<br><br>Thank you.<br>If I apply an electric field will I be able to get only positive values?<br><br><br>Regards,<br>Chathurika.<br><br><br><br><br><div class="gmail_quote">2011/6/22 André Farias de Moura <span dir="ltr"><<a href="mailto:moura@ufscar.br">moura@ufscar.br</a>></span><br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">sure, the ACF for a vector gives you the average cosine between that vector<br>
at time t=0 and the same vector at a later time lag, thus negative values may<br>
be seen as an inversion of the direction to which the vector points<br>
out (-1 would<br>
be the value for a vector lying 180 degrees away from the direction at t=0).<br>
<br>
best<br>
<br>
Andre<br>
<div><div></div><div class="h5"><br>
On Tue, Jun 21, 2011 at 8:29 PM, Chathurika Abeyrathne<br>
<<a href="mailto:c.abeyrathne@student.unimelb.edu.au">c.abeyrathne@student.unimelb.edu.au</a>> wrote:<br>
><br>
><br>
> Hi,<br>
><br>
> Is it possible to get negative values for normalized autocorrelation of<br>
> total dipole moment.<br>
><br>
> Thank you.<br>
><br>
><br>
> Regards,<br>
> Chathurika.<br>
><br>
</div></div>> --<br>
> gmx-users mailing list <a href="mailto:gmx-users@gromacs.org">gmx-users@gromacs.org</a><br>
> <a href="http://lists.gromacs.org/mailman/listinfo/gmx-users" target="_blank">http://lists.gromacs.org/mailman/listinfo/gmx-users</a><br>
> Please search the archive at<br>
> <a href="http://www.gromacs.org/Support/Mailing_Lists/Search" target="_blank">http://www.gromacs.org/Support/Mailing_Lists/Search</a> before posting!<br>
> Please don't post (un)subscribe requests to the list. Use the<br>
> www interface or send it to <a href="mailto:gmx-users-request@gromacs.org">gmx-users-request@gromacs.org</a>.<br>
> Can't post? Read <a href="http://www.gromacs.org/Support/Mailing_Lists" target="_blank">http://www.gromacs.org/Support/Mailing_Lists</a><br>
><br>
<font color="#888888">--<br>
gmx-users mailing list <a href="mailto:gmx-users@gromacs.org">gmx-users@gromacs.org</a><br>
<a href="http://lists.gromacs.org/mailman/listinfo/gmx-users" target="_blank">http://lists.gromacs.org/mailman/listinfo/gmx-users</a><br>
Please search the archive at <a href="http://www.gromacs.org/Support/Mailing_Lists/Search" target="_blank">http://www.gromacs.org/Support/Mailing_Lists/Search</a> before posting!<br>
Please don't post (un)subscribe requests to the list. Use the<br>
www interface or send it to <a href="mailto:gmx-users-request@gromacs.org">gmx-users-request@gromacs.org</a>.<br>
Can't post? Read <a href="http://www.gromacs.org/Support/Mailing_Lists" target="_blank">http://www.gromacs.org/Support/Mailing_Lists</a><br>
</font></blockquote></div><br>