How to recognize HCP structure and dislocation using ovito?

[Ying_Zhang]

Sorry, can you show more details about the operation?

I confused:

1. Why did you choose the “ParticleIndex == 0 || ParticleIndex == 1 || ParticleIndex == 5 || ParticleIndex == 6” atoms in the orientation system? How can I choose atoms when I change the orientation (such as H1=[11-2-3], H2=[1-100], H3=[5 5 -10 6])

2. When I type the command into Expression Selection modifier, and then how to do detect the hexagonal phase, and further how to operate in the supercell and dislocation structure?

Thanks for your patience.