How to change periodic boundary condition to non periodic?

Hi all,

I have a polymer simulation box that I have prepared with a specific density and I want to use its data file for another stage of my work. This data file has a periodic boundary condition in all 3 axes and I want to output the data file with a non-periodic boundary condition to be able to use it for the next stage of my work. Can anyone help me how to do that?

Thank you,

Did you mean to post this question in the LAMMPS forum?