
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