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.

52500 reputation
29 questions
28837 answers
10141 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

35786 reputation
0 questions
21299 answers
6712 accepted answers
Star Strider

Star Strider

Hic sunt dracones!

17740 reputation
0 questions
6828 answers
3307 accepted answers
Azzi Abdelmalek

Azzi Abdelmalek

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

Professional Interests: Automatic Control

15819 reputation
6 questions
7118 answers
3150 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

14470 reputation
57 questions
7153 answers
2175 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

8797 reputation
14 questions
4306 answers
1509 accepted answers
Andrei Bobrov
8466 reputation
0 questions
3283 answers
1505 accepted answers
Matt J

Matt J

Professional Interests: medical image processing, optimization algorithms

7799 reputation
94 questions
3703 answers
1458 accepted answers


7618 reputation
0 questions
2608 answers
1338 accepted answers
Stephen Cobeldick

Stephen Cobeldick

Suspensa Vix Via Fit

6138 reputation
3 questions
2208 answers
1163 accepted answers
the cyclist

the cyclist

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

6071 reputation
33 questions
2632 answers
1091 accepted answers
Geoff Hayes

Geoff Hayes

Professional Interests: Software Engineering, Target Tracking

5770 reputation
0 questions
2048 answers
1100 accepted answers


5726 reputation
17 questions
2475 answers
973 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

5380 reputation
0 questions
2675 answers
1085 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.

5304 reputation
10 questions
1703 answers
804 accepted answers
Thomas Koelen

Thomas Koelen

Image quality analyst at Océ Technologies
Studied Applied Physics in Enschede

5208 reputation
12 questions
104 answers
27 accepted answers
Matt Fig

Matt Fig

Matt is currently employed at Sunnyside Risk Assessments, LLC in the beautiful Florida panhandle.

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

4946 reputation
13 questions
1506 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:

4832 reputation
0 questions
2204 answers
825 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

4824 reputation
13 questions
2460 answers
1757 accepted answers
Roger Stafford
4762 reputation
0 questions
1672 answers
661 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

4504 reputation
4 questions
1986 answers
716 accepted answers
Fangjun Jiang

Fangjun Jiang

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

3967 reputation
11 questions
1719 answers
699 accepted answers
per isakson
3937 reputation
36 questions
1483 answers
671 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.

3372 reputation
78 questions
742 answers
235 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

3186 reputation
36 questions
1022 answers
481 accepted answers
Daniel Shub
2842 reputation
62 questions
1272 answers
398 accepted answers


2836 reputation
0 questions
1397 answers
554 accepted answers
2807 reputation
13515 questions
13515 answers
13514 accepted answers
Mischa Kim

Mischa Kim

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

2718 reputation
2 questions
998 answers
550 accepted answers
Cedric Wannaz

Cedric Wannaz

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

2558 reputation
13 questions
611 answers
366 accepted answers


Professional Interests: Signal Processing, OOP, Matlab GUI programming

2502 reputation
12 questions
1108 answers
485 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)

2356 reputation
14 questions
952 answers
365 accepted answers

Professional Interests: Mathematical Computing

2309 reputation
23 questions
1413 answers
466 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
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).

2162 reputation
0 questions
1119 answers
414 accepted answers


2010 reputation
0 questions
1052 answers
413 accepted answers
Jos (10584)

Jos (10584)

Professional Interests: neuroscience, physics, mathematics

1900 reputation
4 questions
866 answers
264 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.

1882 reputation
0 questions
1069 answers
323 accepted answers


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

1839 reputation
1 question
630 answers
389 accepted answers
Andrew Newell

Andrew Newell

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

1834 reputation
15 questions
717 answers
273 accepted answers
Honglei Chen
1776 reputation
0 questions
895 answers
341 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.)

1709 reputation
1 question
617 answers
237 accepted answers
David Young

David Young

Professional Interests: Image Processing

1676 reputation
5 questions
643 answers
270 accepted answers


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

1666 reputation
0 questions
669 answers
309 accepted answers
Edric Ellis

Edric Ellis

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

1560 reputation
0 questions
486 answers
238 accepted answers
Andreas Goser

Andreas Goser

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

1522 reputation
6 questions
893 answers
233 accepted answers
Kelly Kearney

Kelly Kearney

Professional Interests: ocean biogeochemistry, ecosystem modeling

1443 reputation
12 questions
485 answers
239 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.

1440 reputation
0 questions
222 answers
105 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

1430 reputation
4 questions
535 answers
223 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

1422 reputation
0 questions
652 answers
288 accepted answers

1 - 50 of 188,651