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My problem is to iterate through $[0.95,1] \times [0.95,1] \times[0.95,1] \in \mathbb{R}^{3}$. Is there a generic way to do this? I was considering rolling it all out and effectively vectorising the problem.

I would like to use Eigen but I think using a vector of MatrixXd elements seems not wise.

Any tips or help would be appreciated!

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  • $\begingroup$ There are infinitely many values in this box. It's going to take me a while to verify that the algorithm I have in mind actually works... stand by... $\endgroup$
    – Wolfgang Bangerth
    Commented Apr 28, 2023 at 22:26
  • $\begingroup$ Yes it shall take some discretization. I look forward to your idea Wolfgang $\endgroup$
    – KeynesCoeFen
    Commented Apr 29, 2023 at 8:41
  • $\begingroup$ I think you have to explain more what you want to do. A triple loop sounds like a good starting point, but since nobody has an idea what your goal is, there's nothing we can help. $\endgroup$
    – Wolfgang Bangerth
    Commented Apr 30, 2023 at 23:02
  • $\begingroup$ I have done more research Wolfgang and found that I need to have a structured, rectangular mesh. So I don't need to have anything fancy but if you or others know a way to create a box mesh using a decent C++ library, I would be very grateful to know. $\endgroup$
    – KeynesCoeFen
    Commented May 1, 2023 at 20:26
  • $\begingroup$ Why create a mesh data structure? Why not just use a triple loop? $\endgroup$
    – Wolfgang Bangerth
    Commented May 2, 2023 at 3:02

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