[lammps-users] How to fix the positions of some atoms ?

Dear lammps users,

How to fix the positions of some selected atoms during a MD run ?
Does the current lammps release support such setting ?
Thanks.

Xiandong Liu

Set their v to 0 (velocity command) and their force to 0 (setforce command).
Or just don't include them in the group of atoms being integrated.

Steve