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Hi Hetenyi, If I understand you correctly I believe it is possible to do this in Gmsh. You can embed fixed points in surfaces easily. Forcing a surface to be part of a sphere is more involved but if the surface has three or four boundary lines it might be
easy to used RuledSurface.
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<div class="">Regards,</div>
<div class="">Dave<br class="">
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<div class="">On Apr 1, 2015, at 6:55 AM, Hetényi György <<a href="mailto:gyorgy.hetenyi@sed.ethz.ch" class="">gyorgy.hetenyi@sed.ethz.ch</a>> wrote:</div>
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Good afternoon,<br class="">
<br class="">
I am new to GMSH and I have only spent about 10 minutes looking at the website and the manual, so please excuse me if my question is too naive.<br class="">
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I would be interested to know whether and how GMSH could be used for the following problem:<br class="">
-there is a region defined on the surface of the Earth (given as a series of latitude-longitude pairs),<br class="">
-the goal is to make a roughly equally spaced mesh on this spherical region (characterized with one parameter, average distance between nodes),<br class="">
-there are already fixed nodes (initial mesh?) within this region that the final mesh should contain exactly (the edge of the surface does not have constrained points).<br class="">
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Any kind of help to start with the above problem would be appreciated.<br class="">
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With best regards,<br class="">
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György Hetényi<br class="">
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<div style="font-family: Tahoma; font-size: 13px;" class="">_________________________________<br class="">
Swiss Seismological Service<br class="">
ETH Zürich<br class="">
<br class="">
Dr György Hetényi<br class="">
NO H 63<br class="">
Sonneggstrasse 5<br class="">
8092 Zürich<br class="">
Switzerland<br class="">
<br class="">
phone: +41-44-6324381; fax: -6331065<br class="">
<a href="http://www.seismo.ethz.ch/research/groups/stek/people/hetenyig" class="">www.seismo.ethz.ch/research/groups/stek/people/hetenyig</a><br class="">
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