Rank: 592 based on 139 downloads (last 30 days) and 13 files submitted
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Jianwen Luo

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Files Posted by Jianwen View all
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14 Feb 2007 Screenshot Numerical differentiation based on wavelet transforms Numerical differentiation based on wavelet transforms (CWT and DWT) Author: Jianwen Luo time frequency, wavelets, wavelet, differentiation, derivative 33 6
  • 5.0
5.0 | 6 ratings
06 Dec 2005 Savitzky-Golay Smoothing and Differentiation Filter Savitzky-Golay smoothing and differentiation filter. Author: Jianwen Luo savitzkygolay, differentiation, smoothing, filter design, filter analysis, signal processing 66 17
  • 4.42857
4.4 | 14 ratings
29 Nov 2005 2-D Savitzky-Golay Smoothing and Differentiation Filter. 2-D Savitzky-Golay smoothing and differentiation filters, including those for mixed partial ... Author: Jianwen Luo filter design, filter analysis, savitzkygolay, smoothing, differentiation, derivative 2 3
  • 4.0
4.0 | 1 rating
11 Nov 2005 2-D Savitzky-Golay Smoothing and Differentiation Filter Obtain the coefficients of the 2-D Savitzky-Golay smoothing and differentiation filter, ... Author: Jianwen Luo differentiation, leastsquares, savitzkygolay, filter analysis, smoothing, filter design 3 1
22 Jun 2005 Lagrange Differentiator The digital differentiator from the Lagrange interpolation. Author: Jianwen Luo filter design, filter analysis, digital differentiato..., lagrange interpolatio..., maximally flat 1 0
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19 Apr 2013 Numerical differentiation based on wavelet transforms Numerical differentiation based on wavelet transforms (CWT and DWT) Author: Jianwen Luo Ganong, James

Your method worked to solve a problem that stumped me for years! I work with tracking data from ocean animals. These data can be very noisy, but I was able to extract good speed data.
30 May 2012 Smooth Differentiation A smoothed differentiation filter (digital differentiator). Author: Jianwen Luo UMP

Jianwen Luo: I have go through this m.file. This is a nice work and good reference to me but I really want to know how I can find the maximum and minimum peak from this graph?I want to use [pks locs]=peakfind() but I do not know how to manipulate it. I need your help.

10 May 2012 Savitzky-Golay Smoothing and Differentiation Filter Savitzky-Golay smoothing and differentiation filter. Author: Jianwen Luo McElroy, David

That is, one that is greater than the frame size. Say each data point was 1 second apart but I want to smooth with a 20 second interval.
10 May 2012 Savitzky-Golay Smoothing and Differentiation Filter Savitzky-Golay smoothing and differentiation filter. Author: Jianwen Luo McElroy, David

Hi Jianwen. Great script, nice and fast.

Quick question: How would you include a smoothing interval in this m.file?
05 Apr 2012 Numerical differentiation based on wavelet transforms Numerical differentiation based on wavelet transforms (CWT and DWT) Author: Jianwen Luo Cote, Marc

Thank you, exactly what I needed.
Top Tags Applied by Jianwen
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filter analysis, filter design, differentiation, smoothing, savitzkygolay
Files Tagged by Jianwen View all
  • 1 - 5 of
  • 13
Updated   File Tags Downloads
(last 30 days) 		Comments Rating
14 Feb 2007 Screenshot Numerical differentiation based on wavelet transforms Numerical differentiation based on wavelet transforms (CWT and DWT) Author: Jianwen Luo time frequency, wavelets, wavelet, differentiation, derivative 33 6
  • 5.0
5.0 | 6 ratings
06 Dec 2005 Savitzky-Golay Smoothing and Differentiation Filter Savitzky-Golay smoothing and differentiation filter. Author: Jianwen Luo savitzkygolay, differentiation, smoothing, filter design, filter analysis, signal processing 66 17
  • 4.42857
4.4 | 14 ratings
29 Nov 2005 2-D Savitzky-Golay Smoothing and Differentiation Filter. 2-D Savitzky-Golay smoothing and differentiation filters, including those for mixed partial ... Author: Jianwen Luo filter design, filter analysis, savitzkygolay, smoothing, differentiation, derivative 2 3
  • 4.0
4.0 | 1 rating
11 Nov 2005 2-D Savitzky-Golay Smoothing and Differentiation Filter Obtain the coefficients of the 2-D Savitzky-Golay smoothing and differentiation filter, ... Author: Jianwen Luo differentiation, leastsquares, savitzkygolay, filter analysis, smoothing, filter design 3 1
22 Jun 2005 Lagrange Differentiator The digital differentiator from the Lagrange interpolation. Author: Jianwen Luo filter design, filter analysis, digital differentiato..., lagrange interpolatio..., maximally flat 1 0

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