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JuliaDSP / Wavelets.jl

A Julia package for fast discrete wavelet transforms and utilities
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Extracting coefficients from filter #24

Closed robertdj closed 9 years ago

robertdj commented 9 years ago

Hi,

Say I create a filter:

julia> using Wavelets

julia> F = waveletfilter("db2")
Wavelets.WaveletTypes.OrthoFilter{Wavelets.WaveletTypes.PerBoundary}([0.4829629131445342,0.8365163037378079,0.22414386804201344,-0.12940952255126031],"db2")

How do I extract the vector of numbers from F?

I've been looking in the code, but I can't seem to figure this out.

Thanks,

Robert

gummif commented 9 years ago

Currently there is no function for that, but there probably should be. You can get the vector with F.qmf and in Wavelets.Transforms there are makeqmf and makereverseqmf function to make the qmf pairs. I will take a look at adding better functions for that.

gummif commented 9 years ago

See https://github.com/JuliaDSP/Wavelets.jl/commit/f68dc9c7c84c350b6ceb13bafc61e2fbdf0b826a

robertdj commented 9 years ago

Thanks!

(Sorry about my long response time -- I've been away on paternity leave)