Hi,

Looking at the section on wavelets in NR3, I couldn't find the Haar wavelet.

This is somewhat surprising as it is usually regarded as the "simplest" wavelet.

At the same time there is a nice OO hierarchy of wavelets (children of the Wavelet class). There are Daubechies wavelents in this hierarchy.

What would be a good way of extending this hierarchy to add Haar?

Regards,
Paul