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.

50379 reputation
27 questions
27835 answers
9734 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

34896 reputation
0 questions
20777 answers
6547 accepted answers
Star Strider

Star Strider

Hic sunt dracones!

17090 reputation
0 questions
6560 answers
3179 accepted answers
Azzi Abdelmalek

Azzi Abdelmalek

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

Professional Interests: Automatic Control

15763 reputation
6 questions
7115 answers
3148 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

13986 reputation
57 questions
6918 answers
2093 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

8767 reputation
14 questions
4299 answers
1506 accepted answers
Andrei Bobrov
8382 reputation
0 questions
3239 answers
1492 accepted answers
Matt J

Matt J

Professional Interests: medical image processing, optimization algorithms

7679 reputation
93 questions
3667 answers
1441 accepted answers


7184 reputation
0 questions
2452 answers
1258 accepted answers
Stephen Cobeldick

Stephen Cobeldick

Suspensa Vix Via Fit

6082 reputation
3 questions
2191 answers
1155 accepted answers
the cyclist

the cyclist

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

5977 reputation
32 questions
2604 answers
1077 accepted answers
Geoff Hayes

Geoff Hayes

Professional Interests: Software Engineering, Target Tracking

5656 reputation
0 questions
2011 answers
1079 accepted answers


5444 reputation
17 questions
2376 answers
923 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

5362 reputation
0 questions
2674 answers
1085 accepted answers
Thomas Koelen

Thomas Koelen

Image quality analyst at Océ Technologies
Studied Applied Physics in Enschede

5202 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

4932 reputation
13 questions
1506 answers
794 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.

4925 reputation
10 questions
1571 answers
732 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:

4818 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

4750 reputation
13 questions
2418 answers
1738 accepted answers
Roger Stafford
4650 reputation
0 questions
1620 answers
643 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

4340 reputation
4 questions
1889 answers
687 accepted answers
Fangjun Jiang

Fangjun Jiang

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

3949 reputation
11 questions
1715 answers
698 accepted answers
per isakson
3901 reputation
33 questions
1476 answers
669 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.

3354 reputation
78 questions
738 answers
232 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

3168 reputation
36 questions
1020 answers
481 accepted answers
Daniel Shub
2836 reputation
62 questions
1272 answers
398 accepted answers


2764 reputation
0 questions
1358 answers
542 accepted answers
2647 reputation
13654 questions
13654 answers
13653 accepted answers
Mischa Kim

Mischa Kim

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

2646 reputation
2 questions
975 answers
541 accepted answers
Cedric Wannaz

Cedric Wannaz

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

2547 reputation
12 questions
611 answers
365 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)

2344 reputation
14 questions
952 answers
365 accepted answers


Professional Interests: Signal Processing, OOP, Matlab GUI programming

2305 reputation
10 questions
1025 answers
449 accepted answers
Titus Edelhofer

Titus Edelhofer

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

2194 reputation
0 questions
925 answers
403 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).

2092 reputation
0 questions
1088 answers
402 accepted answers
Jos (10584)

Jos (10584)

Professional Interests: neuroscience, physics, mathematics

1880 reputation
4 questions
858 answers
261 accepted answers


1856 reputation
0 questions
980 answers
386 accepted answers


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

1837 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

1832 reputation
15 questions
717 answers
273 accepted answers
Honglei Chen
1714 reputation
0 questions
880 answers
330 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.)

1699 reputation
1 question
616 answers
237 accepted answers
David Young

David Young

Professional Interests: Image Processing

1672 reputation
5 questions
643 answers
270 accepted answers


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

1664 reputation
0 questions
669 answers
309 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

1598 reputation
0 questions
942 answers
271 accepted answers
Edric Ellis

Edric Ellis

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

1540 reputation
0 questions
478 answers
235 accepted answers
Andreas Goser

Andreas Goser

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

1498 reputation
6 questions
881 answers
228 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
Kelly Kearney

Kelly Kearney

Professional Interests: ocean biogeochemistry, ecosystem modeling

1428 reputation
12 questions
480 answers
238 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

1406 reputation
0 questions
652 answers
287 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.

1388 reputation
0 questions
199 answers
96 accepted answers
Shashank Prasanna

Shashank Prasanna

Product Marketing, MathWorks
Statistics and Machine Learning Applications

1380 reputation
0 questions
677 answers
269 accepted answers

1 - 50 of 184,539