[Help-gsl] help on wavelet transform please?

[Ghassan Ayesh]

Dear Sirs:

I am using gsl-1.14 wavelet transform library, and I am not sure that I 
understand where or how do I get access to my approximations and details for 
each level in the DWT? I also do not understand why in the example mentioned 
that we set the value of DWT coefficients to zero on a stride of 20?

I read through the manual and searched the web but I did not seem to find any 
details on these or examples? Your help would help me tremendously and very 
much appreciated. Thanks very much in advance. Happy holidays.

Regards,
-Gus.