how to compute the number atom displacement

i have problem to compute atom displacement.i sand input file to you plz help me what do i do?i want to compute atom displacement from force that on the Zr.the force is on the one atoms and i want number of displacement.

in.Zr (3.44 KB)

Zr_1.eam.fs (745 KB)

There is a compute displace/atom. I don’t know what
it has to do with force on an atom. Nor do I know
what you mean by “number of displacement”.