Just to precise ::

Coordset #1 -1,1,-1
  
Would this play the movie backwards from the last  to the first frame ? ( so in this case I do not precise explicitly the number of the last frame) 

Alternatively 

Coordset #1 1,-1,1

Plays the trajectory from the beginning to the end , doesn’t it ?

Many thanks in advance !! 

Le ven. 2 févr. 2024 à 17:14, Elaine Meng <meng@cgl.ucsf.edu> a écrit :
Yes, you can simply use the "coordset" command to play the trajectory in reverse by specifying a negative step, e.g.

coordset #4 10000,1,-1

where as the help page says, #4 is the trajectory model number, 10000 is the trajectory frame to start, 1 is the trajectory frame to end, -1 is the step.  Please see the page:

<https://rbvi.ucsf.edu/chimerax/docs/user/commands/coordset.html>

I hope this helps,
Elaine
-----
Elaine C. Meng, Ph.D.                       
UCSF Chimera(X) team
Resource for Biocomputing, Visualization, and Informatics
Department of Pharmaceutical Chemistry
University of California, San Francisco


> On Feb 2, 2024, at 5:40 AM, Enrico Martinez via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:
>
> One more question about movie making in Chimera-X
>
> Is there some possibility to record molecular movie in the reverse
> order from a given multi-model pdb file ?
> E.g. having 1000 models, I would like to record it from 1000,999,998 ... 1 .
>
> Many thanks in advance
>
> Enrico