<p>Actually, that solution does solve your problem. Gmsh by itself does not have that functionality, but it does provide the facilities with which you could extract those things easily (post-processing the generated mesh). </p>
<p>Just label the boundaries as 'Physical Line' (in your case, for others it might be Physical Surfaces). Then, when the mesh is generated, extract all lines that have the id you assigned to this collection of physical lines. You'll end up with a list of all the boundary nodes. </p>
<p>Not sure what the program you're using means by "list in order", so I can't help you there.</p>
<p>Kind regards, <br>
Oliver.</p>
<div class="gmail_quote">Op 20 sep. 2014 11:31 schreef "Melanie Roberts" <<a href="mailto:melanie.roberts@au1.ibm.com">melanie.roberts@au1.ibm.com</a>> het volgende:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><font face="sans-serif">Hi,</font>
<br>
<br><font face="sans-serif">In order to use my gMSh generated mesh
in another program I need to list, in order, the nodes that make up the
various boundaries of the domain - is there a way to do this in gMSh?</font>
<br>
<br><font face="sans-serif">as an example, I have the mesh</font>
<br><img src="cid:_1_07DD641407DD5EC40022DB85CA257D57" style="border:0px solid">
<br><font face="sans-serif">and want to be able to extract that
one boundary segment is 1 - 8 - 2 -3, a second is 3-4-5, a third 5 - 6
- 7 and the final 7 - 9 - 1. If I were to have a single list that
loops around the entire shape I can manually split into the various segments
without any problem.</font>
<br>
<br>
<br>
<br><font face="sans-serif">I found this </font><a href="http://www.geuz.org/pipermail/gmsh/2014/009188.html" target="_blank"><font color="blue" face="sans-serif">http://www.geuz.org/pipermail/gmsh/2014/009188.html</font></a><font face="sans-serif">
in the archive - but I do not think this answer my problem</font>
<br>
<br><font face="sans-serif">Thanks</font>
<br>
<br><font face="sans-serif">Melanie</font><br>_______________________________________________<br>
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<br></blockquote></div>