<div>dear teacher,</div><div>i read the groace_manual-4.5.4:</div><div>i found "The time between the reference points for the MSD calculation is set with -trestart."</div><div>and "the defaut is 10ps."</div>
<div>do it computer the "msd" like this :</div><div>0ns compared with "-beginfit to -endfit "</div><div>10ns compared with "-beginfit to -endfit "</div><div>20ns compared with "-beginfit to -endfit "</div>
<div>30ns compared with "-beginfit to -endfit "</div><div>....</div><div>thanks!!!</div><div><br></div><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; color: rgb(136, 136, 136); ">Bo Du<br>
PHD£¬ Department of Polymer Science and Engineering,<br>School of Chemical Engineering and technology,<br>Tianjin University, Weijin Road 92, Nankai District 300072,<br>Tianjin City P. R. China<br>Tel/Fax: +86-22-27404303<br>
</span><div><span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; color: rgb(136, 136, 136); ">E-mail: <a href="mailto:2008dubo@gmail.com" target="_blank" style="color: rgb(0, 0, 204); ">2008dubo@gmail.com</a></span> </div>
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