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<DIV>On 8/08/2011 11:08 PM, Mark Abraham wrote:<BR><BR>>I don't quite follow your question, but for correlation functions to be <BR>>computed accurately, you need data collected much more frequently >than <BR>>the relevant time scales. That can require good planning.<BR>>Mark<BR></DIV>
<DIV>Hi,Mark and other gmx users£º</DIV>
<DIV>when I used g_velacc to calculate VAF, I found the range of frequency of the power spectrum is related with dt, so if is there is some solutions? can the complication of gmx by double decision solve it?<BR></DIV>
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<DIV><SPAN class="Apple-style-span" style="FONT-SIZE: 12px; LINE-HEIGHT: normal; FONT-FAMILY: tahoma, verdana, arial, helvetica, sans-serif">Sincerely yours <BR>Dr Ji-Nan Niu <BR>School of Materials Science and Engineering.<BR>China University of Mining and Technology.<BR>Jiangsu Province, XuZhou 221116<BR>P. R. China<BR>_____________________________________________________<BR>Email: <A style="COLOR: rgb(56,148,193); TEXT-DECORATION: none" href="mailto:njn0516@cumt.edu.cn">njn0516@cumt.edu.cn</A> </SPAN></DIV></DIV></div><br><br><span title="neteasefooter"><span id="netease_mail_footer"></span></span>