What about

g_dist -h
g_angle -h

And what about reading a manual first (if only to browse the analysis programs)?

Tsjerk

On 5/28/07, Mark Abraham <[EMAIL PROTECTED]> wrote:
[EMAIL PROTECTED] wrote:
> HI
>
> Everybody, thank you for check my mail.
>
> I am new one on Gromacs, Now I have three problems ,I need to do some
> calculation ,please help me ! Thank you!
>
> 1.  the distance of  two specified atoms .
>
> 2. angle of three specified atoms.
>
> 3.dihedral of four specified atoms
>
> If commands, in detail the better!

I don't know the context in which you want to do these measurements, and
I can't read minds.

Mark
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--
Tsjerk A. Wassenaar, Ph.D.
Junior UD (post-doc)
Biomolecular NMR, Bijvoet Center
Utrecht University
Padualaan 8
3584 CH Utrecht
The Netherlands
P: +31-30-2539931
F: +31-30-2537623
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