Re: [gmx-users] Trouble with gmx distance

2017-08-28 Thread Sotirios Dionysios I. Papadatos
vytautas1...@yahoo.com> Sent: Monday, August 28, 2017 11:28:54 AM To: gmx-us...@gromacs.org Subject: Re: [gmx-users] Trouble with gmx distance Two atoms for distance calculation have to be in same selection thus program expects even number of positions and do not get in my opinion.You could show yo

Re: [gmx-users] Trouble with gmx distance

2017-08-28 Thread Vytautas Rakeviius
Two atoms for distance calculation have to be in same selection thus program expects even number of positions and do not get in my opinion.You could show your index.ndx for better investigation. On Monday, August 21, 2017, 9:24:35 PM GMT+3, Sotirios Dionysios I. Papadatos

[gmx-users] Trouble with gmx distance

2017-08-21 Thread Sotirios Dionysios I. Papadatos
Hi, I am trying to calculate the distance between two atoms, which are defined in an index file. The command that I use is: "gmx distance -f output.gro -s prod.tpr -n index.ndx -oav distance.xvg" I get the obvious: "Selection 'atom_name' does not evaluate into an even number of positions

Re: [gmx-users] Trouble with gmx distance

2014-07-11 Thread Justin Lemkul
On 7/10/14, 11:55 PM, Teemu Murtola wrote: The help text explains this: Each selection specifies an independent set of distances to calculate. Each selection should consist of pairs of positions, and the distances are computed between positions 1-2, 3-4, etc. In other words, the selections

[gmx-users] Trouble with gmx distance

2014-07-10 Thread Justin Lemkul
Hi All, I have encountered a very annoying problem with gmx distance (the 5.0 replacement for g_dist/g_bond) - selections must have an even number of atoms. Can anyone explain why this is necessary? I designed a minimal test system (distance between two atoms), and got: