MATLAB Answers

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Walter Roberson

Walter Roberson

My health is distracting me from answering email questions, so be aware that I might not answer.

Include a link to your Answers posting or I probably will not respond.

55325 reputation
29 questions
30146 answers
10650 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

37350 reputation
0 questions
22094 answers
6977 accepted answers
Star Strider

Star Strider

Hic sunt dracones!

19108 reputation
0 questions
7350 answers
3552 accepted answers
Azzi Abdelmalek

Azzi Abdelmalek

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

Professional Interests: Automatic Control

15929 reputation
6 questions
7119 answers
3152 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

15400 reputation
58 questions
7554 answers
2304 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

8895 reputation
14 questions
4337 answers
1516 accepted answers
Andrei Bobrov
8624 reputation
0 questions
3333 answers
1524 accepted answers


8428 reputation
0 questions
2862 answers
1470 accepted answers
Matt J

Matt J

Professional Interests: medical image processing, optimization algorithms

8001 reputation
95 questions
3771 answers
1491 accepted answers
Stephen Cobeldick

Stephen Cobeldick

Suspensa Vix Via Fit

7185 reputation
3 questions
2483 answers
1335 accepted answers
the cyclist

the cyclist

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

6535 reputation
34 questions
2776 answers
1155 accepted answers
Geoff Hayes

Geoff Hayes

Professional Interests: Software Engineering, Target Tracking

6000 reputation
0 questions
2118 answers
1140 accepted answers


5946 reputation
18 questions
2567 answers
1015 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.

5552 reputation
10 questions
1780 answers
844 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

5402 reputation
0 questions
2676 answers
1085 accepted answers
Thomas Koelen

Thomas Koelen

Image quality analyst at Océ Technologies
Studied Applied Physics in Enschede

5212 reputation
12 questions
104 answers
27 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++

4982 reputation
13 questions
1506 answers
795 accepted answers
Roger Stafford
4960 reputation
0 questions
1752 answers
692 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

4948 reputation
4 questions
2202 answers
781 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

4926 reputation
14 questions
2502 answers
1781 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:

4862 reputation
0 questions
2204 answers
825 accepted answers
per isakson
3994 reputation
38 questions
1498 answers
679 accepted answers
Fangjun Jiang

Fangjun Jiang

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

3989 reputation
11 questions
1723 answers
702 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.

3449 reputation
78 questions
767 answers
248 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

3208 reputation
36 questions
1022 answers
481 accepted answers
3184 reputation
13538 questions
13538 answers
13537 accepted answers

Professional Interests: Mathematical Computing

3138 reputation
23 questions
1800 answers
620 accepted answers


Professional Interests: Signal Processing, OOP, Matlab GUI programming

2898 reputation
12 questions
1271 answers
560 accepted answers
Daniel Shub
2857 reputation
62 questions
1272 answers
398 accepted answers


2850 reputation
0 questions
1397 answers
556 accepted answers
Mischa Kim

Mischa Kim

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

2806 reputation
2 questions
1016 answers
563 accepted answers
Cedric Wannaz

Cedric Wannaz

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

2569 reputation
13 questions
611 answers
366 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)

2366 reputation
14 questions
952 answers
364 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).

2250 reputation
0 questions
1165 answers
431 accepted answers
Titus Edelhofer

Titus Edelhofer

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

2204 reputation
0 questions
925 answers
404 accepted answers


2190 reputation
0 questions
1138 answers
447 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.

2164 reputation
0 questions
1211 answers
368 accepted answers
Jos (10584)

Jos (10584)

Professional Interests: neuroscience, physics, mathematics

1944 reputation
4 questions
880 answers
271 accepted answers
Honglei Chen
1922 reputation
0 questions
938 answers
363 accepted answers


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

1885 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

1838 reputation
15 questions
717 answers
273 accepted answers


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

1806 reputation
0 questions
731 answers
332 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.)

1725 reputation
1 question
617 answers
238 accepted answers
David Young

David Young

Professional Interests: Image Processing

1682 reputation
5 questions
643 answers
270 accepted answers
Edric Ellis

Edric Ellis

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

1626 reputation
0 questions
505 answers
248 accepted answers
Andreas Goser

Andreas Goser

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

1531 reputation
7 questions
907 answers
233 accepted answers
Massimo Zanetti

Massimo Zanetti

I have received a Master's degree in Mathematics from the University of Ferrara, Italy. I am currently a Ph.D. student in Information and Communication Technologies (ICT) at the University of Trento. My research interests include variational methods to segmentation, numerical optimization, remote sensing image processing, change detection in remote sensing images.

1478 reputation
0 questions
244 answers
112 accepted answers
Kelly Kearney

Kelly Kearney

Professional Interests: ocean biogeochemistry, ecosystem modeling

1476 reputation
12 questions
494 answers
241 accepted answers
Sebastian Castro

Sebastian Castro

Former training content developer at MathWorks, specializing in modeling and simulation with Simulink.

Professional Interests: Controls, Algorithms, Robotics, Physical Modeling, Model-Based Design, Education

1444 reputation
0 questions
652 answers
290 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

1442 reputation
4 questions
535 answers
224 accepted answers

1 - 50 of 195,093