Hi Tsjerk.<br><br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">What do you mean with mean? Mean without fitting is a single point.<br>
Mean only makes sense after aligning. Now there's a nice recursive<br>
problem:<br>
1. Calculate mean to get reference<br>
2. Align to reference to calculate mean</blockquote><div><br></div><div>I mean the limit of this sequence is mean) Because it is naturally enough to mean that mean is value that minimizes deviation.</div><div>And I know (I learned this a few days ago, in my calculations) that for flexible molecules such as short peptides it is very another mean that calculated after first fit. Moreover, if molecule flexible enough, fit to some frame may be unstable (there may be similar structures that fit in non similar orientation).</div>
<div><br></div><div><span class="Apple-style-span" style="font-family: arial, helvetica, tahoma, sans-serif; font-size: 13px; line-height: 18px; word-spacing: 1px; background-color: rgb(255, 255, 255); ">Regards,</span></div>
<div>Yuri.</div></div>