[SciPy-User] spectral derivative of aperiodic function

[Pierre Barbier de Reuille]

If you have reflexive boundary conditions, then you can use DCT the same
way you were using FFT (i.e. I assume multiplying the transform of the
differentiation matrix and the grid).

-- 
Barbier de Reuille Pierre


On 11 February 2013 01:55, <bouloumag at gmail.com> wrote:

> I would like to calculate the spatial derivative of a variable defined on
> the points of a uniform grid. The domain is NOT periodic, so the FFT method
> is useless here. I wonder if there exist other spectral methods to
> calculate the derivative on an aperiodic domain or if my only hope is to
> use the finite difference method?
>
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