> ok... Let me explain:
> I've got a structure at time point 0. This is the reference. I want to
> see,
> how it changes through time, so I want it to be rendered throughout the
> animation.

OK, I understand.

> I have a simulation, and from that I create a pdb file, that contains many
> models, each representing a timepoint. And when I say many models, I mean
> e.g. 1000, or more.

OK

> So even when the system is very small (only 30 aa) the pdb file has a
> considerable size. (~20% compressed...) so I don't really want to double
> it
> up, if not necessary.

OK

> under "swim away" I mean that during md, the protein rotates, and shifts,
> but that's not really important.

Yes, I understand that things will move.

> basically I want to fake multi chain pdb files by loading separate ones in
> the same time...

Cannot be done.

If you are going to load both chains at the same time, and they are
logically associated, then it seems to me that they *should* be in the
same file.

Your size limitation is going to be the number of atoms that are in
memory. Your performance limitation is (basically) the number of atoms
that are rendered.

Putting it in two files:
 - would not be any faster to load
 - would mean that you need to keep track of twice as many files

Most importantly:
 - it does not work today
 - it is not easy to implement

These files are too big for you to look at by hand ... Why do you care how
big they are?

Let me know if I am misunderstanding something.



Miguel



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