On Tue, May 16, 2023 at 10:27 AM K. Wu <[email protected]> wrote:
Hi all,
Good day!
I am currently working on interploating the nodal field vector I obtained to its corresponding elemental field vector. I am doing it in a simple way by using structured mesh, the element value is just the average of its corresponding nodal values.
Is it possible to generate a connectivity matrix to implement this function? I also need this matrix later on to do a reverse transformation.
I am wondering is there a way in PETSc to generate this connectivity matrix between nodal and elemental mesh. Or is there any better way to accomplish this?
Thanks for your kind help!
1. Are you using a PETSc DM, or your own mesh? 2. In order to define what you mean, you have to attach function spaces (or something equivalent) to the two representations. Do you mean linear interpolation between vertices and constants on cells? Thanks, Matt
Best regards, Kai
-- 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.cse.buffalo.edu/~knepley/>