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Re: Approximation with a Fourier-Series

From: Juan Pablo Carbajal
Subject: Re: Approximation with a Fourier-Series
Date: Wed, 31 Jan 2018 17:50:56 +0100

For multiple variables you will have to take the cartesian product of
you basis, e.g.

[1 sin(x) sin(x).*sin(y) sin(x).*cos(y) cos(x) cos(x).*sin(y) cos(x).*cos(y)]

You should use a basis that matches the features of the function you
want to approximate, e.i. periodic? smooth? saturating?

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