[petsc-users] DMPlex Interpolation

[Mike Michell]

Hi, this is a duplication of
https://lists.mcs.anl.gov/pipermail/petsc-users/2022-August/046746.html
for in-depth question.

I wrote a short code as attached to test interpolation between two DMPlex
objects. Goal is to map solution field defined on cell-centroid(DMPlex-1)
into vertex(DMPlex-2) field or vice versa.

Basically, DMCreateInterpolation() fails in the example code and it was not
allowed to get useful error messages. The DMPlex is created by loading a 2D
square box in Gmsh. Can I get some comments on that?

Thanks,
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