Constructs the wavelet filter to be used.
select_filter(filter_name)info A field<vec> that contains:
A integer specifying the length of the filter
A vector containing the coefficients for the wavelet filter
A vector containing the coefficients for the scaling filter
A String that must receive: "haar".
JJB
The package is oriented toward using only the haar filter. If the package extends at a later time, then the supporting infrastructure is there.