From: Michael Doig (
Date: Wed Oct 01 2014 - 07:25:04 CDT


I quite often make movies containing multiple viewpoints, from the same
trajectory file. To do this I load in the same trajectory however many
times I need to, loading into a new molecule each time, and then move
the different "molecules" (trajectories), create the representations
required, and then generate a single movie containing all the different
required viewpoints. (i.e. a top down view, a side on view, one showing
just one molecule type etc....) One issue with this is the very large
amount of memory sometimes required , if I have to load the same large
trajectory into memory a number of times (sometimes between 4 - 8 times).

I am wondering if there is any better way of doing this, such as loading
the trajectory in once, and then creating a new "molecule" by cloning
(or linking) to the first molecule. This would allow me to have multiple
viewpoints, without having the same trajectory file loaded into memory
multiple times.

I use LAMMPS trajectory files, if that makes any difference.

Hope this is clear.

Thanks for your help,

The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.