GFFT - Generalized Fast Fourier Transformations for Python
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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.
  - Efficiently use with Hermitian symmetric data. One can store only half of
    the data, and the symmetric data 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](https://github.com/mrbell/gfft/wiki).

GFFT is licensed under the [GPLv3](http://www.gnu.org/licenses/gpl.html).