目录
pywt库的全称是PyWavelets, https://pywavelets.readthedocs.io/en/latest/。
安装pywt库:
python">pip install PyWavelets
而不是VS2017中默认的pip install pywt,真是坑啊。
python">>>> import pywt>>> x = [3, 7, 1, 1, -2, 5, 4, 6]>>> cA, cD = pywt.dwt(x, ‘db2′)>>> print cA[ 5.65685425 7.39923721 0.22414387 3.33677403 7.77817459]>>> print cD[-2.44948974 -1.60368225 -4.44140056 -0.41361256 1.22474487]>>> print pywt.idwt(cA, cD, ‘db2′)[ 3. 7. 1. 1. -2. 5. 4. 6.]