| Wavelet transform in IDL? [message #89994] |
Tue, 13 January 2015 14:47  |
atmospheric physics
Messages: 121
Registered: June 2010
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Senior Member |
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Dear All,
Can anyone provide me the information whether we can perform multi-resolution analysis in IDL, especially, obtain the coefficients of the maximal overlap discrete wavelet transform (MODWT) of a time-series data?
Thanks in advance,
Madhavan
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| Re: Wavelet transform in IDL? [message #89998 is a reply to message #89994] |
Wed, 14 January 2015 01:12  |
Yngvar Larsen
Messages: 134
Registered: January 2010
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Senior Member |
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On Tuesday, 13 January 2015 23:47:46 UTC+1, Madhavan Bomidi wrote:
> Dear All,
>
> Can anyone provide me the information whether we can perform multi-resolution analysis in IDL, especially, obtain the coefficients of the maximal overlap discrete wavelet transform (MODWT) of a time-series data?
>
> Thanks in advance,
> Madhavan
MODWT is in principle just a subsampled CWT.
http://www.exelisvis.com/docs/WV_CWT.html
This function should be equivalent to a MODWT if you set DSCALE=1.0 (Default is 0.25, yielding 4 samples per octave in the scale dimension).
--
Yngvar
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