| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113 |
- """
- ==============================================
- Discrete Fourier transforms (:mod:`scipy.fft`)
- ==============================================
- .. currentmodule:: scipy.fft
- Fast Fourier Transforms (FFTs)
- ==============================
- .. autosummary::
- :toctree: generated/
- fft - Fast (discrete) Fourier Transform (FFT)
- ifft - Inverse FFT
- fft2 - 2-D FFT
- ifft2 - 2-D inverse FFT
- fftn - N-D FFT
- ifftn - N-D inverse FFT
- rfft - FFT of strictly real-valued sequence
- irfft - Inverse of rfft
- rfft2 - 2-D FFT of real sequence
- irfft2 - Inverse of rfft2
- rfftn - N-D FFT of real sequence
- irfftn - Inverse of rfftn
- hfft - FFT of a Hermitian sequence (real spectrum)
- ihfft - Inverse of hfft
- hfft2 - 2-D FFT of a Hermitian sequence
- ihfft2 - Inverse of hfft2
- hfftn - N-D FFT of a Hermitian sequence
- ihfftn - Inverse of hfftn
- Discrete Sin and Cosine Transforms (DST and DCT)
- ================================================
- .. autosummary::
- :toctree: generated/
- dct - Discrete cosine transform
- idct - Inverse discrete cosine transform
- dctn - N-D Discrete cosine transform
- idctn - N-D Inverse discrete cosine transform
- dst - Discrete sine transform
- idst - Inverse discrete sine transform
- dstn - N-D Discrete sine transform
- idstn - N-D Inverse discrete sine transform
- Fast Hankel Transforms
- ======================
- .. autosummary::
- :toctree: generated/
- fht - Fast Hankel transform
- ifht - Inverse of fht
- Helper functions
- ================
- .. autosummary::
- :toctree: generated/
- fftshift - Shift the zero-frequency component to the center of the spectrum
- ifftshift - The inverse of `fftshift`
- fftfreq - Return the Discrete Fourier Transform sample frequencies
- rfftfreq - DFT sample frequencies (for usage with rfft, irfft)
- fhtoffset - Compute an optimal offset for the Fast Hankel Transform
- next_fast_len - Find the optimal length to zero-pad an FFT for speed
- set_workers - Context manager to set default number of workers
- get_workers - Get the current default number of workers
- Backend control
- ===============
- .. autosummary::
- :toctree: generated/
- set_backend - Context manager to set the backend within a fixed scope
- skip_backend - Context manager to skip a backend within a fixed scope
- set_global_backend - Sets the global fft backend
- register_backend - Register a backend for permanent use
- """
- from ._basic import (
- fft, ifft, fft2, ifft2, fftn, ifftn,
- rfft, irfft, rfft2, irfft2, rfftn, irfftn,
- hfft, ihfft, hfft2, ihfft2, hfftn, ihfftn)
- from ._realtransforms import dct, idct, dst, idst, dctn, idctn, dstn, idstn
- from ._fftlog import fhtoffset
- from ._fftlog_multimethods import fht, ifht
- from ._helper import next_fast_len
- from ._backend import (set_backend, skip_backend, set_global_backend,
- register_backend)
- from numpy.fft import fftfreq, rfftfreq, fftshift, ifftshift
- from ._pocketfft.helper import set_workers, get_workers
- __all__ = [
- 'fft', 'ifft', 'fft2', 'ifft2', 'fftn', 'ifftn',
- 'rfft', 'irfft', 'rfft2', 'irfft2', 'rfftn', 'irfftn',
- 'hfft', 'ihfft', 'hfft2', 'ihfft2', 'hfftn', 'ihfftn',
- 'fftfreq', 'rfftfreq', 'fftshift', 'ifftshift',
- 'next_fast_len',
- 'dct', 'idct', 'dst', 'idst', 'dctn', 'idctn', 'dstn', 'idstn',
- 'fht', 'ifht',
- 'fhtoffset',
- 'set_backend', 'skip_backend', 'set_global_backend', 'register_backend',
- 'get_workers', 'set_workers']
- from scipy._lib._testutils import PytestTester
- test = PytestTester(__name__)
- del PytestTester
|
