Re: [gmx-users] RDF analysis with respect to center of mass of otein

2014-09-19 Thread Carlos Navarro Retamal
I Justin, Thanks for your reply. Sadly, that’s not the only bizarre peak,as you can see on the next image: http://cl.ly/1B3B2y3I0o1R This is how it looks when i don’t consideren the COM as a reference: http://cl.ly/3m0d2W2y0N1Y What; i your opinion, could be the problem? I think i’ll just have to

Re: [gmx-users] RDF analysis with respect to center of mass of otein

2014-09-19 Thread Justin Lemkul
On 9/19/14 4:54 PM, Carlos Navarro Retamal wrote: I Justin, Thanks for your reply. Sadly, that’s not the only bizarre peak,as you can see on the next image: http://cl.ly/1B3B2y3I0o1R This is how it looks when i don’t consideren the COM as a reference: http://cl.ly/3m0d2W2y0N1Y What; i your

Re: [gmx-users] RDF analysis with respect to center of mass of otein

2014-09-19 Thread Carlos Navarro Retamal
Not at all. I’m using the .xtc file that comes from the simulation. What do you mean with the nrexcl issue? Is there a way i can fix it? -- Carlos Navarro Retamal Bioinformatic engineer Ph.D(c) in Applied Science, Universidad de Talca, Chile Center of Bioinformatics and Molecular Simulations

Re: [gmx-users] RDF analysis with respect to center of mass of otein

2014-09-19 Thread Carlos Navarro Retamal
Hi Justin, Thanks again for all your help. If the problem is related to periodicity, why if i consider the whole protein i got ‘normal’ results? In any case i centered the protein with the following command: trjconv -f npt_production.xtc -s npt_production.tpr -center -pbc mol -o

Re: [gmx-users] RDF analysis with respect to center of mass of otein

2014-09-19 Thread Justin Lemkul
On 9/19/14 6:07 PM, Carlos Navarro Retamal wrote: Hi Justin, Thanks again for all your help. If the problem is related to periodicity, why if i consider the whole protein i got ‘normal’ results? A normal (non-COM-based) RDF is an atom-based RDF, so periodicity doesn't affect the outcome.

Re: [gmx-users] RDF analysis with respect to center of mass of otein

2014-09-19 Thread Marcelo Depólo
Carlos, You might want to try a PBC correction with -pbc nojump and another RDF calculation with the corrected trajectory. 2014-09-19 19:10 GMT-03:00 Justin Lemkul jalem...@vt.edu: On 9/19/14 6:07 PM, Carlos Navarro Retamal wrote: Hi Justin, Thanks again for all your help. If the problem

Re: [gmx-users] RDF analysis with respect to center of mass of otein

2014-09-19 Thread Carlos Navarro Retamal
Hi Marcelo, Thanks for your reply. Sadly it didn’t work either, so i’m trying to generate a new .tpr file by changing the nrexcl values just as Justin suggest. Hope this may works. Thanks the two of you. Best Regards, Carlos -- Carlos Navarro Retamal Bioinformatic engineer Ph.D(c) in Applied