This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)


represents the Mexican hat wavelet of width 1.
represents the Mexican hat wavelet of width .
  • The wavelet function () is given by .
Wavelet function:
Wavelet function:
Click for copyable input
Use WaveletScalogram to get a time scale representation of wavelet coefficients:
Use InverseWaveletTransform to reconstruct the signal:
Wavelet function as a function of width :
Wavelet function integrates to zero; :
Wavelet function and its Fourier transform:
MexicanHatWavelet does not have a scaling function:
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