On Wed, Oct 11, 2017 at 4:54 AM, Patrick Sanan <[email protected]> wrote:
> Another terminology question to help with the docs. > > What's the origin of the term "chart" in DMPlex? I'm only previously > familiar with the term in the context of manifolds (where chart = > homeomorphism from an open set in the manifold to an open set in R^n). > That is what it is supposed to be. A chart is coordinates on a patch of the manifold. We intend the same thing here in that you can locally refer to points with a given name, but they may have a different name on another chart (process). The names are matched up using the PetscSF. > In terms of the use in DMPlex, is there anything wrong with thinking of > "chart" as a shorter way to say "interval of integers, closed on the left > and open on the right, e.g. [pStart,pEnd)"? > No, since we depend on continuity of point names almost everywhere. Matt -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener https://www.cse.buffalo.edu/~knepley/ <http://www.caam.rice.edu/~mk51/>
