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Re: Broad Peak Search Algorithm [message #83533 is a reply to message #83532]

Tue, 12 March 2013 02:44

Yngvar Larsen
Messages: 134
Registered: January 2010

Senior Member

On Monday, 11 March 2013 23:32:16 UTC+1, mark...@gmail.com wrote:
> Hi All
>
>
>
> I have a dataset which is noisy, but contains a small number (< 5) broad peaks, much like the data given in http://carlwillis.files.wordpress.com/2011/03/wellrich_spect rum.jpg (just an pictorial example, not the actual data). You'll notice that there is both small amplitude noise throughout the data together with a small number of broad peaks.

[...]

> Can anyone suggest a robust method or existing IDL routine that would help pick out the broad peaks only?

For this kind of application, you might want to have look at the concept "significance in scale space", pioneered by Steve Marron. Examples from 1D and 2D here:

http://www.unc.edu/~marron/Movies/SSS_movies.html

Papers here (quite technical):
http://www.unc.edu/~marron/marron_papers.html

No IDL code that I know of, but there should be some Matlab code to be found (SiZer by Marron and Chaudhuri), and if I remember correcty also a Java port.

--
Yngvar

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[Message index]

		Re: Broad Peak Search Algorithm By: Yngvar Larsen on Tue, 12 March 2013 02:47
		Re: Broad Peak Search Algorithm By: Yngvar Larsen on Tue, 12 March 2013 02:44
		Re: Broad Peak Search Algorithm By: Craig Markwardt on Mon, 11 March 2013 17:59
		Re: Broad Peak Search Algorithm By: Paul Van Delst[1] on Mon, 11 March 2013 16:15
		Re: Broad Peak Search Algorithm By: Helder Marchetto on Mon, 11 March 2013 15:47

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