MATLAB Answers

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Walter Roberson

Walter Roberson

If you send me a message by the "Contact" link, please be specific about which Question is yours; I am only given your email address, not your Mathworks userid.

33638 reputation
23 questions
18013 answers
6358 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. 33+ 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, thermal, ultraviolet, CT, MRI, radiography, profilometry, microscopy, 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

26124 reputation
0 questions
15978 answers
5186 accepted answers
Azzi Abdelmalek

Azzi Abdelmalek

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

Professional Interests: Automatic Control

12672 reputation
6 questions
5716 answers
2581 accepted answers
Jan Simon

Jan Simon

Computers assist human, not the other way around.

Questions about FileExchange submissions are welcome. Get my address from the code.
Professional Interests: Motion analysis, physics, orthopedics

11954 reputation
51 questions
5993 answers
1859 accepted answers
Star Strider

Star Strider

Hic sunt dracones!

9396 reputation
0 questions
3717 answers
1797 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.

Some Interests:
-Image Processing, specifically 3d images (CT, mri)
-All things graphics
-Optimization: both of code and objective functions
-Finite Element Analysis

The two things I want to improve on most are regular expressions and OOP.
Professional Interests: MATLAB

8239 reputation
14 questions
4086 answers
1430 accepted answers
Matt J

Matt J

Professional Interests: medical image processing, optimization algorithms

6821 reputation
77 questions
3106 answers
1300 accepted answers
Andrei Bobrov
6788 reputation
0 questions
2675 answers
1246 accepted answers
Wayne King

Wayne King

I work on signal processing documentation at MathWorks.

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

5166 reputation
0 questions
2285 answers
1068 accepted answers
Matt Fig

Matt Fig

Matt is currently pursuing a PhD in Mechanical Engineering at the Colorado School of Mines.

Professional Interests: MATLAB, ANSYS, C++, Combustion

4826 reputation
13 questions
1478 answers
794 accepted answers
Kaustubha Govind

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:

4690 reputation
0 questions
2199 answers
822 accepted answers
the cyclist

the cyclist

Researcher and Director of Data Science at; MATLAB evangelist.
Professional Interests: Predictive modeling, statistics

4632 reputation
31 questions
2013 answers
847 accepted answers


3946 reputation
0 questions
1296 answers
685 accepted answers
Geoff Hayes

Geoff Hayes

Professional Interests: Software Engineering, Target Tracking

3918 reputation
0 questions
1342 answers
746 accepted answers


3864 reputation
16 questions
1492 answers
613 accepted answers
Roger Stafford
3790 reputation
0 questions
1230 answers
493 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

3688 reputation
10 questions
1583 answers
1271 accepted answers
Fangjun Jiang

Fangjun Jiang

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

3669 reputation
11 questions
1581 answers
653 accepted answers
per isakson
3439 reputation
30 questions
1316 answers
586 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.

3421 reputation
10 questions
1056 answers
484 accepted answers
Oleg Komarov

Oleg Komarov

PhD student in Finance at IC Business School
Professional Interests: asset management, big data, systematic trading strategies, financial modelling

3082 reputation
33 questions
1004 answers
479 accepted answers


2740 reputation
61 questions
1203 answers
398 accepted answers
Mischa Kim

Mischa Kim

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

2432 reputation
2 questions
912 answers
516 accepted answers
Stephen Cobeldick

Stephen Cobeldick

Suspensa Vix Via Fit

2408 reputation
1 question
911 answers
469 accepted answers
Cedric Wannaz

Cedric Wannaz

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

2389 reputation
11 questions
588 answers
348 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)

2281 reputation
14 questions
923 answers
365 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 your questions, and I do NOT do homework. 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

2257 reputation
4 questions
959 answers
334 accepted answers
Titus Edelhofer

Titus Edelhofer

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

1998 reputation
0 questions
802 answers
371 accepted answers
Andrew Newell

Andrew Newell

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

1822 reputation
15 questions
640 answers
273 accepted answers


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

1751 reputation
1 question
602 answers
385 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.)

1590 reputation
0 questions
571 answers
236 accepted answers
David Young

David Young

Professional Interests: Image Processing

1552 reputation
5 questions
600 answers
255 accepted answers
Honglei Chen
1522 reputation
0 questions
773 answers
295 accepted answers
Alan Weiss

Alan Weiss

I write documentation for MATLAB mathematical toolboxes, primarily optimization and PDE. I have also written documentation for 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).

1512 reputation
0 questions
752 answers
289 accepted answers


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

1452 reputation
0 questions
572 answers
278 accepted answers


Love MATLAB :)
Work with Wireless Sensor Networks, Medical Image processing (MRI,fMRi,DTI), High Performance Computing at UAB
Professional Interests: Parallel Computing, Supercomputing, Wireless sensor networks

1394 reputation
4 questions
531 answers
223 accepted answers
Shashank Prasanna

Shashank Prasanna

Product Marketing, MathWorks
Statistics and Machine Learning Applications

1320 reputation
0 questions
674 answers
267 accepted answers
Andreas Goser

Andreas Goser

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

1306 reputation
6 questions
737 answers
196 accepted answers
Edric Ellis

Edric Ellis

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

1300 reputation
0 questions
394 answers
197 accepted answers


I started using Matlab from 2011.
I am using Matlab/Simulink in embedded system domain to design automotive control systems.
Professional Interests: Automotive, Embedded systems, Matlab, Simulink & Stateflow, RTW & Embedded-Coder

1291 reputation
9 questions
363 answers
215 accepted answers


Professional Interests: Signal Processing, OOP, Matlab GUI programming

1263 reputation
8 questions
569 answers
246 accepted answers
1216 reputation
13274 questions
13274 answers
13274 accepted answers
Teja Muppirala
1150 reputation
0 questions
355 answers
175 accepted answers
Jos (10584)

Jos (10584)

Professional Interests: neuroscience, physics, mathematics

1116 reputation
3 questions
586 answers
184 accepted answers
David Sanchez

David Sanchez

Physicist, working as control engineer for a wind turbine manufacturer.
Professional Interests: control,optimization, computer vision, robotics, renewable energies.

1096 reputation
0 questions
688 answers
227 accepted answers
Kelly Kearney

Kelly Kearney

Professional Interests: ocean biogeochemistry, ecosystem modeling

1074 reputation
11 questions
372 answers
180 accepted answers


1070 reputation
0 questions
521 answers
217 accepted answers
Arnaud Miege

Arnaud Miege

Previously working at The MathWorks in the UK as an application engineer for nearly 6 years, I focussed on Simulink applications in general, and physical modelling in particular. I also used to work in the area of rapid prototyping and hardware-in-the-loop simulations with xPC Target. I have been using MATLAB and Simulink for the past 12 years.

My personal web page is at
Professional Interests: Modelling physical systems, control system design, automotive engineering, vehicle dynamics, mechanical engineering

1024 reputation
0 questions
316 answers
168 accepted answers
Rick Rosson

Rick Rosson

Senior Applications Engineer at MathWorks specializing in Signal Processing and Communication Systems. Professional interests include: Digital Signal Processing, Digital Communication Systems, Image and Video Processing, Audio Processing, Top-Down Design, Embedded C Code Generation and Verification, Adaptive Filtering Algorithms, Control Systems, Statistical Signal Processing, Discrete Event Simulation.

DISCLAIMER: All comments and opinions expressed by me on MATLAB Central (including MATLAB Answers) are mine alone and do not necessarily reflect those of my employers, past or present.

973 reputation
1 question
442 answers
172 accepted answers
Joseph Cheng
961 reputation
2 questions
466 answers
186 accepted answers

1 - 50 of 145,337