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    <div class="moz-cite-prefix">Hi,<br>
       I think I got it now. The numbers after dimension for the line
      entity inside Periodic are the matching tag entities for the
      lines. I was getting confused as I kept looking at line labels.<br>
      <br>
      Thanks again<br>
      Ranga Sudarsan<br>
      <br>
      On 27/04/2017 7:20 AM, DILASSER Guillaume wrote:<br>
    </div>
    <blockquote
cite="mid:BDF3E5E1B74E12499732EC24EF50B5D4A94736@E-EXDAGE-A0.extra.cea.fr"
      type="cite">
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        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Hi,<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"
            lang="EN-US">Have you looked at the documentation
            <a moz-do-not-send="true"
              href="http://gmsh.info/doc/texinfo/gmsh.html#MSH-ASCII-file-format">here</a>
            ? It says :<o:p></o:p></span></p>
        <p class="MsoNormal" style="margin-left:35.4pt"><i><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"
              lang="EN-US">$Periodic<o:p></o:p></span></i></p>
        <p class="MsoNormal" style="margin-left:35.4pt"><i><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"
              lang="EN-US">number-of-periodic-entities<o:p></o:p></span></i></p>
        <p class="MsoNormal" style="margin-left:35.4pt"><i><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"
              lang="EN-US">dimension slave-entity-tag master-entity-tag<o:p></o:p></span></i></p>
        <p class="MsoNormal" style="margin-left:35.4pt"><i><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"
              lang="EN-US">number-of-nodes<o:p></o:p></span></i></p>
        <p class="MsoNormal" style="margin-left:35.4pt"><i><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"
              lang="EN-US">slave-node-number master-node-number<o:p></o:p></span></i></p>
        <p class="MsoNormal" style="margin-left:35.4pt"><i><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"
              lang="EN-US">…<o:p></o:p></span></i></p>
        <p class="MsoNormal" style="margin-left:35.4pt"><i><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"
              lang="EN-US">$EndPeriodic<o:p></o:p></span></i></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"
            lang="EN-US">It looks like your information.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"
            lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"
            lang="EN-US">Faithfully Yours,<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Tahoma",sans-serif;color:#000099">Guillaume
            DILASSER</span><span
style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:#000099"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#000099">Doctorant
            SACM / LEAS<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#000099">CEA
            - Centre de Saclay - Bât.123 - PC 319c</span><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#000099"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#000099">91191
            Gif sur Yvette Cedex - France -</span><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#000099"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#000099"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#000099"><a
              moz-do-not-send="true"
              href="mailto:guillaume.dilasser@cea.fr"><span
                style="color:blue">guillaume.dilasser@cea.fr</span></a><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><span
              lang="EN-US"><o:p></o:p></span></span></p>
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            <p class="MsoNormal"><b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext"
                  lang="EN-US">De :</span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext"
                lang="EN-US"> gmsh
                [<a class="moz-txt-link-freetext" href="mailto:gmsh-bounces@ace20.montefiore.ulg.ac.be">mailto:gmsh-bounces@ace20.montefiore.ulg.ac.be</a>]
                <b>De la part de</b> Ranga Sudarsan<br>
                <b>Envoyé :</b> jeudi 27 avril 2017 12:56<br>
                <b>À :</b> gmsh mailing list <a class="moz-txt-link-rfc2396E" href="mailto:gmsh@onelab.info"><gmsh@onelab.info></a><br>
                <b>Objet :</b> [Gmsh] Help understanding MSH file
                entries while using "Periodic surface with translate "<o:p></o:p></span></p>
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        <p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal" style="margin-bottom:12.0pt"><span
            lang="EN-US"> </span>Hi there,<br>
              I am meshing a geometry with periodic (translated meshes)
          boundary conditions along one of the directions (X in my
          case). I am using<br>
          periodic surface with translate to setup the translated
          periodic meshes. I need help understanding some entries in the
          Msh file generated specifically the section under "$Periodic"
          (See attached image, in my case surfaces 1 and 8 are
          periodic). I understand that in my case their are totally 11
          periodic entities -- 5 points , 5 lines and 1 surface and my
          trouble is in understanding the format of the output
          corresponding to each of these periodic entities. It will be
          of great help if some one explain to me what is the format for
          each of these entities so that I can write a code to read the
          msh file and generate relevant input files for my finite
          element solver. I have attached the geo and mesh file.<br>
          <br>
          Thanks again<br>
          Ranga Sudarsan<o:p></o:p></p>
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