Fourier
 Usage
Notes
 Further Examples
Here is some sample data.
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This computes the discrete Fourier transform of the data. In general, the result is a list of complex numbers.
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Chop is used to discard the tiny imaginary parts that appear due to numerical error.
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As a check here is the computation of the discrete Fourier transform directly from the definition.
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This returns the original data.
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This gives the discrete Fourier transform of the data with Fourier parameters as used in signal processing.
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Here is an example in two dimensions such as might come up in analyzing light passing through an aperture.
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This gives the two-dimensional discrete Fourier transform.
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