[gmx-users] trjconv question

[Li Xiaoyi]

Dear Gromacs users:

Did you met this problems on trjconv? When I use:
trjconv -f -s -n -dump 0 -o 0.pdb
I am asked to select a group. But there is nothing in my 0.pdb file at
last. Also
trjconv -f -s -n atom.ndx -o atom1.pdb

There is nothing in the atom1.pdb.

I use Gromacs 3.2 version.

Regards,
Xiaoyi