Hello, I have a question regarding how to loop over all active cells within a row cell.
I'm trying to implement the multiscale finite element method with dealii. The multiscale bases are calculated on a refined mesh, but their supports are within cells belonging to a coarser mesh. I'll first construct a grid, then refine it with dealii built-in functions. It would be convenient if I can loop over all active cells on the refined mesh living in (raw) cells in the coarser mesh. Any hints would be appreciated. Thanks in advance. Cheers, Xin
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