Regards visual module

Dear lammps users,

I am working in carbon nanotube formation from carbon atoms and iron clusters.I am getting some sort of tubular arrangement of carbon atoms and cluster form of iron atoms.I used VMD to visualize the simulated results.How can i see the hexagonal network of carbon atoms or how can i join the carbon atoms in a hexagonal network in VMD? Is there any Method in VMD for this or i have to use any other software for this? If there is any software exists,please inform me.Please help me

Safron
thanking you.