JuliaMath / JuliaMath/Dierckx.jl

`derivative` does not respect boundary condition

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Description

I'm using `bc="nearest"` for my 1D spline interpolator, but the `derivative` function is not respecting this boundary condition.
here, I'm showing that the derivative is nonzero, whereas the interpolator is flat in this region of the domain.

Screenshot 2024-06-15 at 8 34 19 AM

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