MATLAB Answers

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Walter Roberson

Walter Roberson

I am not able to assist with projects at this time.

70793 reputation
29 questions
36928 answers
13694 accepted answers
Image Analyst

Image Analyst

Senior Scientist in one of the world's 10 largest industrial corporations doing image analysis full time. Ph.D. in Optical Sciences specializing in imaging, image processing, and image analysis. 37+ years of military, academic, and (mostly) industrial experience with image analysis programming and algorithm development. Experience designing custom light booths and other imaging systems. Experience with color and monochrome imaging, video analysis, thermal, ultraviolet, hyperspectral, CT, MRI, radiography, profilometry, microscopy, NIR and Raman spectroscopy, etc. on a huge variety of subjects. Be sure to click "View All" in my File Exchange to see ALL of my demos and tutorials:

Professional Interests: Image analysis and processing

44824 reputation
0 questions
25632 answers
8250 accepted answers
Star Strider

Star Strider

Hic sunt dracones!

PROFESSIONAL: Physician (M.D.): Diplomate of the American Board of Internal Medicine; M.Sc. Biomedical Engineering: Instrumentation, Signal Processing, Control, System Identification, Parameter Estimation

NON-PROFESSIONAL: Amateur Extra Class Amateur Radio Operator; Private Pilot, Airplane Single Engine Land, Instrument Rating Airplane; Gamer

NOTE: I do not respond to emails or personal messages, unless they are about my File Exchange contributions.

26044 reputation
0 questions
9792 answers
4869 accepted answers


Computers assist human, not the other way around.
Professional Interests: Motion analysis, physics, orthopedics

Questions about FileExchange submissions are welcome - get my address from the code. I do not answer mails concerning questions in the forum.

22736 reputation
63 questions
10493 answers
3428 accepted answers
Azzi Abdelmalek

Azzi Abdelmalek

University teacher
Speciality: Automatic control
Hobbies: Football, Music and Chess.

Professional Interests: Automatic Control

16694 reputation
6 questions
7134 answers
3166 accepted answers


12274 reputation
0 questions
4054 answers
2107 accepted answers

Stephen Cobeldick

Suspensa Vix Via Fit

11679 reputation
3 questions
3688 answers
2095 accepted answers
Andrei Bobrov
10696 reputation
0 questions
4039 answers
1830 accepted answers
Matt J

Matt J

Professional Interests: medical image processing, optimization algorithms

PLEASE NOTE: I do not read email sent through my author page. Please post questions about FEX submissions in their respective Comments section.

9793 reputation
110 questions
4444 answers
1807 accepted answers
Sean de Wolski

Sean de Wolski

I like to be outside. But if I'm inside, I like to be using MATLAB.

I'm an Application Engineer at MathWorks and civil/structural engineer by education.

9471 reputation
14 questions
4453 answers
1562 accepted answers

Professional Interests: Mathematical Computing

7850 reputation
21 questions
3947 answers
1485 accepted answers
the cyclist

the cyclist

Principal Scientist and Director of Data Science at PatientsLikeMe; Obsessive runner.
Professional Interests: Predictive modeling, statistics.

7837 reputation
36 questions
3109 answers
1326 accepted answers
John D'Errico

John D'Errico

Mainly retired from Eastman Kodak. (Of course, Kodak itself is now semi-retired. I don't think I had any influence in that.) I still write MATLAB code as I find something interesting, and I do attempt to write new tools to put on the File Exchange when I think I can make a contribution.

However, I DON'T answer direct e-mail questions, and I do NOT do homework. In general, your homework is YOUR problem, not mine. Please do NOT e-mail me with your homework problems or student projects. If I was willing to answer your questions, I would very rapidly become overwhelmed, because one question is never just one simple question.

When I'm not doing something with MATLAB, you might find me playing bridge, either in the club or online on BBO.

Professional Interests: MATLAB, numerical analysis, mathematical modeling

Avocational interests: Bridge, woodworking, woodturning

7708 reputation
5 questions
3262 answers
1211 accepted answers


7441 reputation
22 questions
3167 answers
1272 accepted answers
James Tursa

James Tursa

Interested in external applications, mex & engine applications with Fortran, C, C++, etc, particularly in the areas of speed improvement and memory management efficiencies.

