GFFT - Generalized Fast Fourier Transformations for Python

GFFT is a package for performing Fast Fourier Transformations even in the case where the data is not defined on a regularly spaced grid. This is commonly the case in applications such as radio interferometry and medical imaging.

Features include:

• Fast transformations between regular to regular, regular to irregular, irregular to regular, and irregular to irregular spaces.
• Efficient handling of Hermitian symmetric data. Store only half of the data, and the symmetric data points are implied.
• Handles mixtures of FFT and IFFT along different axes for multi-dimensional data.
• Handles phase shifting of data for arbitrary axis definitions whether zero-centered or centered at any other location along the input/output axes.

For more information, please refer to the GFFT Wiki.

GFFT is licensed under the GPLv3.