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I have a mesh that I import to the Meshlab and simplify, clean, and reconstruct the mesh. I export the final mesh from meshlab and import into finite element software (COMSOL). While importing, I received the error message of "Self intersecting face, Face:19303".

Meshlab cannot find any self-intersecting face. How can I select the face 19303 and modify/delete it to fix the error?

thanks, Hamed

Hamed Rahimi
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In my version of Meshlab (v1.3.2_64bit on Lubuntu), the recipe for selecting the face seems to be the following:

  1. Click "Filters > Selection > Conditional Face Selection"

  2. Write (fi == 19303) to "boolean function".

  3. Click "Apply".

Once the face is marked, Meshlab lets you remove it.

I suppose that fi stands for "face index" (it would be great if someone could confirm/correct this). And beware that Meshlab numbers the faces starting from zero; if COMSOL numbers them from one, you might be off-by-one.

Another posibility would be exporting the mesh in a format in which each triangle has its own line (off for instance) and counting the lines in your editor. But this would be tedious and error-prone.

Dominik Mokriš
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