Skip to content
Discussion options

You must be logged in to vote

What an odd encoding. I would have stored "foo bar 2" as "foo bar 2" rather than "bar foo -2", myself.

Their alternative is at least well-defined for line elements, where the 2-element symmetry group is isomorphic to <{1,-1},×>, but is there an interpretation for other element types as well? The symmetry group of a triangle has 6 elements, 3 of which are of the opposite orientation to the identity and the other two. If we see a negative there, which of those three flips do we use? Keep the first node as the first node, I guess? The docs at https://gmsh.info/doc/texinfo/gmsh.html say that negative tags have this "reverse orientation" interpretation for surfaces as well as curves, but don't…

Replies: 1 comment 9 replies

Comment options

You must be logged in to vote
9 replies
@roystgnr
Comment options

@jmeier
Comment options

@jmeier
Comment options

@roystgnr
Comment options

Answer selected by jmeier
@jmeier
Comment options

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Category
Q&A
Labels
None yet
2 participants