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robust wavelet estimator

To: s-news@lists.biostat.wustl.edu
Subject: robust wavelet estimator
From: Maria Key <mariakey@stat.ucl.ac.be>
Date: Wed, 20 Nov 2002 13:25:45 +0100

Hello all,
I'm using the function rob.dwt of the wavelets
module to get the robust discrete wavelet transform of a non-periodic signal of length
not divisible by 2^(n.levels), using "polynomial or reflection" as boundary
correction. I get the following error message:

"Problem in left.pad(y, end = lp + p): There are no boundary extensions for interval wavelets".

The classical dwt function works without problem for my data and with the
same options. The wavelet help says that rob.dwt uses the same options as dwt, but it seems that the only boundary corrections available are "periodic" for dyadic sample sizes and "infinite" with pedg=-1 for samples of any size.


Does anybody know what could be the problem ?
Thanks in advance for you help !

Maria

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Maria  Key Prato

Institut de Statistique, UCL
Voie du Roman Pays, 20
B-1348 Louvain-la-Neuve
Tel off: ++ 32-10/47.88.60
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