[gmx-users] free energy and UB term

[Mark Abraham]

On 16/12/2011 7:22 AM, lq z wrote:
> Dear GMXers,
>
> I'm trying to manually add two sets of Urey-Bradley terms to the 
> topology file (in [angle] entry with type 5). However, it seems it is 
> not allowed. I got the following error:
>
> Incorrect number of parameters - found 8, expected 4 or 4 for U-B.
>
> Is it true that I can't do this in gromacs? Thanks.

You can add any interaction you like. What you can't get is useful help 
if you don't show what you've tried. :-)

Mark