File Exchange

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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

1468 downloads (30 days)
57 submissions
31 Jan 2019 last submission

1332 ratings

Antonio Trujillo-Ortiz

Professor Antonio Trujillo-Ortiz is an oceanographer. He has a PhD and has worked extensively at Facultad de Ciencias Marinas as a senior lecturer on courses of Statistics, Advanced Statistics, Multivariate Statistics, and Linear Algebra. It would appreciate to receive copies of the work published that utilize or they cite any of the functions below. FEX contributor since
(Please, rate my files.)

Much of the m-functions presented here can be found cited at:

You can find more updated information on:
and enter Trujillo-Ortiz, A. and R. Hernandez-Walls

Professional Interests: Oceanography, Statistics, Mathematics, Marilyn Monroe, Titanic. Offering also courses and statistical consulting services anywhere of the world.

196 downloads (30 days)
189 submissions
02 Jan 2016 last submission

248 ratings

41 downloads (30 days)
18 submissions
13 Mar 2019 last submission

14 ratings

Edward Belcher

Principal Engineer (Retired) Applied Physics Laboratory, University of Washington 1976-2003
Co-Founder and President (Retired) Sound Metrics Corp. 2003-2009
At the University, I Developed instrumentation (communication and imaging) using sound in underwater environments as well as taught classes in Electrical Engineering and in Speech and Hearing Sciences.

Sound Metrics manufactures and sells very high resolution imaging sonars used for underwater inspection for military and commercial ventures as well as studying underwater habitat and its inhabitants in clear and turbid water.

At the University and Sound Metrics I used MATLAB for simulation, development, and testing of our instrumentation. In retirement I use MATLAB for data analysis and demonstrations in schools.

15 downloads (30 days)
4 submissions
12 Jul 2017 last submission

2 ratings

John Keevil

Formerly employed as an engineer designing microwave antennas and power combiners etc. Currently interested in the mathematics of Orbital Mechanics.

10 downloads (30 days)
1 submissions
08 Sep 2016 last submission

1 rating

Derek O'Connor

Professional Interests: Algorithms and Data Structures, Numerical Analysis

8 downloads (30 days)
2 submissions
18 Sep 2012 last submission

5 ratings

6 downloads (30 days)
1 submissions
13 Oct 2004 last submission

2 ratings

Thomas Wilson

I am a retired nuclear engineer. I worked for Oak Ridge National Laboratory for most of my career in the area of control and safety systems. My current interests are in solving interesting mathematical and engineering problems for the fun of it.

2 downloads (30 days)
2 submissions
29 Nov 2016 last submission

0 ratings

Roger Schvaneveldt

Roger Schvaneveldt is an American experimental psychologist with a focus on basic and applied research in cognitive psychology. He earned a PhD from the University of Wisconsin, Madison in 1967 and has been on the faculties of Stony Brook University (1967-77), New Mexico State University, (1977-2000), and Arizona State University (2000-10).
In 1971 Schvaneveldt co-wrote with David E. Meyer the seminal article on semantic priming. He developed Pathfinder Network Scaling with Francis T. (Frank) Durso and others, editing a widely cited book on it in 1990 and has also published on expertise, implicit learning, aviation psychology, and on discovery in biomedical informatics with Trevor Cohen and others.
Schvaneveldt is a fellow of the American Association for the Advancement of Science, the American Psychological Association, the Psychonomic Society, and the Association for Psychological Science.

1 downloads (30 days)
1 submissions
07 Oct 2016 last submission

0 ratings

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