multiwave (version 1.0)

scaling_function: scaling function and the wavelet function

Description

Computes the scaling function and the wavelet function (for compactly supported wavelet) using the cascade algorithm on the grid of dyadic integer $2^{-J}$

Usage

scaling_function(filter,J)

Arguments

filter

wavelet filter as obtained with scaling_filter.

J

value of the largest scale.

Value

phi

Scaling function.

psi

Wavelet function.

References

G. Fay, E. Moulines, F. Roueff, M. S. Taqqu (2009) Estimators of long-memory: Fourier versus wavelets. Journal of Econometrics, vol. 151, N. 2, pages 159-177.

S. Achard, I. Gannaz (2014) Multivariate wavelet Whittle estimation in long-range dependence. arXiv, http://arxiv.org/abs/1412.0391

See Also

DWTexact, scaling_filter

Examples

res_filter <- scaling_filter('Daubechies',8);
filter <- res_filter$h
scaling_function(filter,J=6)