Re: [gmx-users] control parameter on the Lennard-Jones interactions

2019-05-23 Thread battistia
Dear Mark, many thanks for your suggestions! Indeed adding of the [ pairtypes ] section seems to solve. Can I asky you which is the difference between [ paitypes ] and [ nonbond_params ] for intramolecular pair interactions? they look very similar: [ pairtypes ] ; i j func V(c6) W(c12)

Re: [gmx-users] control parameter on the Lennard-Jones interactions

2019-05-21 Thread Mark Abraham
Hi, This should be possible, e.g. with [pairs] on those particular atoms, or perhaps with tabulated non-bonded interactions (unfortunately only available with the group scheme) Mark On Thu, 16 May 2019 at 07:25, wrote: > > Dear gromacs members, > > I would ask you if in gromacs is possible to

Re: [gmx-users] control parameter on the Lennard-Jones interactions

2019-05-20 Thread Dallas Warren
Possibly http://manual.gromacs.org/documentation/current/reference-manual/special/tabulated-interaction-functions.html ? Catch ya, Dr. Dallas Warren Drug Delivery, Disposition and Dynamics Monash Institute of Pharmaceutical Sciences, Monash University 381 Royal Parade, Parkville VIC 3052

Re: [gmx-users] control parameter on the Lennard-Jones interactions

2019-05-20 Thread battistia
maybe I can add the following section in the itp file (only for the A and B atom) and then vary the W(c12) factor [ nonbond_params ] ; i j func V(c6) W(c12) A B 1 0.22617E-02 0.74158E-06 if this is ok, it is very simple! Can I define the func 1 for the atom A and B if for the system

Re: [gmx-users] control parameter on the Lennard-Jones interactions

2019-05-20 Thread battistia
Dear all, by considering there is no response to my post, I suppose in gromacs there is no way to solve exactly my problem. Also if no exactly, has anyone a kind of suggestion to go in the direction of my calcultation? Many thanks in advance, Anna > Il 16 maggio 2019 alle 7.17

Re: [gmx-users] control parameter on the Lennard-Jones interactions

2019-05-17 Thread Omkar Singh
I have protein MD simulation file I want to find out protein water rdf with coordination number. Can anyone help regarding this? Thanks On Thu, May 16, 2019, 10:55 wrote: > > Dear gromacs members, > > I would ask you if in gromacs is possible to add a control parameter on > the Lennard-Jones

[gmx-users] control parameter on the Lennard-Jones interactions

2019-05-15 Thread battistia
Dear gromacs members, I would ask you if in gromacs is possible to add a control parameter on the Lennard-Jones interactions. For example we have two atoms A and B and the corresponding parameters; sigma(A), eps(A), sigma(B), esp(B); then for the A-B interactions we have the parameters