Improper_coeffs

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1

Hi everybody
I made my data file with TOPOTOOLS(VMD,PACKMOL),and it guessed
improper coeffs of molecule,I used the Opls/AA force field that its
improper_style is COSINE or HARMONIC that I input harmonic,but when I
run I faced with this error "incorrect args for improper coefficients"
This is my improper coefficients and a section of inpute file :

Improper Coeffs

1 0.000 2.000 0.000 0.0000 # CA-CR-NA-CW
2 0.000 2.000 0.000 0.000 # CM-CR-NA-CW
3 0.000 2.2000 0.0000 0.0000 # CW-HW-CW-NA

bond_style harmonic
angle_style harmonic
dihedral_style opls
improper_style harmonic

I used the all improper_style in lammps manual,but it was useless,
please guide me
THANKS

2

Same question, same answer.

3

Same question, same answer.

Or more specifically, you have to read the documentation and provide coeff statements, that are consistent with what the documentation says and not just try things.