How to dump the angle of particles?

Hello everyone, in my system, each particle has 3 freedoms, x, y and θ. It was easy to dump x and y, but how can i dump θ?

I have read manual and I did not find responding command. So how to fix it? I do not like to get it by multiplying the angular velocities by the time step.

You need to provide more information.

Which LAMMPS version? Which atom style?
What do you mean by “theta”, i.e. which kind of per-atom angle are you talking about?