# [gmx-users] Center to center distance in cylindrical micelles

Mark Abraham mark.j.abraham at gmail.com
Sat Aug 11 15:11:16 CEST 2018

```Hi,

A center is a point. I don't see how you would define a central point of an
infinite cylinder.

Mark

On Sat, Aug 11, 2018, 14:47 Shan Jayasinghe <shanjayasinghe2011 at gmail.com>
wrote:

> Hi,
>
> I'm sorry for not providing the detail description of my system. Actually
> it is a hexagonal phase. Therefore, four cylindrical micelles can be seen
> in a cell. I want to calculate the center to center distance of two
> cylindrical micelles.
>
> On Sat, Aug 11, 2018 at 8:35 PM Mark Abraham <mark.j.abraham at gmail.com>
> wrote:
>
> > Hi,
> >
> > There is an axis of each cylinder but the two won't be parallel so there
> is
> > no unique distance to measure. So I suggest thinking carefully about what
> > you really want.
> >
> > Mark
> >
> > On Sat, Aug 11, 2018, 06:58 Shan Jayasinghe <
> shanjayasinghe2011 at gmail.com>
> > wrote:
> >
> > > Hi,
> > >
> > > I tried to used gmx distance. However, I don't understand how can I
> > define
> > > the center of the circle face of the cylinder to the same in the other
> > > cylindrical micelle.
> > >
> > > Can anyone help me?
> > > Thank you.
> > >
> > >
> > > On Sat, Aug 11, 2018 at 9:33 AM Mark Abraham <mark.j.abraham at gmail.com
> >
> > > wrote:
> > >
> > > > Hi,
> > > >
> > > > Have you looked at the different tools available and considered what
> > > might
> > > > be useful for you?
> > > >
> > > > Mark
> > > >
> > > > On Fri, Aug 10, 2018, 07:34 Shan Jayasinghe <
> > > shanjayasinghe2011 at gmail.com>
> > > > wrote:
> > > >
> > > > > Dear Gromacs Users,
> > > > >
> > > > > I want to calculate the center to center distance of two
> cylindrical
> > > > > micelles in my simulation. What gmx command should I use to
> calculate
> > > the
> > > > > distance? Can anyone help me?
> > > > >
> > > > > Thank you.
> > > > > --
> > > > > Gromacs Users mailing list
> > > > >
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> > > > >
> > > > --
> > > > Gromacs Users mailing list
> > > >
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> > >
> > >
> > > --
> > > Best Regards
> > > Shan Jayasinghe
> > > --
> > > Gromacs Users mailing list
> > >
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> > --
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>
>
> --
> Best Regards
> Shan Jayasinghe
> --
> Gromacs Users mailing list
>
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```