Other functions¶
Integrating wavelet functions¶
The result of the call depends on the wavelet
argument:
for orthogonal and continuous wavelets - an integral of the wavelet function specified on an x-grid:
[int_psi, x_grid] = integrate_wavelet(wavelet, precision)
for other wavelets - integrals of decomposition and reconstruction wavelet functions and a corresponding x-grid:
[int_psi_d, int_psi_r, x_grid] = integrate_wavelet(wavelet, precision)
Central frequency of psi
wavelet function¶
Quadrature Mirror Filter¶
Orthogonal Filter Banks¶
Example Datasets¶
The following example datasets are available in the module pywt.data
:
name
description
ecg
ECG waveform (1024 samples)
aero
grayscale image (512x512)
ascent
grayscale image (512x512)
camera
grayscale image (512x512)
nino
sea surface temperature (264 samples)
demo_signal
various synthetic 1d test signals
Each can be loaded via a function of the same name.
Example:
>>> import pywt
>>> camera = pywt.data.camera()
>>> doppler = pywt.data.demo_signal('doppler', 1024)
>>> available_signals = pywt.data.demo_signal('list')