Tracking JSoC 2019

[ChrisRackauckas]

• [x] Boundary condition redo and 1D operator correctness https://github.com/JuliaDiffEq/DiffEqOperators.jl/issues/98
• [ ] Integration tests of the full 1D operators + boundary condition handling on some PDEs
• [ ] Integrate the non-uniform grid operator into the new version
• [ ] Update the upwinding operators to use this new form.
• [ ] Give the boundary operators an optional direction vector
• [x] Setup update_coefficients! to update the direction vector based on a given direction function
• [ ] Higher dimensional operators
• [ ] Composed operators (a type of holding L*Q, then expand to L1*Q1 + L2*Q2)
• [ ] Higher dimensional composed operator specializations (NNLib.jl)
• [ ] Higher dimensional boundary condition padding

[xtalax]

Could someone elaborate on this direction vector? Is this directional as in upwind/downwind, forward or backward diff, or dimension?

[shivin9]

It is directional as in upwind/downwind operators. That will naturally affect the direction of differentiation stencil also.