scipy/scipy

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 # This file is executed by __init__.py. """ Discrete Fourier transform algorithms Modules ======= .. autosummary:: :toctree: generated/ basic - Basic discrete Fourier transform operators convolve - Convolution functions helper - Helper functions, frequency shifts and sample frequencies pseudo_diffs - Differential and pseudo-differential operators realtransforms - Real spectrum tranforms (DCT, DST, MDCT) Functions ========= Fast Fourier Transforms (FFTs) ------------------------------ .. autosummary:: :toctree: generated/ fft - Fast (discrete) Fourier Transform (FFT) ifft - Inverse FFT fft2 - Two dimensional FFT ifft2 - Two dimensional inverse FFT fftn - n-dimensional FFT ifftn - n-dimensional inverse FFT rfft - FFT of strictly real-valued sequence irfft - Inverse of rfft dct - Discrete cosine transform idct - Inverse discrete cosine transform Differential and pseudo-differential operators ---------------------------------------------- .. autosummary:: :toctree: generated/ diff - Differentiation and integration of periodic sequences tilbert - Tilbert transform: cs_diff(x,h,h) itilbert - Inverse Tilbert transform: sc_diff(x,h,h) hilbert - Hilbert transform: cs_diff(x,inf,inf) ihilbert - Inverse Hilbert transform: sc_diff(x,inf,inf) cs_diff - cosh/sinh pseudo-derivative of periodic sequences sc_diff - sinh/cosh pseudo-derivative of periodic sequences ss_diff - sinh/sinh pseudo-derivative of periodic sequences cc_diff - cosh/cosh pseudo-derivative of periodic sequences shift - Shift periodic sequences 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) """ __all__ = ['fft','ifft','fftn','ifftn','rfft','irfft', 'fft2','ifft2', 'diff', 'tilbert','itilbert','hilbert','ihilbert', 'sc_diff','cs_diff','cc_diff','ss_diff', 'shift', 'rfftfreq' ] if __doc__: __doc_title__ = __doc__.lstrip().split('\n',1)[0] else: __doc_title__ = None postpone_import = 1 global_symbols = ['fft','fftn','fft2','ifft','ifft2','ifftn', 'fftshift','ifftshift','fftfreq']
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