7375 reputation
13 questions
2421 answers
1159 accepted answers
Geoff Hayes

Geoff Hayes

Professional Interests: Software Engineering, Target Tracking

6814 reputation
0 questions
2344 answers
1258 accepted answers
Greg Heath

Greg Heath

Backgound in Electromagnetic Theory, Plasma Physics and Radar Target Identification using Neural Networks.
PhD Student, Research Assistant and Lecturer at Stanford;
AB, ScB, ScM Student; Research Assistant, Fellow and Professor at Brown;
27 yrs researching Ballistic and Theatre Missile Defense using Neural Networks at MIT Lincoln Laboratory. Retired 2003.

Professional Interests: Neural Netwoks, Spectral Analysis

5654 reputation
21 questions
2872 answers
1954 accepted answers
Wayne King

Wayne King

I am a developer on the Wavelet Toolbox at MathWorks

DISCLAIMER: Any advice or opinions posted here are my own, and in no way reflect that of MathWorks.
Professional Interests: Signal Processing

5642 reputation
0 questions
2690 answers
1095 accepted answers
5634 reputation
0 questions
2044 answers
793 accepted answers
5383 reputation
14533 questions
14536 answers
14535 accepted answers

Thomas Koelen

Image quality analyst at Océ Technologies
Studied Applied Physics in Enschede

5252 reputation
12 questions
104 answers
29 accepted answers


Matt is currently employed at Sunnyside Risk Assessments, LLC in the beautiful Florida panhandle. Fishing and running are my favorite things to do, besides programming.

Professional Interests: MATLAB, C++

5135 reputation
13 questions
1506 answers
794 accepted answers

Kaustubha Govind

I am a Software Developer on the Simulink Engine team at MathWorks. I have also worked in our Technical Support Department in the past, with a specialization in our code-generation products.

DISCLAIMER: Any advice or opinions posted here are my own, and in no way reflect that of MathWorks.

**IMPORTANT NOTE**: Please be considerate and avoid sending personal messages to contributors on this forum. All users participate voluntarily, and in their spare time. It is forum etiquette to first search for a solution to your problem on the forum to see if it has been answered before. If you do not find a solution, formulate your problem well and post it as a question on the forum. Be patient and allow time for it to be answered. There are some great tips in these discussions:

5064 reputation
0 questions
2202 answers
826 accepted answers
per isakson
4536 reputation
41 questions
1634 answers
762 accepted answers

Fangjun Jiang

What is a model?
Professional Interests: Model-Based Development

4402 reputation
11 questions
1864 answers
761 accepted answers


Professional Interests: Signal Processing, OOP, Matlab GUI programming

3825 reputation
14 questions
1609 answers
717 accepted answers
Chad Greene

Chad Greene

I am interested in the floating ice shelves that fringe East Antarctica. My current work is toward building a better understanding of how climatology influences glaciology via oceanography. I also have some experience with the acoustics of gas hydrates and oceanic methane bubbles.

Professional Interests: Antarctic ice shelf dynamics, sea level rise, underwater acoustics, methane hydrates

Note: I will not do your homework for you and I will not respond to emails directing me to a question posed on the Answers forum.

3776 reputation
80 questions
892 answers
298 accepted answers
Steven Lord

Steven Lord

I joined The MathWorks in the Technical Support department during the summer of 2001 and transferred into the Quality Engineering department in March of 2004. I now work qualifying the core MATLAB numerical functions (PLUS, MINUS, LU, FFT, ODE45, etc.)
Professional Interests: mathematics, MATLAB

For assistance with MATLAB question please post to MATLAB Answers or the MATLAB Newsgroup or contact Technical Support using the Contact Us link in the upper-right corner of the page instead of contacting me directly.

3708 reputation
0 questions
2057 answers
623 accepted answers
3446 reputation
0 questions
1710 answers
681 accepted answers

Oleg Komarov

PhD in Financial Economics at Imperial College London.
Professional Interests: asset management, big data, systematic trading strategies, financial modelling

3323 reputation
37 questions
1022 answers
480 accepted answers
Cedric Wannaz

Cedric Wannaz

General interest: interdisciplinary approaches to complex problems (in particular mixing Mathematics, Physics, and Computer science).

