<div dir="ltr">Hello,<div><br></div><div>Thank you for your prompt responses. I must admit I had narrowed down my options to either using physical groups, or find a way to use 'NodeData', but the former seems to be popular and intuitive. I will go ahead and implement that to see if it serves the needful.</div><div><br></div><div>Thanks again!</div><div><br></div><div>Regards,</div><div>Aditya K</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jun 20, 2017 at 2:04 AM, DILASSER Guillaume <span dir="ltr"><<a href="mailto:Guillaume.DILASSER@cea.fr" target="_blank">Guillaume.DILASSER@cea.fr</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Hi Aditya,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">The enclosed file shows how you can generate post-processing datasets directly from within Gmsh and save them into a .msh
file. Basically, it uses the following steps :<u></u><u></u></span></p>
<p class="m_7229287707094659153MsoListParagraph"><u></u><span lang="EN-US" style="font-size:11.0pt;font-family:Symbol;color:#1f497d"><span>·<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Create a geometry and mesh it.<u></u><u></u></span></p>
<p class="m_7229287707094659153MsoListParagraph"><u></u><span lang="EN-US" style="font-size:11.0pt;font-family:Symbol;color:#1f497d"><span>·<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Generate a new post processing view on that geometry, containing the values to assign to each node. Here for
the example I use the MathEval Plugin to compute the distance from each node to the origin. Here you will probably have to dig into Gmsh Plugins to find which are useful in your case.<u></u><u></u></span></p>
<p class="m_7229287707094659153MsoListParagraph"><u></u><span lang="EN-US" style="font-size:11.0pt;font-family:Symbol;color:#1f497d"><span>·<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Save the post-processing view within a mesh-oriented .pos file (renamed with a .msh extension).<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">You can run this example from the command line with
<i>gmsh example1.geo -2</i> (<i>-0</i> should also work). In any case, it should output a NodeData.msh file that contains the meshed geometry along with a node-based post-processing view.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">However, on a more fundamental level, if you aim is simply to “mark” specific nodes of the mesh for whatever reason, why
not defining <a href="http://gmsh.info/doc/texinfo/gmsh.html#Elementary-vs-physical-entities" target="_blank">
Physical Entities</a> instead of using a post-processing view ? That would be much easier…<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Hoping this helps, let me know if your still have questions.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Sincerely Yours,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><u></u> <u></u></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"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#000099">Doctorant SACM / LEAS<u></u><u></u></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"><u></u><u></u></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"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#000099"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#000099"><a href="mailto:guillaume.dilasser@cea.fr" target="_blank"><span style="color:blue">guillaume.dilasser@cea.fr</span></a><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">De :</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> gmsh [mailto:<a href="mailto:gmsh-bounces@ace20.montefiore.ulg.ac.be" target="_blank">gmsh-bounces@ace20.<wbr>montefiore.ulg.ac.be</a>]
<b>De la part de</b> Aditya Kommajosula<br>
<b>Envoyé :</b> lundi 19 juin 2017 23:08<br>
<b>À :</b> <a href="mailto:gmsh@onelab.info" target="_blank">gmsh@onelab.info</a><br>
<b>Objet :</b> [Gmsh] Writing node-data from ".geo" file<u></u><u></u></span></p><div><div class="h5">
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<p class="MsoNormal">Hello,<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">I was wondering if it is possible to write node-data to a ".msh" file from within the ".geo" file. All the examples from the documentation seem to explain the format of a ".msh" file containing node-data, but I would like gmsh to write
out node-data (if possible) to the ".msh" file it generates (I need this to place "markers" on specific boundary nodes)<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Thank you!<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Regards <u></u><u></u></p>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><span style="font-family:times new roman,serif"><font size="2"><b style="color:rgb(11,83,148)">Aditya Kommajosula</b><br style="color:rgb(11,83,148)"><b style="color:rgb(11,83,148)">Graduate Research Assistant, Lab of Mechanics</b><br style="color:rgb(11,83,148)"><b style="color:rgb(11,83,148)">Mechanical Engineering, Iowa State University</b><br style="color:rgb(11,83,148)"><b style="color:rgb(11,83,148)">(<a href="mailto:k.aditya.subramanyam@gmail.com" target="_blank">adityak@iastate.edu</a>)</b></font></span><br></div></div></div></div>
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