WaveletPhi
WaveletPhi[wave,x]
gives the scaling function for the symbolic wavelet wave evaluated at x.
WaveletPhi[wave]
gives the scaling function as a pure function.
Details and Options

- The scaling function
satisfies the recursion equation
, where
are the lowpass filter coefficients.
- WaveletPhi[wave,x,"Dual"] gives the dual scaling function
for biorthogonal wavelets such as BiorthogonalSplineWavelet and ReverseBiorthogonalSplineWavelet.
- The dual scaling function satisfies the recursion equation
, where
are the dual lowpass filter coefficients.
- The following options can be used:
-
MaxRecursion 8 number of recursive iterations to use WorkingPrecision MachinePrecision precision to use in internal computations
Examples
open allclose allSee Also
WaveletPsi WaveletFilterCoefficients DiscreteWaveletTransform
Related Guides
Introduced in 2010
(8.0)