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GMSH: how to define .msh explicity from .geo

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Old   November 10, 2021, 13:10
Default GMSH: how to define .msh explicity from .geo
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I have a piece of python software that generates topological complexes for use in cell method simulations. I can generate triangulations of these complexes in the software, and I would like to export these triangulations to use as meshes for finite element simulations in FEniCS.

The format of the data in the python software (node, edge, face, volume) could be easily exported as a .geo file. This geo file would define all elements that I would like to have in my .msh file, I would not like any additional elements beyond what is defined in the .geo file.

Is there any way that I can have gmsh output a .msh file which includes only the elements defined in my .geo file?

I have included an image of a sample .geo file that would be supplied to gmsh, as well as the corresponding output using the standard
Code:
gmsh -2 filename.geo
command.

geo_file.png
Sample .geo file

msh_file.png
Current .msh file that includes additional undesired elements. How can I get the output .msh to look exactly like the .geo file that I am converting from?

Any help you can offer would be greatly appreciated.
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