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Dear PETSc dev team,</div>
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<div class="elementToProof"><span style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">I am working on an application which makes use of DMPlex. I would like to extract a
subsection of the dm based on some field metric defined on its vertices or cells. I am using DMLabel to mark my boundary conditions and would like the child mesh to retain some of the labels. Is there a simple way of doing this? I could spend some time writing
my own implementation, looping over cells and building a new DM from scratch or using something like DMPlexBuildFromCellListParallel, but I feel like there should exist a solution. Could you point me in the right direction?</span></div>
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Thanks in advance!</div>
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Best,</div>
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Vilmer</div>
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