[petsc-users] Interpolation between nodal and elemental field

[K. Wu]

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!

Best regards,
Kai
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