3232 reputation
17 questions
762 answers
453 accepted answers
Mischa Kim

Mischa Kim

Networker, learner, educator
Professional Interests: Spacecraft dynamics and control, numerical analysis, simulation, animation

3070 reputation
2 questions
1054 answers
587 accepted answers
3034 reputation
0 questions
1456 answers
577 accepted answers
Daniel Shub
2988 reputation
62 questions
1272 answers
399 accepted answers
Alan Weiss

Alan Weiss

I write documentation for MATLAB mathematical toolboxes, primarily optimization. I have also written documentation for PDE, statistics, symbolic math, and econometrics.

My pre-MathWorks job was with Bell Labs, primarily in mathematical models of data traffic, with a strong interest in parallel computation and in rare events (large deviations).

2928 reputation
0 questions
1452 answers
557 accepted answers


Someone who is interested in Mathematics, Control and Engineering. Also, music as a hobby.

2818 reputation
7 questions
756 answers
583 accepted answers
Jos (10584)

Jos (10584)

Professional Interests: neuroscience, physics, mathematics

2645 reputation
6 questions
1168 answers
372 accepted answers
Paulo Silva

Paulo Silva

Just done my Masters degree in Control and Industrial Electronics, I also have one licenciates degree in Electrical Engineering and Computer Science.

I love to use MATLAB and to help others using it, everyday I learn something new.

Currently teaching and supporting students with several projects that use MATLAB for Biomedical Imaging.

Please don't send me emails asking for code or help, I will only help the best I can here at MATLAB Answers.
Professional Interests: Control engineering, biking, growing organic food, permaculture student (nature is my teacher)

2468 reputation
14 questions
952 answers
366 accepted answers
Honglei Chen
2354 reputation
0 questions
1082 answers
439 accepted answers

Titus Edelhofer

MATLAB user since 1992 and working for MathWorks since 2001.
Consulting Manager in Germany.

2298 reputation
0 questions
934 answers
408 accepted answers


Professional Interests: Modeling. As in hydrology, not as in Brad Pitt.

2108 reputation
0 questions
847 answers
377 accepted answers


Please do not write me a PM. Post questions or follow up question on MATLAB Answers. I will not answer a PM.

1989 reputation
1 question
634 answers
392 accepted answers
Andrew Newell

Andrew Newell

A geophysicist who uses MATLAB for most of his modeling.
Professional Interests: geophysics

1979 reputation
15 questions
758 answers
297 accepted answers
Edric Ellis

Edric Ellis

Developer at MathWorks, working on Parallel Computing Toolbox. Professional Interests: parallel computing, distributed arrays, gpu

1918 reputation
0 questions
586 answers
291 accepted answers

Sebastian Castro

Education Technical Evangelist at MathWorks, focusing on robotics student competitions. Formerly a Training Content Developer for modeling and simulation.

Professional Interests: Education, Robotics, Simulation, Controls, Algorithms, Physical Modeling, Model-Based Design, Computer Vision, Machine Learning, Software Engineering

1915 reputation
1 question
804 answers
367 accepted answers
Matt Tearle

Matt Tearle

I love MATLAB. I love teaching people to love MATLAB.

I love it so much that I went to work for the people who make MATLAB. I spend my days at MathWorks creating material to help people learn MATLAB. Life is good.

(My love of teaching MATLAB notwithstanding, please don't email me for help -- post a question to MATLAB Answers instead. Firstly, your email will probably be swallowed by my spam filter. Secondly, private consulting isn't in my job description.)

1779 reputation
1 question
619 answers
238 accepted answers
David Young

David Young

Professional Interests: Image Processing

1740 reputation
5 questions
643 answers
270 accepted answers
Kelly Kearney

Kelly Kearney

Professional Interests: ocean biogeochemistry, ecosystem modeling

1702 reputation
12 questions
524 answers
260 accepted answers
Andreas Goser

Andreas Goser

MATLAB user since 1995
MathWorker since 2000
Technical Support Manager
Professional Interests: image processing

1597 reputation
7 questions
968 answers
240 accepted answers

Massimo Zanetti

I have received the M.S. degree in Mathematics from the University of Ferrara, Italy and the Ph.D. in Information and Communication Technologies at the University of Trento, Italy. My research interests include variational methods to segmentation, numerical optimization, remote sensing image processing, change detection in remote sensing images.

1536 reputation
0 questions
261 answers
123 accepted answers

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