Rank: 92 based on 398 downloads (last 30 days) and 3 files submitted
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Nathanael Yoder

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ATA Engineering
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37.766666, -122.40258

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Files Posted by Nathanael View all
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(last 30 days)
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14 Jun 2011 Screenshot PeakFinder Quickly finds local maxima (peaks) or minima (valleys) in a noisy signal. Author: Nathanael Yoder peak finder, chemistry, extrema, local max, valleys, peaks 381 28
  • 4.85714
4.9 | 24 ratings
13 Nov 2009 Screenshot PaddedHilbert Computes the Hilbert transform of a vector after it has been padded to ameliorate end effects. Author: Nathanael Yoder hilbert envelope, end effects, hilbert transform 7 0
06 Oct 2009 Screenshot PadSignal Pads a signal with portions of the signal itself to decrease end effects. Author: Nathanael Yoder end effects, hilbert transform, wavelet transform, hht, emd, hvt 10 0
Comments and Ratings by Nathanael View all
Updated File Comments Rating
14 Jun 2011 PeakFinder Quickly finds local maxima (peaks) or minima (valleys) in a noisy signal. Author: Nathanael Yoder

Thanks for catching that Tim. You were exactly right, the redundancy is an artifact from when I preallocated the matrix for speed. However, I essentially replaced this statement with the leftMin variable which is why you got the same results. The end effect is that the second part of that conditional can simply be eliminated.

Thanks again for your help and an updated version with the addition of a user defined threshold should be available shortly.

01 Dec 2009 layerplot A plot function much more powerful than plotyy Author: Zhipeng Gao

Has issues with resizing

01 Dec 2009 layerplot A plot function much more powerful than plotyy Author: Zhipeng Gao

16 Dec 2008 Kernel Density Estimator Reliable and extremely fast kernel density estimator for one-dimensional data Author: Zdravko Botev

I was incorrect but there does seem to be a scale factor on the density functions

16 Dec 2008 Kernel Density Estimator Reliable and extremely fast kernel density estimator for one-dimensional data Author: Zdravko Botev

Great code but I believe line 83 should be:
density=idct1d(a_t)/N;
instead of:
density=idct1d(a_t)/R;
in order to get an accurately scaled density function.

Comments and Ratings on Nathanael's Files View all
Updated File Comment by Comments Rating
27 Jun 2013 PeakFinder Quickly finds local maxima (peaks) or minima (valleys) in a noisy signal. Author: Nathanael Yoder Shirah

Hello, does anybody know how to replicate these peaks into a grayscale image.

Thank You

17 Jun 2013 PeakFinder Quickly finds local maxima (peaks) or minima (valleys) in a noisy signal. Author: Nathanael Yoder Han

Best code ever.

02 Jun 2013 PeakFinder Quickly finds local maxima (peaks) or minima (valleys) in a noisy signal. Author: Nathanael Yoder Opalan

19 Apr 2013 PeakFinder Quickly finds local maxima (peaks) or minima (valleys) in a noisy signal. Author: Nathanael Yoder Shoelson, Brett

I've tried several approaches to detecting peaks in noisy data; this one worked best, and is exceptionally fast. Very nice work!

18 Apr 2013 PeakFinder Quickly finds local maxima (peaks) or minima (valleys) in a noisy signal. Author: Nathanael Yoder Sandra

How should I cite this code?

Top Tags Applied by Nathanael
end effects, hilbert envelope, hilbert transform, signal processing, chemistry
Files Tagged by Nathanael View all
Updated   File Tags Downloads
(last 30 days)
Comments Rating
14 Jun 2011 Screenshot PeakFinder Quickly finds local maxima (peaks) or minima (valleys) in a noisy signal. Author: Nathanael Yoder peak finder, chemistry, extrema, local max, valleys, peaks 381 28
  • 4.85714
4.9 | 24 ratings
13 Nov 2009 Screenshot PaddedHilbert Computes the Hilbert transform of a vector after it has been padded to ameliorate end effects. Author: Nathanael Yoder hilbert envelope, end effects, hilbert transform 7 0
06 Oct 2009 Screenshot PadSignal Pads a signal with portions of the signal itself to decrease end effects. Author: Nathanael Yoder end effects, hilbert transform, wavelet transform, hht, emd, hvt 10 0
10 Jun 2008 Auto Peak Finder & Analyser Finds peaks, locations, fwhms and area in signal. Author: Martin Gorjan maximum detection and..., fwhm, peak, width, height, dsp 21 9
  • 4.0
4.0 | 2 ratings

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