Rank: 99 based on 1724 downloads (last 30 days) and 13 files submitted
photo

Jianwen Luo

E-mail

Personal Profile:

Professional Interests:

 

Watch this Author's files

 

Files Posted 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, differentiation, wavelets, wavelet, derivative 158 4
  • 5.0
5.0 | 4 ratings
06 Dec 2005 Savitzky-Golay Smoothing and Differentiation Filter Savitzky-Golay smoothing and differentiation filter. Author: Jianwen Luo filter design, filter analysis, savitzkygolay, smoothing, differentiation, signal processing 152 14
  • 4.38462
4.4 | 13 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 151 2
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 filter design, filter analysis, savitzkygolay, smoothing, differentiation, leastsquares 116 0
22 Jun 2005 Lagrange Differentiator The digital differentiator from the Lagrange interpolation. Author: Jianwen Luo filter design, lagrange interpolatio..., filter analysis, maximally flat, digital differentiato... 119 0
Comments and Ratings on Jianwen's Files View all
  • 1 - 5 of
  • 47
Updated File Comment by Comments Rating
07 Apr 2009 Numerical differentiation based on wavelet transforms Numerical differentiation based on wavelet transforms (CWT and DWT) Author: Jianwen Luo Gianluca

Do you think the same can be applied also for integration?
07 Apr 2009 Numerical differentiation based on wavelet transforms Numerical differentiation based on wavelet transforms (CWT and DWT) Author: Jianwen Luo Gianluca

18 Dec 2008 Savitzky-Golay Smoothing and Differentiation Filter Savitzky-Golay smoothing and differentiation filter. Author: Jianwen Luo Holoborodko, Pavel

Alternative approach for noise-robust differentiation is described here:
http://www.holoborodko.com/pavel/?page_id=245
On the contrary to Savitzky-Golay filters it has nice property of guaranteed noise suppression.

19 Jun 2008 Smooth Differentiation A smoothed differentiation filter (digital differentiator). Author: Jianwen Luo djafri, ridzan

19 May 2008 Smooth Differentiation A smoothed differentiation filter (digital differentiator). Author: Jianwen Luo Demir, Hakan

Can you also draw the bode plot of the differentiator as a transfer function.

        figure;
        grid;
        [h, w] = freqz(h);
        plot(w/pi*30, (abs(h)), 'r-');

This doesn't seem like a differentiator.
Top Tags Applied by Jianwen
  • 1 - 5 of
  • 26
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, differentiation, wavelets, wavelet, derivative 158 4
  • 5.0
5.0 | 4 ratings
06 Dec 2005 Savitzky-Golay Smoothing and Differentiation Filter Savitzky-Golay smoothing and differentiation filter. Author: Jianwen Luo filter design, filter analysis, savitzkygolay, smoothing, differentiation, signal processing 152 14
  • 4.38462
4.4 | 13 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 151 2
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 filter design, filter analysis, savitzkygolay, smoothing, differentiation, leastsquares 116 0
22 Jun 2005 Lagrange Differentiator The digital differentiator from the Lagrange interpolation. Author: Jianwen Luo filter design, lagrange interpolatio..., filter analysis, maximally flat, digital differentiato... 119 0
 

MATLAB Central Terms of Use

NOTICE: Any content you submit to MATLAB Central, including personal information, is not subject to the protections which may be afforded information collected under other sections of The MathWorks, Inc. Web site. You are entirely responsible for all content that you upload, post, e-mail, transmit or otherwise make available via MATLAB Central. The MathWorks does not control the content posted by visitors to MATLAB Central and, does not guarantee the accuracy, integrity, or quality of such content. Under no circumstances will The MathWorks be liable in any way for any content not authored by The MathWorks, or any loss or damage of any kind incurred as a result of the use of any content posted, e-mailed, transmitted or otherwise made available via MATLAB Central. Read the complete Terms prior to use.

Contact us at files@mathworks.com