From: Josh Vermaas (
Date: Thu Sep 17 2015 - 18:26:37 CDT

I'm reasonably sure the default file types for each plugin are specified
in the molfile plugins themselves (at least they are in the C-code!),
and so would at a minimum require a recompilation of those plugins. I'd
imagine the path of least resistance is to either rename the files
(filenames are mostly arbitrary, right?) or always use the options to
force the use of the dcd plugin.

-Josh Vermaas

On 09/17/2015 05:35 PM, Gianluca Interlandi wrote:
> Dear VMD list,
> I have a bunch of DCD trajectory files saved with the extension .trj
> instead of .dcd. I know that in order to read them with VMD I can
> explicitly specify the type with "-dcd". However, I wonder whether
> there is a way to permanently tell VMD that a .trj extension needs to
> be read with the DCD plugin (I am aware that this would conflict with
> the gromacs .trj file type).
> Are the filetype associations coded in the VMD C routines or in some
> TCL script that I could easily modify?
> Thanks,
> Gianluca
> -----------------------------------------------------
> Gianluca Interlandi, PhD
> +1 (206) 685 4435
> Research Assistant Professor at the Department of Bioengineering
> at the University of Washington, Seattle WA U.S.A.
> -----------------------------------------------------