From: M K (
Date: Mon Feb 22 2016 - 17:54:14 CST

Thanks for the reply.
Yes, VMD does not do that. What I meant was by the user; for example, an
unintentional scrolling the wheel button of the mouse. I want to fix the
zoom level/percentage throughout the trajectory.
I think you are right: "an orthographic projection so that size/distance
relationships are preserved".
So, in the orthographic output image, the same atom with VDW style will
always look the same size, for instance.
How can I apply this setting?

On Tue, Feb 23, 2016 at 2:51 AM, John Stone <> wrote:

> Hi,
> It's not entirely clear what you're talking about when you refer to
> "unwanted zooming". VMD doesn't do any time-varying zooming
> by itself as a trajectory plays. Perhaps what you're after is
> to use an orthographic projection so that size/distance relationships
> are preserved throughout a trajectory movie regardless how close
> parts of the structure are to the camera?
> Cheers,
> John Stone
> On Mon, Feb 22, 2016 at 10:21:36PM +1100, M K wrote:
> > Hi all,
> > I want to export some images from vmd through the trajectory.
> > How can I define the percentage of zoom, so that the molecule in all
> the
> > images is of the same size (and neutralize any unwanted zooming, for
> > example).
> > Thanks
> --
> NIH Center for Macromolecular Modeling and Bioinformatics
> Beckman Institute for Advanced Science and Technology
> University of Illinois, 405 N. Mathews Ave, Urbana, IL 61801
> Phone: 217-244-3349