Fast Grouped Transformations as introduced in Bartel, Potts, Schmischke, 2021 .
pyGroupedTransforms provides the following fast algorithms:
nonequispaced fast transformation with exponential functions for grouped index sets based on the NFFT (non-equispaced fast Fourier transform)
nonequispaced fast transformation with cosine functions for grouped index sets based on the NFCT (non-equispaced fast cosine transform)
The pyGroupedTransforms package can be installed via pip:
pip install pyGroupedTransforms
Read the documentation for specific usage information.
- Python 3.8 or greater
- pyNFFT3 0.2.2 or greater
- NumPy 2.0.0 or greater
- SciPy 1.16.0 or greater