python pywt 小波变换库文档.pdf

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Main features

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Python 3

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Contents

PyWavelets Documentation Release 1.0.0.dev0+8377379 The PyWavelets Developers May 08, 2017

1 Main features 2 Requirements 3 Download 4 Install 5 Documentation 6 State of development & Contributing 7 Python 3 8 Contact 9 License 10 Contents Contents 3 5 7 9 11 13 15 17 19 21 i

PyWavelets Documentation, Release 1.0.0.dev0+8377379 PyWavelets is free and Open Source wavelet transform software for the Python programming language. It combines a simple high level interface with low level C and Cython performance. PyWavelets is very easy to use and get started with. Just install the package, open the Python interactive shell and type: >>> import pywt >>> cA, cD = pywt.dwt([1, 2, 3, 4], 'db1') Voilà! Computing wavelet transforms has never been so simple :) Contents 1

PyWavelets Documentation, Release 1.0.0.dev0+8377379 2 Contents

The main features of PyWavelets are: • 1D, 2D and nD Forward and Inverse Discrete Wavelet Transform (DWT and IDWT) • 1D, 2D and nD Multilevel DWT and IDWT • 1D and 2D Stationary Wavelet Transform (Undecimated Wavelet Transform) • 1D and 2D Wavelet Packet decomposition and reconstruction • 1D Continuous Wavelet Transform • Computing Approximations of wavelet and scaling functions • Over 100 built-in wavelet ﬁlters and support for custom wavelets • Single and double precision calculations • Real and complex calculations • Results compatible with Matlab Wavelet Toolbox (TM) CHAPTER 1 Main features 3

PyWavelets Documentation, Release 1.0.0.dev0+8377379 4 Chapter 1. Main features

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