VMD-L Mailing List

From: John Stone (johns_at_ks.uiuc.edu)
Date: Tue Jan 14 2003 - 13:02:30 CST

Dear Eric,
  Yes, you can have VMD load only a subset of the frames from
the trajectory. When you load the trajectory in the molecule
file browser, you can change the First, Last, and Stride settings
in the "Timesteps" control when you load the trajectory.
If you want to load only one of every 50 frames, set the
"Stride" value to 50. If you need to do analysis on all
of the frames in a trajectory but don't have enough memory
to load them all at once, you can use the "bigdcd" script
to process it. See the script library page for "bigdcd" here:
  http://www.ks.uiuc.edu/Research/vmd/script_library/scripts/bigdcd/

Let us know if you need more help.

Thanks,
  John Stone
  johns_at_ks.uiuc.edu

On Tue, Jan 14, 2003 at 10:46:38AM -0800, eric hu wrote:
> Hi I try to use vmd 1.8 to make a movie out of amber
> 7.0 trajectory. Since this is a long simulation, there
> are total 10,000 frames. I wonder if I can select one
> every 50 or less to make a movie with VMD. Thanks.
>
> Eric
>
>
>
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-- 
NIH Resource for Macromolecular Modeling and Bioinformatics
Beckman Institute for Advanced Science and Technology
University of Illinois, 405 N. Mathews Ave, Urbana, IL 61801
Email: johns_at_ks.uiuc.edu                 Phone: 217-244-3349              
  WWW: http://www.ks.uiuc.edu/~johns/      Fax: 217-244-6078