Hi Daniel, Coordset is for replaying a trajectory. If your series of structures is indeed a trajectory, it is not in the form of submodels #3.1-51 (which could all be shown concurrently) but instead just #3 where only one trajectory frame can be shown at a time. I.e., if "coordset" works to replay your trajectory, then you just need to have #3 in your perframe command, not #3.$1 -- I'm guessing that is the problem. If your series of structures is not a trajectory but a series of submodels, it is not a trajectory, and instead of "coordset" you would need to play through it with "mseries": coordset: <https://rbvi.ucsf.edu/chimerax/docs/user/commands/coordset.html> mseries: <https://rbvi.ucsf.edu/chimerax/docs/user/commands/mseries.html> trajectories and model series: <https://rbvi.ucsf.edu/chimerax/docs/user/trajectories.html> I hope this helps, Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco

On Jul 6, 2022, at 12:37 PM, Daniel VillanuevaAvalos via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:

Hello, I am trying to export a sequence of objs for a morphing animation that I want to use in Houdini FX. The objs do export but they are apparently empty. This is what I am typing on the command line:

perframe "save F:/Caltech/CALTECH/04_Growth/4_04_Enzyme_Filaments/objs/from_chimera/AdhE_dimers_morph_01/model$1.obj model #3.$1" ; coordset #3 1,51; wait 51; ~perframe

Am I missing something? Thank you, Daniel.