<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, 14 Feb 2019 at 17:37, Paolo Giannozzi <<a href="mailto:p.giannozzi@gmail.com">p.giannozzi@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr">On Thu, Feb 14, 2019 at 8:34 AM Offermans Willem <<a href="mailto:willem.offermans@vito.be" target="_blank">willem.offermans@vito.be</a>> wrote:<br></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div><br></div></blockquote><div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">So
neb.x is able to detect symmetry. Only in my particular case, it is not able to and I wonder why.
</blockquote><div><br></div><div>the reason has been explained no less than 1001 times: if the code does not find a symmetry, it's not there, according to the criteria implemented in the code. <br></div><div><br></div><div>Paolo</div><div><br></div></div></div></div></blockquote><div>A DFT code should recognise symmetry operations within a certain tolerance given the coordinates of the atoms. A quick search ("symmetry", "tolerance") in the pw.x input options does not return any result for a tunable parameter. What is the default value for the tolerance, and what should I do if I had to define a certain tolerance?</div><div>Thank you,</div><div>Fabrizio</div><div><br></div></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><b>Fabrizio Cossu<br>postdoctoral fellow at APCTP (Asia Pacific Center for Theoretical Physics)</b>,</div><div dir="ltr"><font face="comic sans ms, sans-serif">Hogil Kim Memorial Building #501 <br>POSTECH, 67 Cheongam-Ro, Nam-Gu, <br>Pohang-si, Gyeongsangbuk-do,<br>790-784 (37673), Republic of Korea<br></font></div><div dir="ltr"><pre> |<br> .----. .----. .----. |---- .----. ===========================<br> ,----| | | | | | | <a href="http://www.apctp.org/?JrgId=16" style="font-family:"comic sans ms",sans-serif;white-space:normal;color:rgb(17,85,204)" target="_blank">http://www.apctp.org/?JrgId=16</a><br> `----^ |----' `----' `----' |----' ===========================<br> | |</pre></div><div dir="ltr"><font face="comic sans ms, sans-serif"><span><span></span></span></font></div></div></div></div></div></div></div></div></div></div></div>