[Chimera-users] focus over N frames

Elaine Meng meng at cgl.ucsf.edu
Wed Mar 27 09:47:39 PDT 2019

Hi Elena,
If you mean you want to move to that position gradually, you have to save that position beforehand and then use the “reset” command to gradually move from the current position to that previously saved position.  You can save several different positions with different names using the “savepos” command and then use “reset” to move between them.  Thus your starting position could also have been saved previously.   For example, commands [and explanations]:

savepos p1
[… now move or rotate the structure…]
savepos p2
reset p1
[… that would go instantly to position p1 that you saved first ]
reset p2 40
[… that would move gradually over 40 frames from the current position, which is p1, to position p2 ]


Or instead of “reset” to move to a single position at a time, you can use the “fly” command to visit a series of several positions more smoothly.

See the list of movie-related commands for all kinds of things that can be done over multiple frames:

There are several examples of movie command files that script motions:

I hope this helps,
Elaine C. Meng, Ph.D.
UCSF Chimera(X) team
Department of Pharmaceutical Chemistry
University of California, San Francisco

> On Mar 26, 2019, at 7:24 PM, Elena Zehr <zehr.elena at gmail.com> wrote:
> Hello, 
> I wish to use "focus" command in a movie script. I focus on an atom range as following
> focus :4-6 at CA
> I wish to bring the atoms in focus over N frames. How do I do this?
> Many thanks,
> Elena

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