[gmx-users] radial pmf

[Chris Neale]

Perhaps you could make it work using distance constraints (p116 of 
manual-3.3) with constraint_direction = 0. 0. 0.

If you do get something running with either this or a modified version 
of gromacs, I would be very interested to hear the details.

>i'd like to calculate the pmf as a function of the
>radial distance between 2 groups by umbrella sampling.
>it looks like this is not currently possible.