Re: [gmx-users] coordination number of ion: rdf integration

2007-03-16 Thread Qiao Baofu
2007/3/16, andrea spitaleri <[EMAIL PROTECTED]>: Qiao Baofu wrote: > > When integrating, it is for the sphere: 4*PI*integral[/pho*r^{2}*dr]. fine. this is clear, where rho = N/V and N = number of particles (7 ions in this case) and V is the total Volume. N is the total number of the atoms to

Re: [gmx-users] coordination number of ion: rdf integration

2007-03-16 Thread andrea spitaleri
Qiao Baofu wrote: > > When integrating, it is for the sphere: 4*PI*integral[/pho*r^{2}*dr]. fine. this is clear, where rho = N/V and N = number of particles (7 ions in this case) and V is the total Volume. > Therefore, the efficient volume is (10x10x10). this may give you N=6. why the efficient

Re: [gmx-users] coordination number of ion: rdf integration

2007-03-16 Thread Qiao Baofu
2007/3/16, [EMAIL PROTECTED] <[EMAIL PROTECTED]>: Hi all, I am struggling with the rdf. I have 7 structural ions in my protein and I'd like to monitor the coordination number around them (ion - protein) during my MD. I have read papers about it and: http://www.gromacs.org/pipermail/gmx-users/200

Re: [gmx-users] coordination number of ion: rdf integration

2007-03-15 Thread Tsjerk Wassenaar
Hi Andrea, I have a program to look at the coordination number and other things for cations and oxygen ligands. Maybe that could help... If you want, I can send it to you. Best, Tsjerk On 3/16/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: Hi all, I am struggling with the rdf. I have 7 stru

[gmx-users] coordination number of ion: rdf integration

2007-03-15 Thread spitaleri.andrea
Hi all, I am struggling with the rdf. I have 7 structural ions in my protein and I'd like to monitor the coordination number around them (ion - protein) during my MD. I have read papers about it and: http://www.gromacs.org/pipermail/gmx-users/2006-November/024911.html and http://www.gromacs.org/pip