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dlfivefifty
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Does this PR allow me to approximate complex functions on the disk using Zernike polynomials? If so, any hint on what that Julia code would look like?

@dlfivefifty
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Yes. Are you sure you need the complex variant? We already have the real implemented with sin / cos, which works for complex functions.

Here is an example

https://github.com/JuliaApproximation/MultivariateOrthogonalPolynomials.jl/blob/master/examples/diskhelmholtz.jl

Adaptive solve is currently broken since iterating til underflow takes too long.. so need to implement more sensible convergence criteria.

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