[Gmsh] Holes in mesh

[Xinyu Zhao]

Dear Gmsh team

I'm trying to plot an area with many holes in it.

I'm aware of test example 5. But in that example the cheeseholes' area is
also meshed, instead of the mesh shown in the following picture. [image:
内嵌图片 1]

I know a simple hole as the one is the picture could be plotted by a
special line loop. However, what if the there are so many holes that they
have to be generated by code and therefore line numbers of the generated
line loops could not be find?

Please find the attached file for the mesh I'm trying to plot. I'm trying
to generate the mesh so that each hole in the Graphit physical volume looks
exactly like the hole shown in the picture (no mesh in the hole.)

Thanks and wishes
xinyu
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