[R] what's the R code for wavelet decomposition (Haar transformation)?

[Zhen Li]

Thanks so much, Chris! I only found Haar transformation from 
"filter.select". The manual I found on "wd" doesn't include Haar in the 
"family" specification. Essentially I want a code which can return 
approximation coefficients and detail coefficients. There might be other 
code in "wavethresh" I don't know of....I need more help here and thanks 
again!

Zhen



Chris Friedl wrote:
> The wavethresh package on CRAN has Haar wavelets.
>
>
> Zhen Li wrote:
>   
>> Dear all,
>>
>> Using R function "dwt", it seems that I cannot specify the wavelet 
>> transformation like Haar. What's the R code for wavelet decomposition 
>> which allows me to specify Haar wavelet transformation? Of course, if it 
>> can include "db2", that is even better. In general, I want an R function 
>> like matlab code "dwt". Thanks in advance!
>>
>> Zhen Li
>>
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>>     
>
>