can you try with only one frame
trajin 1bna_c_wat_md3_NVT.mdcrd 1 1
trajout md3_new.pdb
Hai
On Tue, Apr 11, 2017 at 3:29 PM, James Kress <jimkress_58.kressworks.org>
wrote:
> I create a pdb trajectory file as follows:
>
> [root.t7910 1bna_capped]# cpptraj
>
> CPPTRAJ: Trajectory Analysis. V16.16
> ___ ___ ___ ___
> | \/ | \/ | \/ |
> _|_/\_|_/\_|_/\_|_
>
> | Date/time: 04/11/17 13:55:49
> | Available memory: 44.820 GB
>
> Loading previous history from log 'cpptraj.log'
> > parm 1bna_c_wat.prmtop
> Reading '1bna_c_wat.prmtop' as Amber Topology
> > trajin 1bna_c_wat_md3_NVT.mdcrd
> Reading '1bna_c_wat_md3_NVT.mdcrd' as Amber NetCDF
> > trajout md3.pdb
> Writing 'md3.pdb' as PDB
> > run
> ---------- RUN BEGIN -------------------------------------------------
>
> PARAMETER FILES (1 total):
> 0: 1bna_c_wat.prmtop, 20022 atoms, 4832 res, box: Orthogonal, 4806 mol,
> 4778 solvent
>
> INPUT TRAJECTORIES (1 total):
> 0: '1bna_c_wat_md3_NVT.mdcrd' is a NetCDF AMBER trajectory, Parm
> 1bna_c_wat.prmtop (Orthogonal box) (reading 1000 of 1000)
> Coordinate processing will occur on 1000 frames.
>
> OUTPUT TRAJECTORIES (1 total):
> 'md3.pdb' (1000 frames) is a PDB file
>
> BEGIN TRAJECTORY PROCESSING:
> Warning: For PDB with MODEL, box coords for first frame only will be
> written to CRYST1.
> Warning: No PDB space group specified.
> ----- 1bna_c_wat_md3_NVT.mdcrd (1-1000, 1) -----
> 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Complete.
>
> Read 1000 frames and processed 1000 frames.
> TIME: Avg. throughput= 13.4921 frames / second.
>
> ACTION OUTPUT:
>
> RUN TIMING:
> TIME: Init : 0.0001 s ( 0.00%)
> TIME: Trajectory Process : 74.1176 s (100.00%)
> TIME: Action Post : 0.0000 s ( 0.00%)
> TIME: Analysis : 0.0000 s ( 0.00%)
> TIME: Data File Write : 0.0000 s ( 0.00%)
> TIME: Other : 0.0002 s ( 0.00%)
> TIME: Run Total 74.1179 s
> ---------- RUN END ---------------------------------------------------
> > exit
> ------------------------------------------------------------
> --------------------
> To cite CPPTRAJ use:
> Daniel R. Roe and Thomas E. Cheatham, III, "PTRAJ and CPPTRAJ: Software for
> Processing and Analysis of Molecular Dynamics Trajectory Data". J. Chem.
> Theory Comput., 2013, 9 (7), pp 3084-3095.
>
>
> I then try to read the pdb trajectory file I just created and get an error:
>
> [root.t7910 1bna_capped]# cpptraj
>
> CPPTRAJ: Trajectory Analysis. V16.16
> ___ ___ ___ ___
> | \/ | \/ | \/ |
> _|_/\_|_/\_|_/\_|_
>
> | Date/time: 04/11/17 14:51:21
> | Available memory: 44.084 GB
>
> Loading previous history from log 'cpptraj.log'
> > parm 1bna_c_wat.prmtop
> Reading '1bna_c_wat.prmtop' as Amber Topology
> > trajin md3.pdb
> Reading 'md3.pdb' as PDB
> Read CRYST1 info from PDB: a=46.553 b=46.546 c=69.43 alpha=90
> beta=90 gamma=90
> Warning: PDB md3.pdb: Reading frame 762, got 7258 atoms, expected 20022.
> Warning: Only using frames 1-761
> Warning: In PDB file md3.pdb: 14556 name mismatches with parm
> 1bna_c_wat.prmtop.
> > exit
> ------------------------------------------------------------
> --------------------
> To cite CPPTRAJ use:
> Daniel R. Roe and Thomas E. Cheatham, III, "PTRAJ and CPPTRAJ: Software for
> Processing and Analysis of Molecular Dynamics Trajectory Data". J. Chem.
> Theory Comput., 2013, 9 (7), pp 3084-3095.
>
>
> I can visualize all 1000 frames in the pdb file just fine with VMD and
> they look OK. I also visually inspected the pdb file (looking specifically
> in the area of frame 762) and could find no obvious errors.
>
> What did I do wrong? I searched the AMBER archives (and googled the web)
> and could not find an answer.
>
> Thanks for any help.
>
> Jim Kress
>
>
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Received on Tue Apr 11 2017 - 13:30:02 PDT
