Hi,
You can look at the code yourself :)
I coded this and -or (which I assume you are talking about)
is G with 1/nm as a unit.
It gives the probability that a particle has moved a distance r.
The 1/nm is the normalization to make the values bin-size independent.
Might it be that the difference in interpretation comes from if you consider
normalization of the volume of sphere-shells or not?
Berk
> From: c...@purdue.edu
> To: gmx-users@gromacs.org
> Date: Tue, 4 Aug 2009 10:25:33 -0400
> Subject: [gmx-users] g_vanhove output
>
> Hi all,
> I believe there is a mistake in g_vanhove in version 4.0.5
> The 'xvg' output file labels the y axis as G, with nm^-1 as units.
> From the units, I guessed that the output was actually r^2 G, however
> the initial slope is linear and not quadratic. After a few tries I
> concluded that
> the output is actually r*G, which is not something really useful.
> I wonder if someone could look at the code and confirm this doubt in
> one way or another.
>
> Many thank,
>
> Marcelo Carignano.
>
> PS: I couldn't find this on the list, but it has been difficult to
> access the
> archives lately.
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