[Chimera-users] Deleting data contained in a session

David Sáez davidsaez at udec.cl
Mon Apr 29 07:53:51 PDT 2019

Dear Chimera experts:

I have saved multiple sessions of molecular dynamics trajectories. Each
session is about 5MB.

Nevertheless, one of those files is huge, about 120MB. Checking the
differences, I noticed that one of the  files contained in the session,
which normally is a one-frame .pdb, in the large case corresponds to a .nc
file, a whole trajectory containing a large number of frames. I did not
notice this before because when I opened the .py file, the MD movie box is
not shown.

As I am only interested in the currently displayed frame of this .nc file,
is there a way to delete the additional frames? Some command line trick
that would allow me to get rid of the uninteresting frames, and decrease
the file size, without having to re-make the whole session again?

My most immediate concern is that the file size is too large to be uploaded
to a journal online platform.

Any help is appreciated,

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