[gmx-users] question on dihedrals propers func 3 and impropers func 1

[Alan]

Which version of ACPYPE are you using? Please, get the latest here:
https://github.com/alanwilter/acpype

Check also about option:

-z, --gmx4            write RB dihedrals old GMX 4.0

Thanks for using ACPYPE!

Alan

On Sat, 1 Feb 2020 at 18:21, Lei Qian <tuk04130 at temple.edu> wrote:

> Dear users,
>
> Could I ask a question on dihedrals func types? Thanks!
>
> I used acpype to convert prmtop file and inpcrd file into gromacs files.
> However, in new generated top file,
> The dihedrals propers func is 3. and The dihedrals impropers func is 1.
>
> These two func types are different from propers func 9 and impropers func
> 4.
> (func type 9 and func type 4 can be found in Gromacs documents).
>
> Could I ask the meaning of func type 3 and func type 1 ?
>
> Thanks!
> Lei
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