[SciPy-User] spectral derivative of aperiodic function

Pierre Barbier de Reuille pierre@barbierdereuille....
Mon Feb 11 10:52:17 CST 2013

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@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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